GA Perforated Sheet

ALUMINIUM

Perforated Sheet Patterns

Maggies Centre, London. Design: Rogers Stirk Harbour & Partners

CONTENTS

05

Maggies Centre, London. Design: Rogers Stirk Harbour & Partners

About this catalogue

07

26

Round holes

Slotted holes

17

30

Square holes

GA Super Samples Service

21

35

Square holes diagonal

Special hole patterns

23

37

Hexagonal holes

Understanding perforated processes 3

Valhall Offshore Accommodation Platform

A B O U T T H I S C ATA LO G U E This perforated aluminium sheet catalogue details the standard sheet sizes and patterns that we produce and stock.

There are also some inspirational images of projects where we have supplied our fabricated perforated products.

S P E C I A L LY P E R F O R A T E D P A N E L S Our 5-Star Perforating Service accurately and rapidly produces perforated panels to meet your project specific requirements.

The following design elements can be included as part of a bespoke package.

• Made to order panel sizes • Plain border margins or areas • Cut outs to allow for M & E fixtures • Return folds to panel edges

Same day dispatch Sample Service.

• Fixing holes in unperforated areas • Folded edges to fit around design features • Curved/rolled panels • Pattern matching of holes to provide aesthetic continuity

Valhall Offshore Accommodation Platform

• Apply powder coated finishes

Bespoke perforated panel sizes

020 8692 2255 w w w. g o o d i n g a l u m . c o m 5

Worth School, Crawley, W. Sussex. Design: A W Spaces Ltd

Ø

Ø

3mm

Open area kg/m2

Ø

3mm

Holes

Product Ref. Sheet size

Detroit Auto Show, USA. Design: Imagination

Detroit Auto Show, USA. Design: Imagination

ROUND HOLES

3mm

Holes

Product Ref. Sheet size

Open area kg/m2

GA P1601 2000 x 1000 x 1.2mm 23% 2.5

GA P1651 2000 x 1000 x 1.2mm 40% 1.9

GA P1632 2000 x 1000 x 2.0mm 23% 4.2

GA P1602 2500 x 1250 x 1.2mm 40% 1.9

Holes

Product Ref. Sheet size

Open area kg/m2

GA P1605 2000 x 1000 x 1.2mm 50% 1.6

GA P1603 2000 x 1000 x 2.0mm 40% 3.2 GA P1604 2500 x 1250 x 2.0mm 40% 3.2

7

Worth School, Crawley, W. Sussex. Design: A W Spaces Ltd

Ø

Ø

3mm

Open area kg/m2

Ø

3mm

Holes

Product Ref. Sheet size

Detroit Auto Show, USA. Design: Imagination

Detroit Auto Show, USA. Design: Imagination

ROUND HOLES

3mm

Holes

Product Ref. Sheet size

Open area kg/m2

GA P1601 2000 x 1000 x 1.2mm 23% 2.5

GA P1651 2000 x 1000 x 1.2mm 40% 1.9

GA P1632 2000 x 1000 x 2.0mm 23% 4.2

GA P1602 2500 x 1250 x 1.2mm 40% 1.9

Holes

Product Ref. Sheet size

Open area kg/m2

GA P1605 2000 x 1000 x 1.2mm 50% 1.6

GA P1603 2000 x 1000 x 2.0mm 40% 3.2 GA P1604 2500 x 1250 x 2.0mm 40% 3.2

7

Ø 4.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 4.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 4.7mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1694 2000 x 1000 x 1.2mm 21% 2.6

GA P1652 2000 x 1000 x 1.2mm 40% 1.9

GA P1608 2000 x 1000 x 1.2mm 49% 1.7

GA P1695 2000 x 1000 x 2.0mm 21% 4.3

GA P1670 2500 x 1250 x 1.2mm 40% 1.9

GA P1609 2000 x 1000 x 2.0mm 49% 2.8

GA P1620 2500 x 1250 x 2.0mm 21% 4.3

GA P1606 2000 x 1000 x 2.0mm 40% 3.2 GA P1607 2500 x 1250 x 2.0mm 40% 3.2

Ø 6.3mm Holes

Douai Abbey. Design: David Richmond Associates

Product Ref. Sheet size

Open area kg/m2

Ø 6.3mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 6.3mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1696 2000 x 1000 x 1.2mm 29% 2.3

GA P1653 2000 x 1000 x 1.2mm 40% 1.9

GA P1698 2000 x 1000 x 1.2mm 49% 1.7

GA P1697 2000 x 1000 x 2.0mm 29% 3.8

GA P1671 2500 x 1250 x 1.2mm 40% 1.9

GA P1699 2000 x 1000 x 2.0mm 49% 2.8

GA P1621 2500 x 1250 x 2.0mm 29% 5.8

GA P1683 2000 x 1000 x 2.0mm 40% 3.2 GA P1681 2500 x 1250 x 2.0mm 40% 3.2 GA P1640 2000 x 1000 x 3.0mm 40% 4.9 GA P1641 2500 x 1250 x 3.0mm 40% 4.9

9

Ø 4.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 4.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 4.7mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1694 2000 x 1000 x 1.2mm 21% 2.6

GA P1652 2000 x 1000 x 1.2mm 40% 1.9

GA P1608 2000 x 1000 x 1.2mm 49% 1.7

GA P1695 2000 x 1000 x 2.0mm 21% 4.3

GA P1670 2500 x 1250 x 1.2mm 40% 1.9

GA P1609 2000 x 1000 x 2.0mm 49% 2.8

GA P1620 2500 x 1250 x 2.0mm 21% 4.3

GA P1606 2000 x 1000 x 2.0mm 40% 3.2 GA P1607 2500 x 1250 x 2.0mm 40% 3.2

Ø 6.3mm Holes

Douai Abbey. Design: David Richmond Associates

Product Ref. Sheet size

Open area kg/m2

Ø 6.3mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 6.3mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1696 2000 x 1000 x 1.2mm 29% 2.3

GA P1653 2000 x 1000 x 1.2mm 40% 1.9

GA P1698 2000 x 1000 x 1.2mm 49% 1.7

GA P1697 2000 x 1000 x 2.0mm 29% 3.8

GA P1671 2500 x 1250 x 1.2mm 40% 1.9

GA P1699 2000 x 1000 x 2.0mm 49% 2.8

GA P1621 2500 x 1250 x 2.0mm 29% 5.8

GA P1683 2000 x 1000 x 2.0mm 40% 3.2 GA P1681 2500 x 1250 x 2.0mm 40% 3.2 GA P1640 2000 x 1000 x 3.0mm 40% 4.9 GA P1641 2500 x 1250 x 3.0mm 40% 4.9

9

Ø 9.5mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 12mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 15mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 40mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1654 2000 x 1000 x 1.2mm 35% 2.1

GA P1656 2000 x 1000 x 1.2mm 40% 1.9

GA P1689 2000 x 1000 x 1.2mm 40% 1.9

GA P1798 2000 x 1000 x 2.0mm 40% 3.24

GA P1625 2500 x 1250 x 1.2mm 35% 2.1

GA P1687 2500 x 1250 x 1.2mm 40% 1.9

GA P1690 2000 x 1000 x 2.0mm 40% 3.2

GA P1800 2500 x 1250 x 2.0mm 40% 3.24

GA P1684 2000 x 1000 x 2.0mm 35% 3.5

GA P1686 2000 x 1000 x 2.0mm 40% 3.2

GA P1691 2500 x 1250 x 2.0mm 40% 3.2

GA P1685 2500 x 1250 x 2.0mm 35% 3.5

GA P1688 2500 x 1250 x 2.0mm 40% 3.2

GA P1676 2000 x 1000 x 3.0mm 40% 4.9

GA P1642 2000 x 1000 x 3.0mm 35% 5.3

GA P1674 2000 x 1000 x 3.0mm 40% 4.9

GA P1677 2500 x 1250 x 3.0mm 40% 4.9

GA P1643 2500 x 1250 x 3.0mm 35% 5.3

GA P1675 2500 x 1250 x 3.0mm 40% 4.9

Ø 19mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 22.2mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 31.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 1.3mm Holes

Product Ref. Sheet size

GA PSP613 2000 x 1000 x 1.2mm 8% 3.0

Ø 3mm Holes

Product Ref. Sheet size

Open area kg/m2

Open area kg/m2

Ø 1.6mm Holes

Product Ref. Sheet size

GA PSP616 2000 x 1000 x 1.2mm 8% 3.0

Ø 6.3mm Holes

Product Ref. Sheet size

Open area kg/m2

Open area kg/m2

Ø 12mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1623 2000 x 1000 x 2.0mm 40% 3.2

GA P1624 2000 x 1000 x 2.0mm 44% 3.0

GA P1629 2000 x 1000 x 2.0mm 44% 3.0

GA PSP631 2000 x 1000 x 1.2mm 12% 2.9

GA PSP641 2000 x 1000 x 1.2mm 15% 2.8

GA PSP650 2000 x 1000 x 2.0mm 23% 4.2

GA P1692 2500 x 1250 x 2.0mm 40% 3.2

GA P1672 2500 x 1250 x 2.0mm 44% 3.0

GA P1626 2500 x 1250 x 2.0mm 44% 3.0

GA PSP632 2000 x 1000 x 2.0mm 12% 4.7

GA PSP642 2000 x 1000 x 2.0mm 15% 4.6

GA PSP651 2500 x 1250 x 2.0mm 23% 4.2

GA P1678 2000 x 1000 x 3.0mm 40% 4.9

GA P1628 2000 x 1000 x 3.0mm 44% 4.5

GA P1630 2000 x 1000 x 3.0mm 44% 4.5

GA PSP644 2000 x 1000 x 3.0mm 15% 6.9

GA PSP652 2000 x 1000 x 3.0mm 23% 6.2

GA P1679 2500 x 1250 x 3.0mm 40% 4.9

GA P1673 2500 x 1250 x 3.0mm 44% 4.5

GA P1636 2500 x 1250 x 3.0mm 44% 4.5

GA PSP645 2500 x 1250 x 3.0mm 15% 6.9

GA PSP653 2500 x 1250 x 3.0mm 23% 6.2

10

11

Ø 9.5mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 12mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 15mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 40mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1654 2000 x 1000 x 1.2mm 35% 2.1

GA P1656 2000 x 1000 x 1.2mm 40% 1.9

GA P1689 2000 x 1000 x 1.2mm 40% 1.9

GA P1798 2000 x 1000 x 2.0mm 40% 3.24

GA P1625 2500 x 1250 x 1.2mm 35% 2.1

GA P1687 2500 x 1250 x 1.2mm 40% 1.9

GA P1690 2000 x 1000 x 2.0mm 40% 3.2

GA P1800 2500 x 1250 x 2.0mm 40% 3.24

GA P1684 2000 x 1000 x 2.0mm 35% 3.5

GA P1686 2000 x 1000 x 2.0mm 40% 3.2

GA P1691 2500 x 1250 x 2.0mm 40% 3.2

GA P1685 2500 x 1250 x 2.0mm 35% 3.5

GA P1688 2500 x 1250 x 2.0mm 40% 3.2

GA P1676 2000 x 1000 x 3.0mm 40% 4.9

GA P1642 2000 x 1000 x 3.0mm 35% 5.3

GA P1674 2000 x 1000 x 3.0mm 40% 4.9

GA P1677 2500 x 1250 x 3.0mm 40% 4.9

GA P1643 2500 x 1250 x 3.0mm 35% 5.3

GA P1675 2500 x 1250 x 3.0mm 40% 4.9

Ø 19mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 22.2mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 31.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 1.3mm Holes

Product Ref. Sheet size

GA PSP613 2000 x 1000 x 1.2mm 8% 3.0

Ø 3mm Holes

Product Ref. Sheet size

Open area kg/m2

Open area kg/m2

Ø 1.6mm Holes

Product Ref. Sheet size

GA PSP616 2000 x 1000 x 1.2mm 8% 3.0

Ø 6.3mm Holes

Product Ref. Sheet size

Open area kg/m2

Open area kg/m2

Ø 12mm Holes

Product Ref. Sheet size

Open area kg/m2

GA P1623 2000 x 1000 x 2.0mm 40% 3.2

GA P1624 2000 x 1000 x 2.0mm 44% 3.0

GA P1629 2000 x 1000 x 2.0mm 44% 3.0

GA PSP631 2000 x 1000 x 1.2mm 12% 2.9

GA PSP641 2000 x 1000 x 1.2mm 15% 2.8

GA PSP650 2000 x 1000 x 2.0mm 23% 4.2

GA P1692 2500 x 1250 x 2.0mm 40% 3.2

GA P1672 2500 x 1250 x 2.0mm 44% 3.0

GA P1626 2500 x 1250 x 2.0mm 44% 3.0

GA PSP632 2000 x 1000 x 2.0mm 12% 4.7

GA PSP642 2000 x 1000 x 2.0mm 15% 4.6

GA PSP651 2500 x 1250 x 2.0mm 23% 4.2

GA P1678 2000 x 1000 x 3.0mm 40% 4.9

GA P1628 2000 x 1000 x 3.0mm 44% 4.5

GA P1630 2000 x 1000 x 3.0mm 44% 4.5

GA PSP644 2000 x 1000 x 3.0mm 15% 6.9

GA PSP652 2000 x 1000 x 3.0mm 23% 6.2

GA P1679 2500 x 1250 x 3.0mm 40% 4.9

GA P1673 2500 x 1250 x 3.0mm 44% 4.5

GA P1636 2500 x 1250 x 3.0mm 44% 4.5

GA PSP645 2500 x 1250 x 3.0mm 15% 6.9

GA PSP653 2500 x 1250 x 3.0mm 23% 6.2

10

11

Ø 15mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 19mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 22.2mm Holes

Product Ref. Sheet size

Open area kg/m2

GA PSP692 2000 x 1000 x 2.0mm 34% 3.6

GA PSP672 2000 x 1000 x 2.0mm 37% 3.4

GA PSP655 2500 x 1250 x 2.0mm 20% 4.3

GA PSP658 2500 x 1250 x 2.0mm 34% 3.6

GA PSP674 2500 x 1250 x 2.0mm 37% 3.4

GA PSP656 2000 x 1000 x 3.0mm 20% 6.5

GA PSP659 2000 x 1000 x 3.0mm 34% 5.4

GA PSP673 2000 x 1000 x 3.0mm 37% 5.1

GA PSP657 2500 x 1250 x 3.0mm 20% 6.5

GA PSP660 2500 x 1250 x 3.0mm 34% 5.4

GA PSP675 2500 x 1250 x 3.0mm 37% 5.1

Kings Wharf, Reading. Design: 1A UK

Exeter University. Design: Bailey Partnership

GA PSP654 2000 x 1000 x 2.0mm 20% 4.3

13

Ø 15mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 19mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 22.2mm Holes

Product Ref. Sheet size

Open area kg/m2

GA PSP692 2000 x 1000 x 2.0mm 34% 3.6

GA PSP672 2000 x 1000 x 2.0mm 37% 3.4

GA PSP655 2500 x 1250 x 2.0mm 20% 4.3

GA PSP658 2500 x 1250 x 2.0mm 34% 3.6

GA PSP674 2500 x 1250 x 2.0mm 37% 3.4

GA PSP656 2000 x 1000 x 3.0mm 20% 6.5

GA PSP659 2000 x 1000 x 3.0mm 34% 5.4

GA PSP673 2000 x 1000 x 3.0mm 37% 5.1

GA PSP657 2500 x 1250 x 3.0mm 20% 6.5

GA PSP660 2500 x 1250 x 3.0mm 34% 5.4

GA PSP675 2500 x 1250 x 3.0mm 37% 5.1

Kings Wharf, Reading. Design: 1A UK

Exeter University. Design: Bailey Partnership

GA PSP654 2000 x 1000 x 2.0mm 20% 4.3

13

The Frames, Shoreditch, EC2A. Design: HG Construction Ltd National Exhibition Centre, Birmingham. Design: QDOS Exhibitions Ltd

Ø 31.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 40mm Holes Diagonal

Ø 40mm Holes

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PSP626 2000 x 1000 x 2.0mm 35% 3.5

GA PSP694 2000 x 1000 x 2.0mm 26% 4.0

GA P1799 2000 x 1000 x 2.0mm 26% 4.0

GA PSP627 2500 x 1250 x 2.0mm 35% 3.5

GA PSP693 2500 x 1250 x 2.0mm 26% 4.0

GA P1801 2500 x 1250 x 2.0mm 26% 4.0

GA PSP636 2000 x 1000 x 3.0mm 35% 5.3 GA PSP637 2500 x 1250 x 3.0mm 35% 5.3

15

The Frames, Shoreditch, EC2A. Design: HG Construction Ltd National Exhibition Centre, Birmingham. Design: QDOS Exhibitions Ltd

Ø 31.7mm Holes

Product Ref. Sheet size

Open area kg/m2

Ø 40mm Holes Diagonal

Ø 40mm Holes

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PSP626 2000 x 1000 x 2.0mm 35% 3.5

GA PSP694 2000 x 1000 x 2.0mm 26% 4.0

GA P1799 2000 x 1000 x 2.0mm 26% 4.0

GA PSP627 2500 x 1250 x 2.0mm 35% 3.5

GA PSP693 2500 x 1250 x 2.0mm 26% 4.0

GA P1801 2500 x 1250 x 2.0mm 26% 4.0

GA PSP636 2000 x 1000 x 3.0mm 35% 5.3 GA PSP637 2500 x 1250 x 3.0mm 35% 5.3

15

SQUARE HOLES

□

□

3mm Holes

Product Ref. Sheet size

Open area kg/m2

GA PS1660 2000 x 1000 x 1.2mm 44% 1.8

Product Ref. Sheet size

Workington Library, Cumbria.

Product Ref. Sheet size

Open area kg/m2

GA PS1621 2000 x 1000 x 1.2mm 44% 1.8

GA PS1612 2000 x 1000 x 2.0mm 44% 3.0

GA PS1622 2000 x 1000 x 2.0mm 44% 3.0

GA PS1614 2000 x 1000 x 3.0mm 44% 4.5

GA PS1624 2000 x 1000 x 3.0mm 44% 4.5

GA PS1615 2500 x 1250 x 3.0mm 44% 4.5

GA PS1627 2500 x 1250 x 3.0mm 44% 4.5

□

Open area kg/m2

Open area kg/m2

10mm Holes

GA PS1661 2000 x 1000 x 1.2mm 44% 1.8

□

12.7mm Holes

Product Ref. Sheet size

□

6mm Holes

□

15mm Holes

Product Ref. Sheet size

Open area kg/m2

19mm Holes

Product Ref. Sheet size

Open area kg/m2

GA PS1662 2000 x 1000 x 1.2mm 44% 1.8

GA PS1695 2000 x 1000 x 2.0mm 56% 2.3

GA PS1674 2000 x 1000 x 2.0mm 44% 1.8

GA PS1663 2500 x 1250 x 1.2mm 44% 1.8

GA PS1634 2000 x 1000 x 3.0mm 56% 3.6

GA PS1664 2500 x 1250 x 2.0mm 44% 3.0

GA PS1670 2000 x 1000 x 2.0mm 44% 3.0

GA PS1635 2500 x 1250 x 3.0mm 56% 3.6

GA PS1675 2000 x 1000 x 3.0mm 44% 4.5

GA PS1693 2500 x 1250 x 2.0mm 44% 3.0

GA PS1665 2500 x 1250 x 3.0mm 44% 4.5

GA PS1694 2000 x 1000 x 3.0mm 44% 4.5 GA PS1671 2500 x 1250 x 3.0mm 44% 4.5

17

SQUARE HOLES

□

□

3mm Holes

Product Ref. Sheet size

Open area kg/m2

GA PS1660 2000 x 1000 x 1.2mm 44% 1.8

Product Ref. Sheet size

Workington Library, Cumbria.

Product Ref. Sheet size

Open area kg/m2

GA PS1621 2000 x 1000 x 1.2mm 44% 1.8

GA PS1612 2000 x 1000 x 2.0mm 44% 3.0

GA PS1622 2000 x 1000 x 2.0mm 44% 3.0

GA PS1614 2000 x 1000 x 3.0mm 44% 4.5

GA PS1624 2000 x 1000 x 3.0mm 44% 4.5

GA PS1615 2500 x 1250 x 3.0mm 44% 4.5

GA PS1627 2500 x 1250 x 3.0mm 44% 4.5

□

Open area kg/m2

Open area kg/m2

10mm Holes

GA PS1661 2000 x 1000 x 1.2mm 44% 1.8

□

12.7mm Holes

Product Ref. Sheet size

□

6mm Holes

□

15mm Holes

Product Ref. Sheet size

Open area kg/m2

19mm Holes

Product Ref. Sheet size

Open area kg/m2

GA PS1662 2000 x 1000 x 1.2mm 44% 1.8

GA PS1695 2000 x 1000 x 2.0mm 56% 2.3

GA PS1674 2000 x 1000 x 2.0mm 44% 1.8

GA PS1663 2500 x 1250 x 1.2mm 44% 1.8

GA PS1634 2000 x 1000 x 3.0mm 56% 3.6

GA PS1664 2500 x 1250 x 2.0mm 44% 3.0

GA PS1670 2000 x 1000 x 2.0mm 44% 3.0

GA PS1635 2500 x 1250 x 3.0mm 56% 3.6

GA PS1675 2000 x 1000 x 3.0mm 44% 4.5

GA PS1693 2500 x 1250 x 2.0mm 44% 3.0

GA PS1665 2500 x 1250 x 3.0mm 44% 4.5

GA PS1694 2000 x 1000 x 3.0mm 44% 4.5 GA PS1671 2500 x 1250 x 3.0mm 44% 4.5

17

Hackney Marshes Centre. Design: Stanton Williams Dilbag Cloth House, Bradford. Design: Christopher Pratts Contracts

□

Product Ref. Sheet size

Open area kg/m2

□

□

25mm Holes

25mm Holes Diagonal

25mm Holes

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PS1640 2000 x 1000 x 2.0mm 40% 3.2

GA PS1641 2000 x 1000 x 2.0mm 17% 4.5

GA PD113 2000 x 1000 x 2.0mm 17% 4.5

GA PS1642 2000 x 1000 x 3.0mm 40% 4.9

GA PS1643 2000 x 1000 x 3.0mm 17% 6.7

GA PD114 2000 x 1000 x 3.0mm 17% 6.7

GA PS1696 2500 x 1250 x 2.0mm 40% 3.2

GA PS1698 2500 x 1250 x 2.0mm 17% 4.5

GA PD109 2500 x 1250 x 2.0mm 17% 4.5

GA PS1697 2500 x 1250 x 3.0mm 40% 4.9

GA PS1699 2500 x 1250 x 3.0mm 17% 6.7

GA PD110 2500 x 1250 x 3.0mm 17% 6.7

19

Hackney Marshes Centre. Design: Stanton Williams Dilbag Cloth House, Bradford. Design: Christopher Pratts Contracts

□

Product Ref. Sheet size

Open area kg/m2

□

□

25mm Holes

25mm Holes Diagonal

25mm Holes

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PS1640 2000 x 1000 x 2.0mm 40% 3.2

GA PS1641 2000 x 1000 x 2.0mm 17% 4.5

GA PD113 2000 x 1000 x 2.0mm 17% 4.5

GA PS1642 2000 x 1000 x 3.0mm 40% 4.9

GA PS1643 2000 x 1000 x 3.0mm 17% 6.7

GA PD114 2000 x 1000 x 3.0mm 17% 6.7

GA PS1696 2500 x 1250 x 2.0mm 40% 3.2

GA PS1698 2500 x 1250 x 2.0mm 17% 4.5

GA PD109 2500 x 1250 x 2.0mm 17% 4.5

GA PS1697 2500 x 1250 x 3.0mm 40% 4.9

GA PS1699 2500 x 1250 x 3.0mm 17% 6.7

GA PD110 2500 x 1250 x 3.0mm 17% 6.7

19

Margery Street, London WC1

SQUARE HOLES DIAGONAL

□

□

3mm Holes Diagonal

Product Ref. Sheet size

Open area kg/m2

GA PD100 2000 x 1000 x 1.2mm 44% 1.8

Product Ref. Sheet size

GA PD104 2000 x 1000 x 2.0mm 44% 3.0

□

Product Ref. Sheet size

Open area kg/m2

19mm Holes Diagonal

35mm

Holes Diagonal

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PD107 2000 x 1000 x 2mm 56%

2.3

Product Ref. Sheet size

Open area kg/m2

GA PD108 2000 x 1000 x 2.0mm 44% 3.0

GA PD106 2000 x 1000 x 2.0mm 44% 3.0

GA PD119 2000 x 1000 x 3mm 56%

3.6

GA PD121 2500 x 1250 x 2.0mm 44% 3.0

GA PD120 2500 x 1250 x 3mm 56%

3.6

GA PD122 2000 x 1000 x 3.0mm 44% 4.5

GA PS1644 2000 x 1000 x 2.0mm 40% 3.2

GA PS1645 2000 x 1000 x 2.0mm 17% 4.5

GA PD115 2000 x 1000 x 2.0mm 17% 4.5

GA PD117 2000 x 1000 x 3.0mm 44% 4.5

GA PS1646 2000 x 1000 x 3.0mm 40% 4.9

GA PS1647 2000 x 1000 x 3.0mm 17% 6.7

GA PD116 2000 x 1000 x 3.0mm 17% 6.7

GA PD118 2500 x 1250 x 3.0mm 44% 4.5

GA PS1666 2500 x 1250 x 2.0mm 40% 3.2

GA PS1668 2500 x 1250 x 2.0mm 17% 4.5

GA PD111 2500 x 1250 x 2.0mm 17% 4.5

GA PS1667 2500 x 1250 x 3.0mm 40% 4.9

GA PS1669 2500 x 1250 x 3.0mm 17% 6.7

GA PD112 2500 x 1250 x 3.0mm 17% 6.7

20

□

15mm Holes Diagonal

□

□

35mm Holes

GA PD105 2000 x 1000 x 1.2mm 44% 1.8 Open area kg/m2

Open area kg/m2

GA PD102 2000 x 1000 x 2.0mm 44% 3.0

□

Product Ref. Sheet size

Product Ref. Sheet size

GA PD103 2000 x 1000 x 1.2mm 44% 1.8

Holes Diagonal

□

Open area kg/m2

10mm Holes Diagonal

GA PD101 2000 x 1000 x 1.2mm 44% 1.8

12.7mm

35mm Holes

□

6mm Holes Diagonal

GA PD123 2500 x 1250 x 3.0mm 44% 4.5

21

Margery Street, London WC1

SQUARE HOLES DIAGONAL

□

□

3mm Holes Diagonal

Product Ref. Sheet size

Open area kg/m2

GA PD100 2000 x 1000 x 1.2mm 44% 1.8

Product Ref. Sheet size

GA PD104 2000 x 1000 x 2.0mm 44% 3.0

□

Product Ref. Sheet size

Open area kg/m2

19mm Holes Diagonal

35mm

Holes Diagonal

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PD107 2000 x 1000 x 2mm 56%

2.3

Product Ref. Sheet size

Open area kg/m2

GA PD108 2000 x 1000 x 2.0mm 44% 3.0

GA PD106 2000 x 1000 x 2.0mm 44% 3.0

GA PD119 2000 x 1000 x 3mm 56%

3.6

GA PD121 2500 x 1250 x 2.0mm 44% 3.0

GA PD120 2500 x 1250 x 3mm 56%

3.6

GA PD122 2000 x 1000 x 3.0mm 44% 4.5

GA PS1644 2000 x 1000 x 2.0mm 40% 3.2

GA PS1645 2000 x 1000 x 2.0mm 17% 4.5

GA PD115 2000 x 1000 x 2.0mm 17% 4.5

GA PD117 2000 x 1000 x 3.0mm 44% 4.5

GA PS1646 2000 x 1000 x 3.0mm 40% 4.9

GA PS1647 2000 x 1000 x 3.0mm 17% 6.7

GA PD116 2000 x 1000 x 3.0mm 17% 6.7

GA PD118 2500 x 1250 x 3.0mm 44% 4.5

GA PS1666 2500 x 1250 x 2.0mm 40% 3.2

GA PS1668 2500 x 1250 x 2.0mm 17% 4.5

GA PD111 2500 x 1250 x 2.0mm 17% 4.5

GA PS1667 2500 x 1250 x 3.0mm 40% 4.9

GA PS1669 2500 x 1250 x 3.0mm 17% 6.7

GA PD112 2500 x 1250 x 3.0mm 17% 6.7

20

□

15mm Holes Diagonal

□

□

35mm Holes

GA PD105 2000 x 1000 x 1.2mm 44% 1.8 Open area kg/m2

Open area kg/m2

GA PD102 2000 x 1000 x 2.0mm 44% 3.0

□

Product Ref. Sheet size

Product Ref. Sheet size

GA PD103 2000 x 1000 x 1.2mm 44% 1.8

Holes Diagonal

□

Open area kg/m2

10mm Holes Diagonal

GA PD101 2000 x 1000 x 1.2mm 44% 1.8

12.7mm

35mm Holes

□

6mm Holes Diagonal

GA PD123 2500 x 1250 x 3.0mm 44% 4.5

21

Outernet London. Design: Archer Humphryes Architects

Outernet. Archer Humphryes Architects

HEXAGONAL HOLES

6mm Hex

Product Ref. Sheet size

Open area kg/m2

GA PX301 2000 x 1000 x 1.2mm 52% 1.6

9mm Hex

Product Ref. Sheet size

Open area kg/m2

12mm Hex

Product Ref. Sheet size

Open area kg/m2

GA PX302 2000 x 1000 x 1.2mm 41% 1.9

GA PX305 2000 x 1000 x 2.0mm 56% 2.4

GA PX303 2000 x 1000 x 2.0mm 41% 3.2

GA PX306 2500 x 1250 x 2.0mm 56% 2.4

GA PX304 2500 x 1250 x 2.0mm 41% 3.2

23

Outernet London. Design: Archer Humphryes Architects

Outernet. Archer Humphryes Architects

HEXAGONAL HOLES

6mm Hex

Product Ref. Sheet size

Open area kg/m2

GA PX301 2000 x 1000 x 1.2mm 52% 1.6

9mm Hex

Product Ref. Sheet size

Open area kg/m2

12mm Hex

Product Ref. Sheet size

Open area kg/m2

GA PX302 2000 x 1000 x 1.2mm 41% 1.9

GA PX305 2000 x 1000 x 2.0mm 56% 2.4

GA PX303 2000 x 1000 x 2.0mm 41% 3.2

GA PX306 2500 x 1250 x 2.0mm 56% 2.4

GA PX304 2500 x 1250 x 2.0mm 41% 3.2

23

Outernet London. Design: Archer Humphryes Architects

15mm Hex

Product Ref.

Sheet size

GA PX307 GA PX308

20mm Hex

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 2.0mm

56%

2.4

GA PX309

2000 x 1000 x 2.0mm

59%

2.2

2500 x 1250 x 2.0mm

56%

2.4

GA PX310

2500 x 1250 x 2.0mm

59%

2.2

25

Outernet London. Design: Archer Humphryes Architects

15mm Hex

Product Ref.

Sheet size

GA PX307 GA PX308

20mm Hex

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 2.0mm

56%

2.4

GA PX309

2000 x 1000 x 2.0mm

59%

2.2

2500 x 1250 x 2.0mm

56%

2.4

GA PX310

2500 x 1250 x 2.0mm

59%

2.2

25

20x4mm Staggered

Product Ref.

Sheet size

GA PSS201 GA PSS202

26

Pimlico Academy, London. (Rebuild Architect): Architecture PLB.

Maggies Centre. Design: Rogers Stirk Harbour & Partners.

SLOTTED HOLES

25x6mm Staggered

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 1.2mm

40%

1.9

GA PSS251

2000 x 1000 x 2.0mm

40%

3.2

GA PSS252

20x4mm Parallel

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 1.2mm

44%

1.8

GA PPS201

2000 x 1000 x 2.0mm

44%

3.0

GA PPS202

25x6mm Parallel

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 1.2mm

40%

1.9

GA PPS251

2000 x 1000 x 1.2mm

44%

1.8

2000 x 1000 x 2.0mm

40%

3.4

GA PPS252

2000 x 1000 x 2.0mm

44%

3.0

27

20x4mm Staggered

Product Ref.

Sheet size

GA PSS201 GA PSS202

26

Pimlico Academy, London. (Rebuild Architect): Architecture PLB.

Maggies Centre. Design: Rogers Stirk Harbour & Partners.

SLOTTED HOLES

25x6mm Staggered

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 1.2mm

40%

1.9

GA PSS251

2000 x 1000 x 2.0mm

40%

3.2

GA PSS252

20x4mm Parallel

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 1.2mm

44%

1.8

GA PPS201

2000 x 1000 x 2.0mm

44%

3.0

GA PPS202

25x6mm Parallel

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 1.2mm

40%

1.9

GA PPS251

2000 x 1000 x 1.2mm

44%

1.8

2000 x 1000 x 2.0mm

40%

3.4

GA PPS252

2000 x 1000 x 2.0mm

44%

3.0

27

80x15mm Staggered

80x15mm Parallel

Product Ref.

Sheet size

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

GA PSS262

2000 x 1000 x 2.0mm

23%

4.2

GA PPS255

2000 x 1000 x 2.0mm

23%

4.2

GA PSS263

2000 x 1000 x 3.0mm

23%

6.2

GA PPS256

2000 x 1000 x 3.0mm

23%

6.2

GA PSS272

2500 x 1250 x 2.0mm

23%

4.2

GA PPS282

2500 x 1250 x 2.0mm

23%

4.2

GA PSS273

2500 x 1250 x 3.0mm

23%

6.2

GA PPS283

2500 x 1250 x 3.0mm

23%

6.2

80x25mm Staggered

Product Ref.

Sheet size

GA PSS260

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 2.0mm

24%

4.1

GA PPS253

GA PSS261

2000 x 1000 x 3.0mm

24%

6.2

GA PSS270

2500 x 1250 x 2.0mm

24%

4.1

GA PSS271

2500 x 1250 x 3.0mm

24%

6.2

28

80x15mm Stag 90 °

80x25mm Parallel

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 2.0mm

44%

4.1

GA PHV104

2000 x 1000 x 2.0mm

GA PPS254

2000 x 1000 x 3.0mm

24%

6.2

GA PHV105

GA PPS280

2500 x 1250 x 2.0mm

24%

4.1

GA PHV106

GA PPS281

2500 x 1250 x 3.0mm

24%

6.2

GA PHV107

2500 x 1250 x 3.0mm

80x15mm Stag 45°

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

21%

4.2

GA PRS102

2000 x 1000 x 2.0mm

22%

4.2

2000 x 1000 x 3.0mm

21%

6.2

2500 x 1250 x 2.0mm

21%

4.2

GA PRS103

2000 x 1000 x 3.0mm

22%

6.2

GA PRS105

2500 x 1250 x 2.0mm

22%

4.2

21%

6.2

GA PRS106

2500 x 1250 x 3.0mm

22%

6.2

29

80x15mm Staggered

80x15mm Parallel

Product Ref.

Sheet size

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

GA PSS262

2000 x 1000 x 2.0mm

23%

4.2

GA PPS255

2000 x 1000 x 2.0mm

23%

4.2

GA PSS263

2000 x 1000 x 3.0mm

23%

6.2

GA PPS256

2000 x 1000 x 3.0mm

23%

6.2

GA PSS272

2500 x 1250 x 2.0mm

23%

4.2

GA PPS282

2500 x 1250 x 2.0mm

23%

4.2

GA PSS273

2500 x 1250 x 3.0mm

23%

6.2

GA PPS283

2500 x 1250 x 3.0mm

23%

6.2

80x25mm Staggered

Product Ref.

Sheet size

GA PSS260

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 2.0mm

24%

4.1

GA PPS253

GA PSS261

2000 x 1000 x 3.0mm

24%

6.2

GA PSS270

2500 x 1250 x 2.0mm

24%

4.1

GA PSS271

2500 x 1250 x 3.0mm

24%

6.2

28

80x15mm Stag 90 °

80x25mm Parallel

Open area

kg/m2

Product Ref.

Sheet size

2000 x 1000 x 2.0mm

44%

4.1

GA PHV104

2000 x 1000 x 2.0mm

GA PPS254

2000 x 1000 x 3.0mm

24%

6.2

GA PHV105

GA PPS280

2500 x 1250 x 2.0mm

24%

4.1

GA PHV106

GA PPS281

2500 x 1250 x 3.0mm

24%

6.2

GA PHV107

2500 x 1250 x 3.0mm

80x15mm Stag 45°

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

21%

4.2

GA PRS102

2000 x 1000 x 2.0mm

22%

4.2

2000 x 1000 x 3.0mm

21%

6.2

2500 x 1250 x 2.0mm

21%

4.2

GA PRS103

2000 x 1000 x 3.0mm

22%

6.2

GA PRS105

2500 x 1250 x 2.0mm

22%

4.2

21%

6.2

GA PRS106

2500 x 1250 x 3.0mm

22%

6.2

29

GA SUPER SAMPLES SERVICE There is no substitute for viewing and handling the ‘real thing’.

Our Super Samples Service responds quickly and efficiently (within 24 hours) to perforated samples requests submitted via email (sales@goodingalum.com) or online www.goodingalum.com Standard size samples are normally either 150 x 100mm or for the larger pattern sizes 150 x 150mm.

Your samples are posted 1st Class in robust cardboard packaging, designed to ensure items are received in good condition.

80x25mm Stag 90°

30

Product Ref.

Sheet size

GA PHV102

80x25mm Stag 45°

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 2.0mm

20%

4.3

GA PRS100

2000 x 1000 x 2.0mm

20%

4.3

GA PHV103

2000 x 1000 x 3.0mm

20%

6.5

GA PHV108

2500 x 1250 x 2.0mm

20%

4.3

GA PRS101

2000 x 1000 x 3.0mm

20%

6.5

GA PRS108

2500 x 1250 x 2.0mm

20%

4.3

GA PHV109

2500 x 1250 x 3.0mm

20%

6.5

GA PRS104

2500 x 1250 x 3.0mm

20%

6.5

31

GA SUPER SAMPLES SERVICE There is no substitute for viewing and handling the ‘real thing’.

Our Super Samples Service responds quickly and efficiently (within 24 hours) to perforated samples requests submitted via email (sales@goodingalum.com) or online www.goodingalum.com Standard size samples are normally either 150 x 100mm or for the larger pattern sizes 150 x 150mm.

Your samples are posted 1st Class in robust cardboard packaging, designed to ensure items are received in good condition.

80x25mm Stag 90°

30

Product Ref.

Sheet size

GA PHV102

80x25mm Stag 45°

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 2.0mm

20%

4.3

GA PRS100

2000 x 1000 x 2.0mm

20%

4.3

GA PHV103

2000 x 1000 x 3.0mm

20%

6.5

GA PHV108

2500 x 1250 x 2.0mm

20%

4.3

GA PRS101

2000 x 1000 x 3.0mm

20%

6.5

GA PRS108

2500 x 1250 x 2.0mm

20%

4.3

GA PHV109

2500 x 1250 x 3.0mm

20%

6.5

GA PRS104

2500 x 1250 x 3.0mm

20%

6.5

31

20x1.7mm 5 Slots 45°

Product Ref. Sheet size

Open area kg/m2

GA PSL540 2000 x 1000 x 1.2mm 29% 2.3

Product Ref. Sheet size

Open area kg/m2

Surrey University. Design: CD Partnership

GA PSL590 2000 x 1000 x 1.2mm 29% 2.3

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PSL541 2000 x 1000 x 1.2mm 39% 2.0

GA POV151 2000 x 1000 x 1.2mm 20% 2.6

GA PSL542 2000 x 1000 x 2.0mm 39% 3.3

GA POV152 2000 x 1000 x 2.0mm 20% 4.3

20x1.7mm 5 Slots 90°

Product Ref. Sheet size

15mm Elliptical Holes

25x2.5mm 5 Slots 45°

25x2.5mm 5 Slots 90°

Product Ref. Sheet size

Open area kg/m2

12x5mm Special

Product Ref. Sheet size

Open area kg/m2

GA PSL591 2000 x 1000 x 1.2mm 39% 2.0

GA PGR121 2000 x 1000 x 1.2mm 29% 2.3

GA PSL592 2000 x 1000 x 2.0mm 39% 3.3

GA PGR122 2000 x 1000 x 2.0mm 29% 3.8

33

20x1.7mm 5 Slots 45°

Product Ref. Sheet size

Open area kg/m2

GA PSL540 2000 x 1000 x 1.2mm 29% 2.3

Product Ref. Sheet size

Open area kg/m2

Surrey University. Design: CD Partnership

GA PSL590 2000 x 1000 x 1.2mm 29% 2.3

Open area kg/m2

Product Ref. Sheet size

Open area kg/m2

GA PSL541 2000 x 1000 x 1.2mm 39% 2.0

GA POV151 2000 x 1000 x 1.2mm 20% 2.6

GA PSL542 2000 x 1000 x 2.0mm 39% 3.3

GA POV152 2000 x 1000 x 2.0mm 20% 4.3

20x1.7mm 5 Slots 90°

Product Ref. Sheet size

15mm Elliptical Holes

25x2.5mm 5 Slots 45°

25x2.5mm 5 Slots 90°

Product Ref. Sheet size

Open area kg/m2

12x5mm Special

Product Ref. Sheet size

Open area kg/m2

GA PSL591 2000 x 1000 x 1.2mm 39% 2.0

GA PGR121 2000 x 1000 x 1.2mm 29% 2.3

GA PSL592 2000 x 1000 x 2.0mm 39% 3.3

GA PGR122 2000 x 1000 x 2.0mm 29% 3.8

33

S P E C I A L H O L E PAT T E R N S

10x10mm Staggered

Product Ref.

Sheet size

GA PCL101 GA PCL102

10x6mm Staggered

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 1.2mm

46%

1.8

GA PCR101

2000 x 1000 x 1.2mm

43%

1.9

2000 x 1000 x 2.0mm

46%

2.9

GA PCR102

2000 x 1000 x 2.0mm

43%

3.0

90° 17x17mm

Private residence, Bermondsey. DMG Design UK

90° 18x18mm

Product Ref.

Sheet size

Open area

kg/m2

Product Ref.

Sheet size

GA PQS181 GA PQS182

Open area

kg/m2

2000 x 1000 x 1.2mm

35%

2.0

GA PUC171

2000 x 1000 x 1.2mm

24%

2.5

2000 x 1000 x 2.0mm

35%

3.5

GA PUC172

2000 x 1000 x 2.0mm

24%

4.0

35

S P E C I A L H O L E PAT T E R N S

10x10mm Staggered

Product Ref.

Sheet size

GA PCL101 GA PCL102

10x6mm Staggered

Open area

kg/m2

Product Ref.

Sheet size

Open area

kg/m2

2000 x 1000 x 1.2mm

46%

1.8

GA PCR101

2000 x 1000 x 1.2mm

43%

1.9

2000 x 1000 x 2.0mm

46%

2.9

GA PCR102

2000 x 1000 x 2.0mm

43%

3.0

90° 17x17mm

Private residence, Bermondsey. DMG Design UK

90° 18x18mm

Product Ref.

Sheet size

Open area

kg/m2

Product Ref.

Sheet size

GA PQS181 GA PQS182

Open area

kg/m2

2000 x 1000 x 1.2mm

35%

2.0

GA PUC171

2000 x 1000 x 1.2mm

24%

2.5

2000 x 1000 x 2.0mm

35%

3.5

GA PUC172

2000 x 1000 x 2.0mm

24%

4.0

35

UNDERSTANDING P E R F O R AT I N G P R O C E S S E S Blank areas/margins can be incorporated into specially perforated panels. Always check with our technical personnel to ensure the suitability of your perforated / plain layout before committing to specification.

Broken edges (absence of border margins) are not supplied by GA on standard stock size or specially perforated panels. Shearing to size from stock panels may result in broken edges.

Cleanliness on mill finish materials may vary from a relatively dry finish to a light residue of water soluble lubricant (necessary for the perforating process). It is advisable to arrange for mill finish materials to be wiped over on site, after installation.

End margins with staggered hole arrangements can result in either a finished or unfinished pattern at each end of the work piece.

Flatness in perforated sheets is never absolute. Factors including overall panel size, the ratio of perforated to plain areas, the % open area, material thickness, all effect the degree of distortion. Our technologically advanced production methods minimise these difficulties and help to produce commercially and visually acceptable degrees of flatness.

Hole size relative to material thickness is an important consideration. Avoid approaching a 1:1 ratio, i.e. 3.5mm hole dia in 3mm thickness. Instances of similar hole size and material thickness result in a less than satisfactory appearance and possibly tool breakage, causing production delays and other complications.

Ideal perforating material thicknesses from a quality processing point of view are between 1 and 3mm.

Outernet London. Design: Archer Humphryes Architects

Short lead times can be provided from the selection of stock sheet configurations.

Increased rigidity can be designed into a perforated panel by increasing material thickness, incorporating a plain border, and / or a surround frame.

Material costs can be minimised by selecting from our range of standard hole size / shape configurations. Specially perforated panels can be produced economically and quickly.

Bespoke hole layouts can involve longer lead times and new tooling charges.

Missing or imperfect hole shapes result from broken or damaged punches. This is not an unusual occurrence when perforating large numbers of small holes. It is standard industry practice to supply an acceptable % spoilage factor. GA policy aims to provide as near possible 100% complete perforations.

37

UNDERSTANDING P E R F O R AT I N G P R O C E S S E S Blank areas/margins can be incorporated into specially perforated panels. Always check with our technical personnel to ensure the suitability of your perforated / plain layout before committing to specification.

Broken edges (absence of border margins) are not supplied by GA on standard stock size or specially perforated panels. Shearing to size from stock panels may result in broken edges.

Cleanliness on mill finish materials may vary from a relatively dry finish to a light residue of water soluble lubricant (necessary for the perforating process). It is advisable to arrange for mill finish materials to be wiped over on site, after installation.

End margins with staggered hole arrangements can result in either a finished or unfinished pattern at each end of the work piece.

Flatness in perforated sheets is never absolute. Factors including overall panel size, the ratio of perforated to plain areas, the % open area, material thickness, all effect the degree of distortion. Our technologically advanced production methods minimise these difficulties and help to produce commercially and visually acceptable degrees of flatness.

Hole size relative to material thickness is an important consideration. Avoid approaching a 1:1 ratio, i.e. 3.5mm hole dia in 3mm thickness. Instances of similar hole size and material thickness result in a less than satisfactory appearance and possibly tool breakage, causing production delays and other complications.

Ideal perforating material thicknesses from a quality processing point of view are between 1 and 3mm.

Outernet London. Design: Archer Humphryes Architects

Short lead times can be provided from the selection of stock sheet configurations.

Increased rigidity can be designed into a perforated panel by increasing material thickness, incorporating a plain border, and / or a surround frame.

Material costs can be minimised by selecting from our range of standard hole size / shape configurations. Specially perforated panels can be produced economically and quickly.

Bespoke hole layouts can involve longer lead times and new tooling charges.

Missing or imperfect hole shapes result from broken or damaged punches. This is not an unusual occurrence when perforating large numbers of small holes. It is standard industry practice to supply an acceptable % spoilage factor. GA policy aims to provide as near possible 100% complete perforations.

37

When specifying perforated ‘specials’ please confer with our Technical Sales Department before finalising a design. Various min / max production ratios apply to hole size, bridge distance, material thickness, end and side margins etc, which need to be observed to avoid possible material distortion and or fracture.

‘Open area’ in many applications, is of critical importance for reasons of air flow, screening etc. Please refer to the percentage open areas given for each GA standard pattern.

Quoted percentage open areas given in our website relate to the ratio of the total area of the holes to the area of perforated sheet, excluding the unperforated margins.

Plain margins on pre-punched sheets might or will be lost once sheared to size.

Polythene film on the punch face side only, is applied to help protect the material surface from the rigours of the perforating process.

Production tolerances for bespoke items incorporating perforations are less precise than for plain sheet working. Please refer to our GA5* Processing Standard for details.

Round holes with a 60˚ staggered pattern, are the most common hole arrangement, this is due to the inherent strength and wide range of available open areas.

Side margins should ideally be kept to an even dimension of less than 80mm, this helps to reduce surface camber and distortion.

Small quantities of ‘specials’ can often be economically and quickly produced by GA. Our bespoke software accurately calculates best use of materials and punching arrangements.

The Frames, Shoreditch, EC2A. Design: HG Construction Ltd

Standard size panels are shown with nominal overall dimensions, these can vary slightly depending on the necessity to ‘square’ sheets before perforating commences, and the degree of material ‘stretch’ during processing. Stock sheets are normally supplied with a minimum border margin.

The two sides of a perforated surface are not the same. The punch face side is where the punch enters the material and the burr side indicates the punch exit on the underside.

Visible faces should be indicated on unsymmetrical panels and fabrications as the punch face side is superior to the burr (underside). It is advisable to avoid specifying mill or anodised finishes when both sides of the sheet are to be closely viewed. Powder coating minimising these difficulties.

Square holes provide good visibility and air flow while providing decorative cover. Staggered patterns for rounds and squares will normally be the short dimension of the sheet. The straight row of holes is usually parallel to the sheet length

39

When specifying perforated ‘specials’ please confer with our Technical Sales Department before finalising a design. Various min / max production ratios apply to hole size, bridge distance, material thickness, end and side margins etc, which need to be observed to avoid possible material distortion and or fracture.

‘Open area’ in many applications, is of critical importance for reasons of air flow, screening etc. Please refer to the percentage open areas given for each GA standard pattern.

Quoted percentage open areas given in our website relate to the ratio of the total area of the holes to the area of perforated sheet, excluding the unperforated margins.

Plain margins on pre-punched sheets might or will be lost once sheared to size.

Polythene film on the punch face side only, is applied to help protect the material surface from the rigours of the perforating process.

Production tolerances for bespoke items incorporating perforations are less precise than for plain sheet working. Please refer to our GA5* Processing Standard for details.

Round holes with a 60˚ staggered pattern, are the most common hole arrangement, this is due to the inherent strength and wide range of available open areas.

Side margins should ideally be kept to an even dimension of less than 80mm, this helps to reduce surface camber and distortion.

Small quantities of ‘specials’ can often be economically and quickly produced by GA. Our bespoke software accurately calculates best use of materials and punching arrangements.

The Frames, Shoreditch, EC2A. Design: HG Construction Ltd

Standard size panels are shown with nominal overall dimensions, these can vary slightly depending on the necessity to ‘square’ sheets before perforating commences, and the degree of material ‘stretch’ during processing. Stock sheets are normally supplied with a minimum border margin.

The two sides of a perforated surface are not the same. The punch face side is where the punch enters the material and the burr side indicates the punch exit on the underside.

Visible faces should be indicated on unsymmetrical panels and fabrications as the punch face side is superior to the burr (underside). It is advisable to avoid specifying mill or anodised finishes when both sides of the sheet are to be closely viewed. Powder coating minimising these difficulties.

Square holes provide good visibility and air flow while providing decorative cover. Staggered patterns for rounds and squares will normally be the short dimension of the sheet. The straight row of holes is usually parallel to the sheet length

39

020 8692 2255

Catalogue design: Astrid Brisson

w w w. g o o d i n g a l u m . c o m