Connection of membrane to Velux flat window- Hot

Connection of bituminous roofing membrane to VELUX flat roof window Window type: CVP, CFP Materials: Bituminous primer Bottom layer: Fibreglass reinforced bituminous membrane (eg VEDATECT V 13 or G 200 DD) Intermediate layer: Bituminous membrane (eg VEDATECT G 200 S4, talc) Top layer: Elastomeric bituminous roofing membrane (eg VEDATECT PYE PV 200 S5) Tools: Propane burner Stanley knife with hook blade Galvanised clout nails, 2.8 x 25 mm Building silicone Note: Also follow the steps in the installation instructions enclosed with the flat roof window CVP/CFP.

1 Establish hole in roof according to installation instructions.

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Connection of bituminous roofing membrane to VELUX flat roof window Window type: CVP, CFP 2 Lead fibreglass reinforced bottom layer to the edge of the hole in the roof and fix with galvanised clout nails.

On plank roof constructions fix bottom layer with galvanised clout nails in overlap areas. Depending on area (inner, outer, corner area) fit nails with 5-10 cm intervals.

Ensure adhesion at overlaps.

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Connection of bituminous roofing membrane to VELUX flat roof window Window type: CVP, CFP 3 Apply bituminous primer on the entire surface of the kerb of the flat roof window.

Note!

The bitumen primer must be completely dry before continuing with the bottom layer.

4 Fix kerb to roof with 3.5 x 60 mm screws supplied according to the installation instructions.

Do not remove the protective foil until the installation has been completed!

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Connection of bituminous roofing membrane to VELUX flat roof window Window type: CVP, CFP 5 Lead intermediate layer to bottom edge of kerb and weld.

Note: Avoid direct contact between open burner flame and kerb!

6 Weld intermediate layer with the kerb.

Lead intermediate layer to upper edge of kerb.

Note: Avoid direct contact between open burner flame and kerb!

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Connection of bituminous roofing membrane to VELUX flat roof window Window type: CVP, CFP 7 Lead top layer (elastomeric bituminous roofing membrane) to the bottom edge of kerb and weld.

8 Weld top layer with kerb.

Lead top layer to upper edge of kerb.

9 CVP only: Fit rain sensor according to installation instructions.

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®VELUX and the VELUX logo are registered trademarks used under licence by the VELUX Group

Connection of bituminous roofing membrane to VELUX flat roof window Window type: CVP, CFP Remove protective foil from dome and insulating glass unit.

11 Fix dome with fasteners supplied.

Refer to installation instructions for operation/opening of VELUX flat roof window.

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®VELUX and the VELUX logo are registered trademarks used under licence by the VELUX Group