Existing & Proposed Loft Conversion Drawing Pack

ADMIN

INDEMNITY: 1. THE COPYRIGHT OF THIS DRAWING IS VESTED IN ROOFTOP ROOMS LTD AND IT MAY NOT BE REPRODUCED IN WHOLE OR PART OR USED FOR THE MANUFACTURE OF ANY ARTICLE WITHOUT THE EXPRESS PERMISSION OF THE COPYRIGHT HOLDERS. 2. ALL WORKMANSHIP AND MATERIALS, SERVICE INSTALLATIONS AND DEMOLITIONS TO COMPLY WITH THE LATEST RELEVANT BUILDING REGULATIONS, BRITISH STANDARDS, CODE OF PRACTICE AND IEE REGULATIONS. ALL DIMENSIONS AND LEVELS MUST BE CHECKED AND VERIFIED ON SITE PRIOR TO ORDERING, MANUFACTURING AND CONSTRUCTION. ALL DISCREPANCIES TO THE ARCHITECT'S DRAWINGS ARE TO BE BROUGHT TO THE ATTENTION OF ROOFTOP ROOMS LTD.

BATHROOM

KITCHEN

3. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH ALL RELEVANT ARCHITECT'S, SERVICE ENGINEER'S AND ROOFTOP ROOMS LTD DRAWINGS AND SPECIFICATIONS.

BEDROOM 1

Specification Ventilation Requirements: Habitable Rooms.

To be provided with ventilation openings having no less of an area than 5% of the floor area, and trickle ventilators having a total area of 8000mm².

Bathrooms.

To be provided via intermittent mechanical ventilation capable of extracting at a rate of 15 litres per second, and trickle ventilators having a total area of of 4000mm².

Staircases: Maximum rise to be 220mm and a minimum going of 220mm, pitch to be no greater than 42 degrees. Width to be 750mm between handrails. (all dimensions are provisional and are subject to verification by specialist designer on site prior to staircase manufacture commencing). Handrail at 900mm above pitch line. Minimum Vertical headroom to be no less than 2.0 metres above pitch line.

Balustrading to be provided below handrail and to all landings(height 900mm), with no gap between spindles to exceed 95mm. All tapered treads to have minimum equal goings at the centre to match does of the main flight. Minimum going is to be 50mm.

Enclosing Partitions: To be in 100x50mm studwork with 100mm Kingspan Thermawall TW55 insulation board to be laid between the studs, and 40mm Gyproc Thermaline Basic laid continuously internally with plaster skim finish.

Sloping Ceilings: 100x50mm rafters are to be provided with 60mm PIR insulation between rafters, with SF40, or other approved multi foil insulation stapled to underside of rafters and 38x25mm battens over with 13mm Duplex plasterboard with plaster skim finish.

Dormer Walls Cheeks: To be 110x50mm studwork with tile hanging (as specified on elevations), on cross battens over breathable felt on 12mm plywood sheathing externally. Dormer cheeks within 1.0m of the boundary are to have a layer of 9mm Promat Masterboard fixed between the plywood and studwork so as to provide half hour fire resistance from both sides. 100mm Kingspan Thermawall TW55 between studs.

Internally the walls are to be finished with 22mm Gyproc Thermaline Basic and plaster skim.

RECEPTION 2

HALL WC

WC

UTILITY

RECEPTION 1 STUDY

BEDROOM 4

BEDROOM 3

Smoke Alarms: Smoke alarms to be provided at ground floor hall, first and second floor landing areas, and to all habitable rooms ( heat detector to Kitchen). The Alarms are to be optical type, mains operated, connected to independent circuit, with battery back up all in accordance with BS5839 (part 6) 2004.

Alarms to be positioned 7.5M maximum from any habitable room door, and minimum 300 from walls, light fittings and not positioned over stairs. They are to be interlinked with colour coded light fittings.

Fire Precautions: Existing doors leading from stairway enclosures to habitable rooms and kitchen, to be retained. New doors to be FD30 door sets. New and existing walls forming stairway enclosures are to provide a minimum fire resistance of half an hour. The existing walls being of masonry construction and new walls being stud partitions as previously described.

Roof Lights: To be Velux type fitted in accordance with manufactures instructions, including proprietary flashing units. Roof joists doubled up all around roof lights.roof lights to be as close as match stated on drawing but may vary size on site.

Flat Roof (Cold Deck): Three Layers high performance built up felt to BS747: 1977 comprising first layer of Andersons Thermovent base layer partly bonded, second layer of Andersons HI 125 sanded underlay fully bonded, and third (cap sheet) layer of Andersons HI 350 Mineral surface sheeting fully bonded. All laid in accordance with the recommendations of CP144: Part 3 1970. Roof deck to be 18mm WPB plywood with joints taped with Andersons HT 125 taping strip, on 25x50mm battens to provide cross ventilation gap on firings to provide fall to flat roof of 1:40. Roof joist to be to engineering specification at 400 centres. Roof void to be ventilated as shown on drawings.

Continuous (no intrusions) 120mm Kingspan Thermapitch insulation between joists and 40mm continuous under joists with vapour control layer and 13mm DUPLEX Plasterboard finished with plaster skim.

BEDROOM 2

HALL

Energy Efficient Lighting: One Light fitting to every four to be energy efficient type.

Loft Floor Construction: 21mm tongue and Groove chipboard flooring to engineers specification. Existing lathe and plaster ceiling to be retained. Solid block noggins provided to floor joists at mid span.

First Floor Landing: Overlay first floor landing where forming part of fire protected escape route with 3.2mm dense hardboard to provide half hour fire resistance.

Surface Water Disposal: Rainwater goods to be PVC. Half round gutters to be 112mm dia. Rainwater pipes to be 63mm dia rainwater to discharge to existing surface water drainage to be investigated on site prior to works commencing.

Multiple Timber Beams: To be bolted together with 10mm bolts and toothed connectors at 600mm centres.

Sound insulation measures: 100mm Rockwool insulation to be laid between the existing ceiling joists above the existing ceiling, the floor boarding is to be continued throughout the eaves area to fully cover the first floor ceiling.

Flashing: All flashing, Cloaks and Soakers to be code 4 lead and a minimum 150mm in height.

Waste Plumbing: Plumbing to be in accordance with BS5572.Waste pipes to be in uPVC with solvent welded joints, so as follows: Common wastes 50mm dia.

Shower wastes 40mm dia.

Basin wastes 35mm dia.

WC wastes 100mm dia.

All appliances to be fitted with deep seal traps. Rodding access to be provided at all changes in direction and at base of soil and vent. Vertical soil and vent pipes to be 100mm dia. uPVC taken up 900mm above any opening window sections within 3.0M and finished with wire balloon.

Fire Resisting doors: To provide half hour fire resistance, type FD30. Frame stops to be 25x35mm screwed and glued or to be rebated. Doors to be fitted with intumescent strips and smoke seals.

Structural Steel Work: To be clean and rust free and painted with two coats of intumescent paint to provide half hour fire resistance. Beams to be installed in one length without splices unless specified by Structural Engineer.

Windows: To be 16mm spacer bar sealed unit double glazed with internal glazing to be Pilkington 'energyKare' low emissivity glass; in a style to match existing and to clients approval.

Partition Walls (Studwork): To be 100x50 vertical studs at 400mm centres with 100x50mm head and sole plates. 100x50mm horizontal noggins at 1200mm centres vertically and staggered. 12mm Fireline plasterboard and skim finish to both sides, void infilled with sound deadening quilt. Partitions to be constructed off doubled up joists where partitions are running parallel with joists.

Electrical Work: All wiring and electrical work to be designed, installed, inspected and tested by a competent person in accordance with the requirements of BS7671, the IEE 16th edition wiring guidance and Building Regulations Part P (electrical safety). The competent person shall be registered with an electrical self certification scheme authorised by the secretary of state.

The competent person is to send the Local Authority a self certification certificate within 30 days of the electrical works completion. The client must receive both a copy of the self-certification certificate and a BS7671 Electrical installation certificate.

Party Wall Insulation: Exisitng partywall to be insulated with 80mm Kingspan Kooltherm K18 dry lining board fixed to minimum 25x47mm treated softwood timber battens or metal firings.

FIRST FLOOR PLAN

GROUND FLOOR PLAN A

A

A

-

-

-

B

-

-

-

C

-

-

-

REV:

DESCRIPTION:

BY:

DATE:

STATUS:

CLIENT ISSUE

C:\Users\Sam\Pictures\Rooftop Rooms Logo.jpg

342 Baker Street, Enfield, Middlesex, EN1 3LH. CLIENT:

Client ADDRESS CITY POST CODE

ARCHITECT:

Rooftop Rooms 342 Baker Street Enfield EN1 3LH

SITE:

ADDRESS CITY, POSTCODE

TITLE:

Existing Plans

LOFT FLOOR PLAN

A

ROOF PLAN

A

SCALE AT A1:

DATE:

1:50 0 Scale 1:50

0.5

1.5

3

5m

PROJECT NO:

623

DRAWN:

27/05/2023 DRAWING NO:

01

CC

CHECKED:

REVISION:

CA

-

ADMIN

INDEMNITY: 1. THE COPYRIGHT OF THIS DRAWING IS VESTED IN ROOFTOP ROOMS LTD AND IT MAY NOT BE REPRODUCED IN WHOLE OR PART OR USED FOR THE MANUFACTURE OF ANY ARTICLE WITHOUT THE EXPRESS PERMISSION OF THE COPYRIGHT HOLDERS. 2. ALL WORKMANSHIP AND MATERIALS, SERVICE INSTALLATIONS AND DEMOLITIONS TO COMPLY WITH THE LATEST RELEVANT BUILDING REGULATIONS, BRITISH STANDARDS, CODE OF PRACTICE AND IEE REGULATIONS. ALL DIMENSIONS AND LEVELS MUST BE CHECKED AND VERIFIED ON SITE PRIOR TO ORDERING, MANUFACTURING AND CONSTRUCTION. ALL DISCREPANCIES TO THE ARCHITECT'S DRAWINGS ARE TO BE BROUGHT TO THE ATTENTION OF ROOFTOP ROOMS LTD. 3. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH ALL RELEVANT ARCHITECT'S, SERVICE ENGINEER'S AND ROOFTOP ROOMS LTD DRAWINGS AND SPECIFICATIONS.

Specification Ventilation Requirements: Habitable Rooms.

To be provided with ventilation openings having no less of an area than 5% of the floor area, and trickle ventilators having a total area of 8000mm².

Bathrooms.

To be provided via intermittent mechanical ventilation capable of extracting at a rate of 15 litres per second, and trickle ventilators having a total area of of 4000mm².

Staircases: Maximum rise to be 220mm and a minimum going of 220mm, pitch to be no greater than 42 degrees. Width to be 750mm between handrails. (all dimensions are provisional and are subject to verification by specialist designer on site prior to staircase manufacture commencing). Handrail at 900mm above pitch line. Minimum Vertical headroom to be no less than 2.0 metres above pitch line.

Balustrading to be provided below handrail and to all landings(height 900mm), with no gap between spindles to exceed 95mm. All tapered treads to have minimum equal goings at the centre to match does of the main flight. Minimum going is to be 50mm.

Enclosing Partitions: To be in 100x50mm studwork with 100mm Kingspan Thermawall TW55 insulation board to be laid between the studs, and 40mm Gyproc Thermaline Basic laid continuously internally with plaster skim finish.

Sloping Ceilings: 100x50mm rafters are to be provided with 60mm PIR insulation between rafters, with SF40, or other approved multi foil insulation stapled to underside of rafters and 38x25mm battens over with 13mm Duplex plasterboard with plaster skim finish.

Dormer Walls Cheeks: To be 110x50mm studwork with tile hanging (as specified on elevations), on cross battens over breathable felt on 12mm plywood sheathing externally. Dormer cheeks within 1.0m of the boundary are to have a layer of 9mm Promat Masterboard fixed between the plywood and studwork so as to provide half hour fire resistance from both sides. 100mm Kingspan Thermawall TW55 between studs.

Internally the walls are to be finished with 22mm Gyproc Thermaline Basic and plaster skim.

Smoke Alarms: Smoke alarms to be provided at ground floor hall, first and second floor landing areas, and to all habitable rooms ( heat detector to Kitchen). The Alarms are to be optical type, mains operated, connected to independent circuit, with battery back up all in accordance with BS5839 (part 6) 2004.

Alarms to be positioned 7.5M maximum from any habitable room door, and minimum 300 from walls, light fittings and not positioned over stairs. They are to be interlinked with colour coded light fittings.

Fire Precautions: Existing doors leading from stairway enclosures to habitable rooms and kitchen, to be retained. New doors to be FD30 door sets. New and existing walls forming stairway enclosures are to provide a minimum fire resistance of half an hour. The existing walls being of masonry construction and new walls being stud partitions as previously described.

Roof Lights: To be Velux type fitted in accordance with manufactures instructions, including proprietary flashing units. Roof joists doubled up all around roof lights.roof lights to be as close as match stated on drawing but may vary size on site.

Flat Roof (Cold Deck): Three Layers high performance built up felt to BS747: 1977 comprising first layer of Andersons Thermovent base layer partly bonded, second layer of Andersons HI 125 sanded underlay fully bonded, and third (cap sheet) layer of Andersons HI 350 Mineral surface sheeting fully bonded. All laid in accordance with the recommendations of CP144: Part 3 1970. Roof deck to be 18mm WPB plywood with joints taped with Andersons HT 125 taping strip, on 25x50mm battens to provide cross ventilation gap on firings to provide fall to flat roof of 1:40. Roof joist to be to engineering specification at 400 centres. Roof void to be ventilated as shown on drawings.

Continuous (no intrusions) 120mm Kingspan Thermapitch insulation between joists and 40mm continuous under joists with vapour control layer and 13mm DUPLEX Plasterboard finished with plaster skim.

Energy Efficient Lighting: One Light fitting to every four to be energy efficient type.

FRONT ELEVATION

Loft Floor Construction: 21mm tongue and Groove chipboard flooring to engineers specification. Existing lathe and plaster ceiling to be retained. Solid block noggins provided to floor joists at mid span.

First Floor Landing: Overlay first floor landing where forming part of fire protected escape route with 3.2mm dense hardboard to provide half hour fire resistance.

Surface Water Disposal: Rainwater goods to be PVC. Half round gutters to be 112mm dia. Rainwater pipes to be 63mm dia rainwater to discharge to existing surface water drainage to be investigated on site prior to works commencing.

Multiple Timber Beams: To be bolted together with 10mm bolts and toothed connectors at 600mm centres.

Sound insulation measures: 100mm Rockwool insulation to be laid between the existing ceiling joists above the existing ceiling, the floor boarding is to be continued throughout the eaves area to fully cover the first floor ceiling.

Flashing: All flashing, Cloaks and Soakers to be code 4 lead and a minimum 150mm in height.

Waste Plumbing: Plumbing to be in accordance with BS5572.Waste pipes to be in uPVC with solvent welded joints, so as follows: Common wastes 50mm dia.

Shower wastes 40mm dia.

Basin wastes 35mm dia.

WC wastes 100mm dia.

All appliances to be fitted with deep seal traps. Rodding access to be provided at all changes in direction and at base of soil and vent. Vertical soil and vent pipes to be 100mm dia. uPVC taken up 900mm above any opening window sections within 3.0M and finished with wire balloon.

Fire Resisting doors: To provide half hour fire resistance, type FD30. Frame stops to be 25x35mm screwed and glued or to be rebated. Doors to be fitted with intumescent strips and smoke seals.

Structural Steel Work: To be clean and rust free and painted with two coats of intumescent paint to provide half hour fire resistance. Beams to be installed in one length without splices unless specified by Structural Engineer.

Windows: To be 16mm spacer bar sealed unit double glazed with internal glazing to be Pilkington 'energyKare' low emissivity glass; in a style to match existing and to clients approval.

Partition Walls (Studwork): To be 100x50 vertical studs at 400mm centres with 100x50mm head and sole plates. 100x50mm horizontal noggins at 1200mm centres vertically and staggered. 12mm Fireline plasterboard and skim finish to both sides, void infilled with sound deadening quilt. Partitions to be constructed off doubled up joists where partitions are running parallel with joists.

Electrical Work: All wiring and electrical work to be designed, installed, inspected and tested by a competent person in accordance with the requirements of BS7671, the IEE 16th edition wiring guidance and Building Regulations Part P (electrical safety). The competent person shall be registered with an electrical self certification scheme authorised by the secretary of state.

The competent person is to send the Local Authority a self certification certificate within 30 days of the electrical works completion. The client must receive both a copy of the self-certification certificate and a BS7671 Electrical installation certificate.

Party Wall Insulation: Exisitng partywall to be insulated with 80mm Kingspan Kooltherm K18 dry lining board fixed to minimum 25x47mm treated softwood timber battens or metal firings.

REAR ELEVATION

BATHROOM

HALL

BEDROOM 3

A

-

-

-

B

-

-

-

C

-

-

-

REV:

DESCRIPTION:

BY:

DATE:

STATUS:

15 14 13 12

KITCHEN

WC

CLIENT ISSUE

C:\Users\Sam\Pictures\Rooftop Rooms Logo.jpg

11

10

9

342 Baker Street, Enfield, Middlesex, EN1 3LH.

8

7

6

5

CLIENT:

KITCHEN 4

3

Client ADDRESS CITY POST CODE

2 1

ARCHITECT:

Rooftop Rooms 342 Baker Street Enfield EN1 3LH

SITE:

SIDE ELEVATION

SECTION A-A

ADDRESS CITY, POSTCODE

TITLE:

Existing Elevations & Section SCALE AT A1:

DATE:

1:50 0 Scale 1:50

0.5

1.5

3

5m

PROJECT NO:

623

DRAWN:

27/05/2023 DRAWING NO:

02

CC

CHECKED:

REVISION:

CA

-

ADMIN

INDEMNITY: 1. THE COPYRIGHT OF THIS DRAWING IS VESTED IN ROOFTOP ROOMS LTD AND IT MAY NOT BE REPRODUCED IN WHOLE OR PART OR USED FOR THE MANUFACTURE OF ANY ARTICLE WITHOUT THE EXPRESS PERMISSION OF THE COPYRIGHT HOLDERS. 2. ALL WORKMANSHIP AND MATERIALS, SERVICE INSTALLATIONS AND DEMOLITIONS TO COMPLY WITH THE LATEST RELEVANT BUILDING REGULATIONS, BRITISH STANDARDS, CODE OF PRACTICE AND IEE REGULATIONS. ALL DIMENSIONS AND LEVELS MUST BE CHECKED AND VERIFIED ON SITE PRIOR TO ORDERING, MANUFACTURING AND CONSTRUCTION. ALL DISCREPANCIES TO THE ARCHITECT'S DRAWINGS ARE TO BE BROUGHT TO THE ATTENTION OF ROOFTOP ROOMS LTD.

KITCHEN BATHROOM

NOTE: To change the glass panel above the kitchen door to fire retardant glass.

3. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH ALL RELEVANT ARCHITECT'S, SERVICE ENGINEER'S AND ROOFTOP ROOMS LTD DRAWINGS AND SPECIFICATIONS.

BEDROOM 1

Specification Ventilation Requirements: Habitable Rooms.

To be provided with ventilation openings having no less of an area than 5% of the floor area, and trickle ventilators having a total area of 8000mm².

Bathrooms.

To be provided via intermittent mechanical ventilation capable of extracting at a rate of 15 litres per second, and trickle ventilators having a total area of of 4000mm².

Staircases: Maximum rise to be 220mm and a minimum going of 220mm, pitch to be no greater than 42 degrees. Width to be 750mm between handrails. (all dimensions are provisional and are subject to verification by specialist designer on site prior to staircase manufacture commencing). Handrail at 900mm above pitch line. Minimum Vertical headroom to be no less than 2.0 metres above pitch line.

Balustrading to be provided below handrail and to all landings(height 900mm), with no gap between spindles to exceed 95mm. All tapered treads to have minimum equal goings at the centre to match does of the main flight. Minimum going is to be 50mm.

Enclosing Partitions: To be in 100x50mm studwork with 100mm Kingspan Thermawall TW55 insulation board to be laid between the studs, and 40mm Gyproc Thermaline Basic laid continuously internally with plaster skim finish.

Sloping Ceilings: 100x50mm rafters are to be provided with 60mm PIR insulation between rafters, with SF40, or other approved multi foil insulation stapled to underside of rafters and 38x25mm battens over with 13mm Duplex plasterboard with plaster skim finish.

Dormer Walls Cheeks: To be 110x50mm studwork with tile hanging (as specified on elevations), on cross battens over breathable felt on 12mm plywood sheathing externally. Dormer cheeks within 1.0m of the boundary are to have a layer of 9mm Promat Masterboard fixed between the plywood and studwork so as to provide half hour fire resistance from both sides. 100mm Kingspan Thermawall TW55 between studs.

Internally the walls are to be finished with 22mm Gyproc Thermaline Basic and plaster skim.

RECEPTION 2

HALL WC

WC

SD 8 7 6 5

NOTE: All work required on the first floor to accommodate the new staircase

UTILITY

2 1

BEDROOM 4

RECEPTION 1 STUDY

3

4

800 [2'-7"]

Smoke Alarms: Smoke alarms to be provided at ground floor hall, first and second floor landing areas, and to all habitable rooms ( heat detector to Kitchen). The Alarms are to be optical type, mains operated, connected to independent circuit, with battery back up all in accordance with BS5839 (part 6) 2004.

Alarms to be positioned 7.5M maximum from any habitable room door, and minimum 300 from walls, light fittings and not positioned over stairs. They are to be interlinked with colour coded light fittings.

Fire Precautions: Existing doors leading from stairway enclosures to habitable rooms and kitchen, to be retained. New doors to be FD30 door sets. New and existing walls forming stairway enclosures are to provide a minimum fire resistance of half an hour. The existing walls being of masonry construction and new walls being stud partitions as previously described.

Roof Lights: To be Velux type fitted in accordance with manufactures instructions, including proprietary flashing units. Roof joists doubled up all around roof lights.roof lights to be as close as match stated on drawing but may vary size on site.

Flat Roof (Cold Deck): Three Layers high performance built up felt to BS747: 1977 comprising first layer of Andersons Thermovent base layer partly bonded, second layer of Andersons HI 125 sanded underlay fully bonded, and third (cap sheet) layer of Andersons HI 350 Mineral surface sheeting fully bonded. All laid in accordance with the recommendations of CP144: Part 3 1970. Roof deck to be 18mm WPB plywood with joints taped with Andersons HT 125 taping strip, on 25x50mm battens to provide cross ventilation gap on firings to provide fall to flat roof of 1:40. Roof joist to be to engineering specification at 400 centres. Roof void to be ventilated as shown on drawings.

Continuous (no intrusions) 120mm Kingspan Thermapitch insulation between joists and 40mm continuous under joists with vapour control layer and 13mm DUPLEX Plasterboard finished with plaster skim.

BEDROOM 2

HALL BEDROOM 3

Energy Efficient Lighting: One Light fitting to every four to be energy efficient type.

Loft Floor Construction: 21mm tongue and Groove chipboard flooring to engineers specification. Existing lathe and plaster ceiling to be retained. Solid block noggins provided to floor joists at mid span.

First Floor Landing: Overlay first floor landing where forming part of fire protected escape route with 3.2mm dense hardboard to provide half hour fire resistance.

Surface Water Disposal: Rainwater goods to be PVC. Half round gutters to be 112mm dia. Rainwater pipes to be 63mm dia rainwater to discharge to existing surface water drainage to be investigated on site prior to works commencing.

Multiple Timber Beams: To be bolted together with 10mm bolts and toothed connectors at 600mm centres.

Sound insulation measures: 100mm Rockwool insulation to be laid between the existing ceiling joists above the existing ceiling, the floor boarding is to be continued throughout the eaves area to fully cover the first floor ceiling.

Flashing: All flashing, Cloaks and Soakers to be code 4 lead and a minimum 150mm in height.

Waste Plumbing: Plumbing to be in accordance with BS5572.Waste pipes to be in uPVC with solvent welded joints, so as follows: Common wastes 50mm dia.

Shower wastes 40mm dia.

Basin wastes 35mm dia.

WC wastes 100mm dia.

All appliances to be fitted with deep seal traps. Rodding access to be provided at all changes in direction and at base of soil and vent. Vertical soil and vent pipes to be 100mm dia. uPVC taken up 900mm above any opening window sections within 3.0M and finished with wire balloon.

Fire Resisting doors: To provide half hour fire resistance, type FD30. Frame stops to be 25x35mm screwed and glued or to be rebated. Doors to be fitted with intumescent strips and smoke seals.

Structural Steel Work: To be clean and rust free and painted with two coats of intumescent paint to provide half hour fire resistance. Beams to be installed in one length without splices unless specified by Structural Engineer.

Windows: To be 16mm spacer bar sealed unit double glazed with internal glazing to be Pilkington 'energyKare' low emissivity glass; in a style to match existing and to clients approval.

Partition Walls (Studwork): To be 100x50 vertical studs at 400mm centres with 100x50mm head and sole plates. 100x50mm horizontal noggins at 1200mm centres vertically and staggered. 12mm Fireline plasterboard and skim finish to both sides, void infilled with sound deadening quilt. Partitions to be constructed off doubled up joists where partitions are running parallel with joists.

Electrical Work: All wiring and electrical work to be designed, installed, inspected and tested by a competent person in accordance with the requirements of BS7671, the IEE 16th edition wiring guidance and Building Regulations Part P (electrical safety). The competent person shall be registered with an electrical self certification scheme authorised by the secretary of state.

The competent person is to send the Local Authority a self certification certificate within 30 days of the electrical works completion. The client must receive both a copy of the self-certification certificate and a BS7671 Electrical installation certificate.

Party Wall Insulation: Exisitng partywall to be insulated with 80mm Kingspan Kooltherm K18 dry lining board fixed to minimum 25x47mm treated softwood timber battens or metal firings.

WALK-IN WARDROBE SECTIONS

GROUND FLOOR PLAN A NOTE: To take down to gutter level the existing gable chimney stack.

4000 [13'-1"]

1200 [3'-11"]

2400 [7'-10"]

SHOWER ROOM

Shower 1400x800

BEDROOM 5 4900

HALL SD

4

WARDROBE

9 8 7 6 5 3

A

2

D

A

C Velux Rooflight MK06

SVP

- Soil Vent Pipe

RWP

- Rain Water Pipe

A 1900 [6'-3"] 1100 [3'-7"]

Velux Rooflight MK06

B

Velux Rooflight MK06

2200 [7'-3"]

2500

1100 [3'-7"]

1500 [4'-11"]

1300 [4'-3"]

B 4500 [14'-9"]

NOTE: Additional ducting or timber stud work around appliances may also incur additional cost. tacks in the loft, including all the relevant making good.

965 [3'-2"]

350 [1'-2"]

NOTE:Create an area to be designated as a walk-in wardrobe by constructing a partion wall. Please note this does not include any bespoke cupboards, drawers or hanging rails.

WALK - IN WARDROBE

1900

FIRST FLOOR PLAN

NOTE: All the work required on the first floor to accommodate the new staircase.

Queen With Frame 1800x2100

12 13 14

10

1000 [3'-3"]

- Smoke detector

NOTE: Additional cost maybe applicable if fittings or appliances are not of the standard type.

SD

2580 [8'-6"]

SD

SANITARY WARE: Positions to be confirmed on site by client and subject to site constraints. Appliances should not to be ordered until site dimensions have been obtained from construction team unless otherwise approved by Rooftop Rooms.

SVP

11

- Heat detector

FD30 - Half hour fire protection door

1800 [5'-11"]

2800

HD

2400 1600 [7'-10"] [5'-3"]

350 [1'-2"]

STAIRCASES: New staircase with closed string designed in accordance with Approved Doc K, risers to be a maximum 220mm and a minimum going of 220mm pitch to be no greater then 42 degrees. (All dimensions are provisional and are subject to verification by specialist stair designer on site prior to staircase manufacture commencing). Handrail at 900mm above pitch line.

Minimum Vertical headroom to be no less than 2.0. New stair to match existing newels and spindles.

1000 [3'-3"]

C 600 [2']

A

-

-

-

B

-

-

-

C

-

-

-

REV:

DESCRIPTION:

BY:

DATE:

STATUS:

315 [1']

885 [2'-11"]

CLIENT ISSUE

575 [1'-11"]

2500 [8'-2"]

C:\Users\Sam\Pictures\Rooftop Rooms Logo.jpg

1200 [3'-11"]

350 [1'-2"]

2375 [7'-9"]

1200 [3'-11"]

550 [1'-10"]

342 Baker Street, Enfield, Middlesex, EN1 3LH. CLIENT:

ADDRESS CITY POST CODE

2400 1600 [7'-10"][5'-3"] ARCHITECT:

Position of 2No. insulated access hatches to eaves storage areas to be agreed on site by project manager and clients.

Client

350 [1'-2"]

Rooftop Rooms 342 Baker Street Enfield EN1 3LH

D 3000 [9'-10"]

SITE:

ADDRESS CITY, POSTCODE

TITLE:

Proposed Plans

LOFT FLOOR PLAN

A

ROOF PLAN

A

SCALE AT A1:

DATE:

1:50 0 Scale 1:50

0.5

1.5

3

5m

PROJECT NO:

623

DRAWN:

27/05/2023 DRAWING NO:

03

CC

CHECKED:

REVISION:

CA

-

ADMIN

INDEMNITY: 1. THE COPYRIGHT OF THIS DRAWING IS VESTED IN ROOFTOP ROOMS LTD AND IT MAY NOT BE REPRODUCED IN WHOLE OR PART OR USED FOR THE MANUFACTURE OF ANY ARTICLE WITHOUT THE EXPRESS PERMISSION OF THE COPYRIGHT HOLDERS. 2. ALL WORKMANSHIP AND MATERIALS, SERVICE INSTALLATIONS AND DEMOLITIONS TO COMPLY WITH THE LATEST RELEVANT BUILDING REGULATIONS, BRITISH STANDARDS, CODE OF PRACTICE AND IEE REGULATIONS. ALL DIMENSIONS AND LEVELS MUST BE CHECKED AND VERIFIED ON SITE PRIOR TO ORDERING, MANUFACTURING AND CONSTRUCTION. ALL DISCREPANCIES TO THE ARCHITECT'S DRAWINGS ARE TO BE BROUGHT TO THE ATTENTION OF ROOFTOP ROOMS LTD.

3No. White Velux MK06 Centre Pivot with standard flashing kits.

(Not to protrude more than 150mm above tiles).

2150(H)x2400(W)mm White uPVC French Doors with fan lights The windows and doors to have white handles - Glazing to achieve a U-value of 1.6 and overall Window Energy Rating (WER) to be B and B or higher.

Wrought Iron Juliet Balcony - At an additional cost.

1250(H)x1200(W)mm White uPVC Casements Windows with white handles - Glazing to achieve a U-value of 1.6 and overall Window Energy Rating (WER) to be B and B or higher.

3. THIS DRAWING IS TO BE READ IN CONJUNCTION WITH ALL RELEVANT ARCHITECT'S, SERVICE ENGINEER'S AND ROOFTOP ROOMS LTD DRAWINGS AND SPECIFICATIONS.

Specification Ventilation Requirements: Habitable Rooms.

To be provided with ventilation openings having no less of an area than 5% of the floor area, and trickle ventilators having a total area of 8000mm².

Bathrooms.

To be provided via intermittent mechanical ventilation capable of extracting at a rate of 15 litres per second, and trickle ventilators having a total area of of 4000mm².

Staircases: Maximum rise to be 220mm and a minimum going of 220mm, pitch to be no greater than 42 degrees. Width to be 750mm between handrails. (all dimensions are provisional and are subject to verification by specialist designer on site prior to staircase manufacture commencing). Handrail at 900mm above pitch line. Minimum Vertical headroom to be no less than 2.0 metres above pitch line.

Balustrading to be provided below handrail and to all landings(height 900mm), with no gap between spindles to exceed 95mm. All tapered treads to have minimum equal goings at the centre to match does of the main flight. Minimum going is to be 50mm.

Enclosing Partitions: To be in 100x50mm studwork with 100mm Kingspan Thermawall TW55 insulation board to be laid between the studs, and 40mm Gyproc Thermaline Basic laid continuously internally with plaster skim finish.

Sloping Ceilings: 100x50mm rafters are to be provided with 60mm PIR insulation between rafters, with SF40, or other approved multi foil insulation stapled to underside of rafters and 38x25mm battens over with 13mm Duplex plasterboard with plaster skim finish.

Dormer Walls Cheeks: To be 110x50mm studwork with tile hanging (as specified on elevations), on cross battens over breathable felt on 12mm plywood sheathing externally. Dormer cheeks within 1.0m of the boundary are to have a layer of 9mm Promat Masterboard fixed between the plywood and studwork so as to provide half hour fire resistance from both sides. 100mm Kingspan Thermawall TW55 between studs.

Internally the walls are to be finished with 22mm Gyproc Thermaline Basic and plaster skim.

Extend soil and vent pipe 900mm above any window sections within 3.0M Dormer cheeks to be clad to match existing.

NOTE: To take down to gutter level the existing gable chimney stack.

Smoke Alarms: Smoke alarms to be provided at ground floor hall, first and second floor landing areas, and to all habitable rooms ( heat detector to Kitchen). The Alarms are to be optical type, mains operated, connected to independent circuit, with battery back up all in accordance with BS5839 (part 6) 2004.

Alarms to be positioned 7.5M maximum from any habitable room door, and minimum 300 from walls, light fittings and not positioned over stairs. They are to be interlinked with colour coded light fittings.

Fire Precautions: Existing doors leading from stairway enclosures to habitable rooms and kitchen, to be retained. New doors to be FD30 door sets. New and existing walls forming stairway enclosures are to provide a minimum fire resistance of half an hour. The existing walls being of masonry construction and new walls being stud partitions as previously described.

Roof Lights: To be Velux type fitted in accordance with manufactures instructions, including proprietary flashing units. Roof joists doubled up all around roof lights.roof lights to be as close as match stated on drawing but may vary size on site.

Flat Roof (Cold Deck): Three Layers high performance built up felt to BS747: 1977 comprising first layer of Andersons Thermovent base layer partly bonded, second layer of Andersons HI 125 sanded underlay fully bonded, and third (cap sheet) layer of Andersons HI 350 Mineral surface sheeting fully bonded. All laid in accordance with the recommendations of CP144: Part 3 1970. Roof deck to be 18mm WPB plywood with joints taped with Andersons HT 125 taping strip, on 25x50mm battens to provide cross ventilation gap on firings to provide fall to flat roof of 1:40. Roof joist to be to engineering specification at 400 centres. Roof void to be ventilated as shown on drawings.

Continuous (no intrusions) 120mm Kingspan Thermapitch insulation between joists and 40mm continuous under joists with vapour control layer and 13mm DUPLEX Plasterboard finished with plaster skim.

ER RM DO

6.280X 4.115 X 2.609 = 33.711 2

HIP

BLE

GA

Energy Efficient Lighting: One Light fitting to every four to be energy efficient type.

3.576 X 2.421X 10.609 = 15.307 6

Loft Floor Construction: 21mm tongue and Groove chipboard flooring to engineers specification. Existing lathe and plaster ceiling to be retained. Solid block noggins provided to floor joists at mid span.

First Floor Landing: Overlay first floor landing where forming part of fire protected escape route with 3.2mm dense hardboard to provide half hour fire resistance.

Surface Water Disposal: Rainwater goods to be PVC. Half round gutters to be 112mm dia. Rainwater pipes to be 63mm dia rainwater to discharge to existing surface water drainage to be investigated on site prior to works commencing.

Multiple Timber Beams: To be bolted together with 10mm bolts and toothed connectors at 600mm centres.

Sound insulation measures: 100mm Rockwool insulation to be laid between the existing ceiling joists above the existing ceiling, the floor boarding is to be continued throughout the eaves area to fully cover the first floor ceiling.

Flashing: All flashing, Cloaks and Soakers to be code 4 lead and a minimum 150mm in height.

Waste Plumbing: Plumbing to be in accordance with BS5572.Waste pipes to be in uPVC with solvent welded joints, so as follows: Common wastes 50mm dia.

Shower wastes 40mm dia.

Basin wastes 35mm dia.

WC wastes 100mm dia.

All appliances to be fitted with deep seal traps. Rodding access to be provided at all changes in direction and at base of soil and vent. Vertical soil and vent pipes to be 100mm dia. uPVC taken up 900mm above any opening window sections within 3.0M and finished with wire balloon.

Fire Resisting doors: To provide half hour fire resistance, type FD30. Frame stops to be 25x35mm screwed and glued or to be rebated. Doors to be fitted with intumescent strips and smoke seals.

Structural Steel Work: To be clean and rust free and painted with two coats of intumescent paint to provide half hour fire resistance. Beams to be installed in one length without splices unless specified by Structural Engineer.

Windows: To be 16mm spacer bar sealed unit double glazed with internal glazing to be Pilkington 'energyKare' low emissivity glass; in a style to match existing and to clients approval.

Partition Walls (Studwork): To be 100x50 vertical studs at 400mm centres with 100x50mm head and sole plates. 100x50mm horizontal noggins at 1200mm centres vertically and staggered. 12mm Fireline plasterboard and skim finish to both sides, void infilled with sound deadening quilt. Partitions to be constructed off doubled up joists where partitions are running parallel with joists.

Electrical Work: All wiring and electrical work to be designed, installed, inspected and tested by a competent person in accordance with the requirements of BS7671, the IEE 16th edition wiring guidance and Building Regulations Part P (electrical safety). The competent person shall be registered with an electrical self certification scheme authorised by the secretary of state.

The competent person is to send the Local Authority a self certification certificate within 30 days of the electrical works completion. The client must receive both a copy of the self-certification certificate and a BS7671 Electrical installation certificate.

Party Wall Insulation: Exisitng partywall to be insulated with 80mm Kingspan Kooltherm K18 dry lining board fixed to minimum 25x47mm treated softwood timber battens or metal firings.

TOTAL VOLUME 33.711 + 15.307 = 49.018 49.018 < 50 OK

FRONT ELEVATION

REAR ELEVATION

1000H)x1000(W)mm Triple Glazed Non Opening Obscured White uPVC Casements Windows with white handles.

Glazing to achieve a U-value of 1.6 and overall Window Energy Rating (WER) to be B and B or higher. (At an additional cost).

New side gable to be rendered to match existing.

Provide non maintenance White uPVC fascia and soffit to dormer.

TO STRIP FRNOT SECTION OF THE ROOF: Remove existing roof coverings Stack the existing tiles ready for re use.

Supply and fit Ty-vek breathable felt.

Supply and fit the new 19 x 38 tannalised roof battens.

Supply and fit the new code 4 lead valleys and step flashing's.

Then re lay the existing tiles replacing any broken ones.

Dormer roof to be covered with three layer high performance roofing felt.

Provide half round non maintenance black uPVC gutter and down pipes to dormer.

Face of dormer is not to extend past the external face of the existing rear wall and must be a minimum of 260mm up the roof slope.

SB 1.0

SHOWER ROOM

1180 [3'-10"]

HALL

2400 [7'-10"]

To reduce sound transmission, 100mm acoustic insulation will be places between new floor joists above existing ceiling.

WALK-IN WARDROBE

1000 [3'-3"]

1000 [3'-3"]

260 [10"]

14 13 12 11 10

9 7

HALL

-

-

-

B

-

-

-

C

-

-

-

REV:

DESCRIPTION:

BY:

DATE:

STATUS:

8

BATHROOM

A

CLIENT ISSUE

BEDROOM 3

6 5 4 3 2 1

15 14 13 12

KITCHEN

WC

C:\Users\Sam\Pictures\Rooftop Rooms Logo.jpg

342 Baker Street, Enfield, Middlesex, EN1 3LH.

11

CLIENT:

10

9

8

7

6

5

ADDRESS CITY POST CODE

KITCHEN 4

3

Client

ARCHITECT:

Rooftop Rooms 342 Baker Street Enfield EN1 3LH

2 1 SITE:

ADDRESS CITY, POSTCODE

TITLE:

Proposed Elevations & Section

SIDE ELEVATION

SECTION A-A

SCALE AT A1:

DATE:

1:50 0 Scale 1:50

0.5

1.5

3

5m

PROJECT NO:

623

DRAWN:

27/05/2023 DRAWING NO:

04

CC

CHECKED:

REVISION:

CA

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