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Fascia Board
Rafters/trimmers to be doubled
up around velux rooflights
Wall Plate
Ridge
Ridge
Rafters/trimmers to be doubled
up around velux rooflights
Wall Plate
Wall Plate
Fascia Board
Fascia Board
Proposed Side & Rear Extension at 4 Ty-Newydd,
Whitchurch, Cardiff. CF14 1NN
Drawn by Date
M Ferreira 02/2011
Checked by Date
B McCarthy 02/2011
1:100 on A3
Drawing Name
Drawing Scale
Drawing Number: Status Revision
BR/09 of 9
Job Title
Proposed Roof Plan and Details
BMac Design & Developments
07766 317970 / 02920 310595
3 Bishops Road, Whitchurch, Cardiff. CF14 1LT
RoofRoofRoofRoof
Where slopeabutswall/roof,stepped code 4lead flashing and soakers
or cover flashing andsoakers or cover flashingwillbeprovided, allas
recommended by roof tilemanufacturer, Fascia/soffit to match existing,
wind bracing andbinders to therooftobeprovided and fixed all in
accordancewithmanufacturer's specificationsand to B.S.5268Part
31985. Galvanised nails to beused throughout.Roof to be in
accordancewithStructural Engineersdetails andto consist of
100x50mm treatedS.W. wallplate, securely vertically fixedbygalvanised
mild steel. 1000x30x5mm thick restraint straps at 2000mm max, centres,
200x50mm C16 gradedS.W. treated roof joist at 350mm c/c
manufactured inaccordance with B.S.5268: Part3.AndStructural
Engineersdetails.Anybracing to be inaccordance with the Building
Regulations. NOTES - GENERAL Cavity sealedat eaves. Windows/door
reveals andcills to havewindowformer/cavity closer by supplier. Door
reveals to be filled with polystyrene slab 75mm x 150mm wide. Thermal
conductivity max. 0.037 w/mk. Exposedstructuraltimbertobe
preservative treated as per Building Regulations1990 Approved
Document to support Schedule 7, Section 1.6b. Cavity is to be
maintained for at least 225mm belowD.P.C level.
Mono pitch roof ventilation to be breathable roofing felt Permo® forte
should be laid in accordance with manufacturers installation details
and BBA/IAB Certificates.
Proposed Roof Plan
Sloping Roof Detail
Celotex XR4165 165mm Insulationbetween ceiling joiststo achieve U
valueof0.18W/m2K.Maintain 50mm air gap above.On existing rafters
counter battonwillberequiredtothe underside in addition to theabove,
Tape the joints of the Celotex with Celotex InsulationTape and sealthe
perimeter edges with mastic to rovide a VCL, Nailor screwplasterboard
or otherliningthroughthe insulation to the rafter, ensuring thatthe
length of thefasteners isadequate to secure theplasterboard lining.
Tiling Speedline LR (Low Resistance)
breathable membrane or similar approved
Rafters with 50mm
dair gap above
ddinsulation
Celotex XR4165
9.5mm plasterboard
Scaled dimensions may be used for approximation.
Ensure only figured dimensions are used for
construction. All dimensions to be checked on site.

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BR09 Proposed Roof Plan and Details

  • 1. Fascia Board Rafters/trimmers to be doubled up around velux rooflights Wall Plate Ridge Ridge Rafters/trimmers to be doubled up around velux rooflights Wall Plate Wall Plate Fascia Board Fascia Board Proposed Side & Rear Extension at 4 Ty-Newydd, Whitchurch, Cardiff. CF14 1NN Drawn by Date M Ferreira 02/2011 Checked by Date B McCarthy 02/2011 1:100 on A3 Drawing Name Drawing Scale Drawing Number: Status Revision BR/09 of 9 Job Title Proposed Roof Plan and Details BMac Design & Developments 07766 317970 / 02920 310595 3 Bishops Road, Whitchurch, Cardiff. CF14 1LT RoofRoofRoofRoof Where slopeabutswall/roof,stepped code 4lead flashing and soakers or cover flashing andsoakers or cover flashingwillbeprovided, allas recommended by roof tilemanufacturer, Fascia/soffit to match existing, wind bracing andbinders to therooftobeprovided and fixed all in accordancewithmanufacturer's specificationsand to B.S.5268Part 31985. Galvanised nails to beused throughout.Roof to be in accordancewithStructural Engineersdetails andto consist of 100x50mm treatedS.W. wallplate, securely vertically fixedbygalvanised mild steel. 1000x30x5mm thick restraint straps at 2000mm max, centres, 200x50mm C16 gradedS.W. treated roof joist at 350mm c/c manufactured inaccordance with B.S.5268: Part3.AndStructural Engineersdetails.Anybracing to be inaccordance with the Building Regulations. NOTES - GENERAL Cavity sealedat eaves. Windows/door reveals andcills to havewindowformer/cavity closer by supplier. Door reveals to be filled with polystyrene slab 75mm x 150mm wide. Thermal conductivity max. 0.037 w/mk. Exposedstructuraltimbertobe preservative treated as per Building Regulations1990 Approved Document to support Schedule 7, Section 1.6b. Cavity is to be maintained for at least 225mm belowD.P.C level. Mono pitch roof ventilation to be breathable roofing felt Permo® forte should be laid in accordance with manufacturers installation details and BBA/IAB Certificates. Proposed Roof Plan Sloping Roof Detail Celotex XR4165 165mm Insulationbetween ceiling joiststo achieve U valueof0.18W/m2K.Maintain 50mm air gap above.On existing rafters counter battonwillberequiredtothe underside in addition to theabove, Tape the joints of the Celotex with Celotex InsulationTape and sealthe perimeter edges with mastic to rovide a VCL, Nailor screwplasterboard or otherliningthroughthe insulation to the rafter, ensuring thatthe length of thefasteners isadequate to secure theplasterboard lining. Tiling Speedline LR (Low Resistance) breathable membrane or similar approved Rafters with 50mm dair gap above ddinsulation Celotex XR4165 9.5mm plasterboard Scaled dimensions may be used for approximation. Ensure only figured dimensions are used for construction. All dimensions to be checked on site.