This document contains drawings and notes for a proposed side and rear extension at an address in Whitchurch, Cardiff. The drawings show the existing and proposed elevations of the front, rear and side of the property. Notes provide details on materials and construction methods to match the existing building, as well as requirements for windows, doors, insulation and ventilation. Key aspects that must be addressed include using materials that match the existing brickwork, render and roof tiles, installing lintels and cavity trays properly, using safety glass where required, meeting energy efficiency standards for windows and doors, and adding trickle vents.

1. 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/06 of 9
Job Title
Existing and Proposed Elevations
CHF
EXT
2
2
CHF
Existing Front Elevation Existing Rear Elevation Existing Side Elevation
Proposed Front Elevation Proposed Rear Elevation Proposed Side Elevation
EXT - Extract Fan 15l/s and
must be light switch connected
and fitted with a 15 minute
overrun.
FAF - Fan Assisted Flue.
CHF - Cooker Hood Fan 30
litres per second ventilation.
NOTES
WINDOWS TO MATCH EXISTING
RAINWATER PIPES & GUTTERING
TO MATCH EXISTING
DOORS TO MATCH EXISTING
BRICKWORK TO MATCH EXISTING
RENDER TO MATCH EXISTING
ROOF TILES TO MATCH EXISTING
LintelsLintelsLintelsLintels
All lintels in external cavity walls to be supplied from Birtle, Catnic or I.G. in accordance with
the manufacturers schedules and insulated with expanded polystyrene. Damp proof
protection should be provided over all unprotected openings in external walls either by:- (a)
Combined d.p.c, lintel with corrosion protectionto B.S.5977: Part 2 and which has a profile to
NHBC Clause D6(b). (b) Where a suitable combined lintel profile is not provided, cavity trays
should be installed over the lintel. The lintels shall be insulated and have either no base plate
continuous from outer leaf or shall be a perforated baseplate with effective conductivity not
exceeding 30W/mK as the Robust Details.The Cavity tray or combined lintel should have
stopends with weep holes spaced at maximum 450mm centres, minimum 2 no. per opening
where fair faced masonry is supported by lintels.
GlazingGlazingGlazingGlazing
To be in accordance with Part N of Building Regulations 1992. Low Level glazing below
800mm high to be safety glass to BS.6206.Low level glazing between finished floor and
1500mm above that level in a door or in a side panel and surrounding areas 300mm past door
frame to be safety glass to BS.6206.
Windows/DoorsWindows/DoorsWindows/DoorsWindows/Doors
· Any PVC-U or timber framed window
(installed vertically) or fully glazed door should
have a Window Energy Rating (WER) of band C
or better.
· Alternatively, the window should have a U-
Value of 1.6W/m²K or better.
· All doors should have a U-Value of
1.8W/m²K or better.
· Doors with > 50% of their internal face area
glazed should have an overall U-Value of
1.8W/m²K.
Example: Double glazed Pilkington Glass -
energikare classic, 4:16:4 K-Glass to achieve U-
value of 1.5W/m²K or similar approved.
All proposed external doors and windows are to be
fitted with two trickle vents at 425mm - Titon TV90
Hi Lift Ventilator & HF Canopy - For use on UPVC,
aluminium or timber windows, or similar approved.
1 Existing garage to be carefully taken down
and carted away.
Where applicable
BMac Design & Developments
07766 317970 / 02920 310595
3 Bishops Road, Whitchurch, Cardiff. CF14 1LT
Scaled dimensions may be used for approximation.
Ensure only figured dimensions are used for
construction. All dimensions to be checked on site.
2 Velux roof window sizes to be agreed with
client and installed as per manufacturers
recommendations.