Ventilated ridge to provide 5mm continuous opening
Roof tiles to match existing on battens and
counter battens, breathable roofing
membrane fixed over 22mm butt jointed
sarking boards (3mm air gaps between boards)
fixed to timber roof trusses.
10mm continuous
ventilation gap at eaves
50x50 timber
wrapped in DPC
to close cavity.
Ceiling finished with 12.5mm
plasterboard and skim coat
plaster
Cavity perpend vents at 1200mm
centres
300mm mineral wool
insulation between and over
ceiling ties
Roof finished to match existing. Tiles on battens
and counter battens, on roofing felt, on OSB
sarking board fixed to trusses
Cavity perpend vents at 1200mm
centres
Ceiling finished with 12.5mm
plasterboard and skim coat
plaster.
300mm mineral wool
insulation between and over
ceiling ties
Pre-manufactured roof trusses
to tie in with existing pitched
roof
Ceiling finished with 12.5mm
plasterboard and skim coat
plaster.
Cavity perpend vents at 1200mm
centres
20mm render to match existing
Structural beams to
engineers specification
20mm render to match existing
100mm concrete block
100mm concrete block
50mm vented Cavity
50mm vented Cavity
9mm sheathing board
9mm sheathing board
100x50mm timber studs with
full fill Kingspan insulation
Kingspan insulated plasterboard
100x50mm timber studs with
full fill Kingspan insulation
Kingspan insulated plasterboard
22mm Chipboard flooring
Timber frame wall ties at 900mm
horizontal and 450mm vertical
centres
140mm Kingspan on floating
floor joists
Existing external wall now
forming an internal
surface lined with
32.5mm insulated
plasterboard to prevent
thermal bridging
Ground bearing floor slab to
engineers specification
300mm mineral wool
insulation between and over
ceiling ties.
2290
2 Layers 12.5mm plasterboard
Timber frame wall ties at 900mm
horizontal and 450mm vertical
centres.
Cavity perpend vents at 1200mm
centres
1200 Gauge DPM linked to wall DPC
Sand blinding
Minimum 150mm well compacted
hardcore
Cavity perpend vents at 1200mm
centres
Facing brick base
course to match
existing
Existing blocked over
solum vents to be
ducted through to
external wall.
Condition of existing roof joists to be fully inspected
when exposed. If found to be in poor condition, or if
timber size and centres differ from stated specification,
then the structural engineer and Platinum Architectural
Design Ltd should be consulted for further instruction.
SECTION B-B THROUGH KITCHEN EXTENSION 1:20
2460
22mm Chipboard flooring on battens so that
proposed floor level ties in with existing floor
level. Provide 100mm mineral wool insulation
between floor joists as sound reducing
measure.
SECTION C-C THROUGH KITCHEN EXTENSION 1:20
19mm render
100mm Block
50mm Cavity
100mm Block
45mm insulated plasterboard
Existing timber firing pieces
Existing softwood roofing boards
New flat roof finish to match existing
by specialist roofing contractor.
Existing 150x50 Joists @400 centres
Existing ventilated solum
Existing flat roof over dining room
Timber runner bolted to external wall of house
to engineers specification in order to support
new flat roof joists.
Existing flat roof joists. 130x50
softwood joists at 520mm
centres
New flat roof joists over
extended garage in accordance
with engineers detail.
Joist hangers to engineers specification.
Structural steel work to engineers
specification and details.
2120
Garage wall removed, existing roof
joists to be supported during
removal with temporary supports.
New support via beam to engineers
details.
SECTION D-D THROUGH EN-SUITE EXTENSION 1:20
Extended garage floor fixed to
existing using dowel bars in
accordance with engineers details.
Existing ground floor joists
Proposed ground bearing garage
floor to engineers specification
and details.
1200 Gauge DPM
Sand blinding layer
Well compacted hardcore.
Existing ground bearing garage floor.
Platinum Architectural Design Ltd
16 South Quarry Avenue
Gorebridge
EH23 4GU
Platinum Architectural Design Ltd
SECTION F-F THROUGH GARAGE 1:20
PROPOSED SECTIONS
SAMPLE PROJECT 2
Drawing number:
Revision:
00003
E