Post on 18-Aug-2018
Cru
mlin Cott
ages R
etr
ofit
Sinead Wilmott D14124530
HOME
QUALITY
RATING71% EXCELLENT
65%
76%
78%
61%
78%
Floor22mm SW Floorboards5mm Bitumen 75mm Concrete Slab
Existing Wall Construc-tion18mm Pebbledash fi nish215mm Cast in situ concrete
18mm Sand Cement Plaster
Retrofi t Panel40mm Mineral Wool
15mm OSB Board
200mm timber frame made
up of 2 x cross layers with
Knauf Ecosse mineral wool
insulation
15mm DWF Wood fi bre
board
25mm Ventilated Cavity
15mm Fibre Cement Board
with 3mm plaster fi nish
WindowsAura plus triple glazed
Aluclad windows taped
to existing plaster internally
for airtightness
Prefabricated Retrofi t Panels Hung From
Existing Concrete Walls
40mm mineral wool inner layer acts as a cushion
against existing surface
15mm OSB inner layer acting as VCL (airtightness
layer in new construction) with taped joints
200mm stud with mineral wool insulation
cross layered
15mm DWF board, highly diffusible wood fi bre board
acts as wind layer
25mm ventilated layer
Fibre cement board with plaster fi nish to match
existing / Fibre cement cladding to new construction
Key FindingsThermal Bridging and DEAP Rating Penalties
More suited to new build
Crumlin Scored highly in Location due to excellent
amenities & Services
The only service not available was the local shop
Crumlin Community Development Project established
in 2005 - Active community participation
Allotments in Nearby Pearse College - Combined with
Retrofi t Planters
Community Grocery Oppurtunity in
Conjunction with Local Authority Support
Retrofi t Roof2.5mm Skim Plaster
12.5mm Plasterboard
100mm Rafters
100mm mineral wool
15mm OSB Board
200mm Mineral Wool timber
frame in 2 crossed layers
15mm DWF wood fi bre
board
Sarking Felt
25mm Battens
25mm Counter battens
Slate tiles
New Aluminium fasia, soffi t
and rainwater gutter
Below DPC Level200mm XPS insulation to
existing foundation
Plaster fi nish above ground
level
New Floor Construction75mm Concrete Screed
150mm Reinforced
Concrete Slab
250mm XPS Insulation
DPM
50mm Sand Blinding
150mm Hardcore
Ground Ring beam on
Lean mix concrete
New Wall Construction12.5mmm Plasterboard
25mm Service Cavity
60mm PIR Insulation
15mm OSB Board
240mm Mineral Wool timber
frame in 2 crossed layers
15mm DWF wood fi bre
board
25mm Ventilated Cavity
15mm Fibre Cement Board
Cladding
New Roof Construction15mm OSB Board
300mmMineral Wool timber
frame in 2 crossed layers
15mm DWF wood
fi bre board
Sarking Felt
25mm Battens
25mm Counter battens
Slate tiles Finish
WindowsAura plus triple glazed
Aluclad windows taped
to existing plaster internally
for airtightnessDoorsAura plus triple glazed
Aluclad patio doors taped to
OSB internally for airtight-
ness
Existing Ground Floor
Retrofit Construction
Retrofi t Combined Eaves/ WindowRetrofi t Combined Floor /Window
Building Integrated Solar Electric Roof TileHigh power output 52Wp per tile,
less than 8 m2 per kWp
Houses
Allotments
Crumlin Shopping
Centre
Aereco EHT 969
Humidity Air Sensitive
Intake
GFL 0
12 m²Kitchen / Diner
8 m²Study / Guest Bed
2 m²WC
16 m²Living Room
5 m²Bathroom
11 m²Bedroom
6 m²Kitchen
14 m²Dining
11 m²Room
8 m²Study / Guest Bed
Extension Construction
Existing First Floor
Issues
DOE Space Requirements
Part L compliance fabric upgrade, building services
and renewables
Part B compliance new fi re alarm
Part M compliance widening entrance door
Minimal Intervention
External insulation of existing house with prefabricated
timber panels
Planter for each household
New Porch < 2 sq. m
New 2 Storey Rear Extension < 12 sq. m at each storey
Retain Existing Floor
Provides
DOE compliant rooms
An extra fl exible living space at ground fl oor / ensuite
bedroom at ground fl oor
An extra bedspace on fi rst fl oor
A2 Energy Effi cient Home
Ventilation Whole house extract with controlled individual room supply
Heating Thermia Atec Air to Water Heat Pump –
1 utility bill, reduced service charges
Renewable Integrated Solar Pv roof tiles
Aereco V4A Central
Extract
Aereco BXC Air Extract
Ventilation
Thermia Atec 200L Hot
Water tank with control
panel, electric heater
cartridge, circulation
pump and 3 way valve
Retrofit Ground Floor
Retrofit First FloorRear View
Front View
A2 A2A2
41 kWh/m2/yr41 kWh/m2/yr
Exis
ting G
round F
loor
Gro
und F
loor
Exte
nsio
nG
round F
loor
Porc
h
U Values
Hygrothermal Analysis
Retrofit First Floor
Retrofit Ground Floor
Building Services
46 kWh/m2/yr
En
d O
f Te
rra
ce
Mid
Te
rra
ce
Re
gu
lar
Mid
Te
rra
ce
Ga
ble
Retrofi t Roof - No Interstitial Condensation or Surface Moisture Reported
Retrofi t Wall- No Interstitial Condensation or Surface Moisture Reported
Retrofi t Floor- Interstitial Condensation & Surface Moisture Reported -
External Insulation carried to foundation level, extension to rear, porch to front,
fRsi calculation - 0.89 Complies
New Roof - No Interstitial Condensation or Surface Moisture Reported
New Wall - No Interstitial Condensation or Surface Moisture Reported
New Floor- Interstitial Condensation -
fRsi calculation carried out - 0.835 Complies
Lin
ear
Therm
al B
ridge
fRsi Calc
ula
tion
Base line Floor Retrofi t Floor
Y Factor 0.031
Y Factor 0.513Y Factor 0.012
New Wall Corner
Pro Clima Teson Vana tape suitable for timber
frame construction - Tape OSB & DWF board
at joints, tape windows / doors to OSB board in
new construction.
Pro Clima tape - Tape windows & doors to wet
plaster fi nish in existing building
Air TightnessLeave existing ceiling in place
Install Intello Plus membrane to ceiling
taped at joints and junction with
existing wet plaster
Wind TightnessWind tightness achieved by vapour
difuse DWF mineral fi bre board to ex-
ternal of retrofi t panel, taped at joints
and junctions
Air TightnessExisting wet plaster fi nish to be
consolidated
Skirting boards to be removed,
junction taped and skirting replaced.
Air TightnessExisting wet plaster fi nish to be
consolidated
Skirting boards to be removed,
fl oor junction taped and skirting re-
placed.
Ventilation Central Extract unit in attic
extracts air through roof
Air TightnessOSB board, taped at junctions and
Windows / Doors acts as air tightness
layer
Wind TightnessWind tightness achieved by vapour
difuse DWF mineral fi bre board to
external of retrofi t panel, taped at
joints
Air TightnessConcrete fl oor acts as airtightness
layer, tape fl oor to OSB / Door
junction for continious seal
Skirting board installed after