Donaghadee, Co Down
This house was built in the North Down town of Donaghadee along the coast at the start of 2016.
The timber frame aspect of the build took approximately 3 months to construct and in order to achieve the passive standards required we used Dupont TYVEK membranes and associated Airtightness products.
We also installed a passive standard heat recovery system which is up to 85% efficient and uses the highest grade F7 pollen & allergen filters (inlet and outlet). Great care and attention was taken when installing the airtight system to ensure an airtightness value of 0.52.5 n50 Air Changes per Hour (1/h) was achieved which is well below the passive standard value of 0.6.
The clients opted for triple glazed PVC future proof windows which achieves a U-value of 0.8.
Build Up and U Values: -
External Walls (U Value 0.1):
- 220mm Stud filled with 220m PIR
- TYVEK airguard reflective membrane
- 50mm PIR
- Counter batten
- 12.5mm Plasterboard
Sloped Ceilings (U Value 0.1)
- 225mm PIR between rafters