|Location:||Cobble Hill, British Columbia|
|Building Type:||Single Family Residential|
|Project Phase:||Under Construction|
|Year of Construction:||2019|
|Gross Floor Area (m2):||372|
This is my first attempt at reaching the passive house standard with hopefully many more to come!
I chose a QuadLock ICF wall system from footings to trusses. The wall is an R43 construction with 7" exterior EPS, 8″ Concrete core (below grade and 6" above grade), and 3″ interior EPS. The wall is continuous for two stories with the floor made of 18" web trusses suspended on a 2″x12″ leger secured with Simpson ICFVL ties.
For the roof trusses I used a 4/12 pitch with a 19″ raised heel (energy truss). This will allow for R82 of lose fill cellulose. I incorporated a 4' overhang in the trusses to provide sufficient shading and eliminate water infiltration from above. The air vapor barrier for the ceiling is made with Siga Myrex membrane, a one way vapor permeable product.
Windows and doors are all passive certified from EuroLine.
HRV is the Zehnder Q600 with a 1500w pre and post heater.
The main challenge we had to overcome was being new to ICF we failed to adequately stage all of the 20 tons of rebar for the job which added time and cost to the project to sort through and handle the steel.