Double stud passive house wall assembly. Window prep using peel and stick exterior air barrier.

1. Dalebright Passive House
Burnaby BC
Window Prep
& Install Sequence
August 2020
www.lanefab.com

2. • 2x6 structural framing
• RO 1” wider than heel size
• RO 2.5” taller than heel size
• Peel and Stick air barrier and
moisture barrier (vapour
open)
• 12” P&S at sill with half the
backing left on (so it can lap
over the membrane that wil
go below)

3. • ½” plywood box at window
opening
• 1’3” deep
• 1x12 bevel siding as sloped
sub sill

4. • Blueskin the subsill, and lap
onto the peel and stick,
extending min. 3” past the
RO onto the wall

5. • Tape over the pinhole corner
of the Blueskin
• Use vapour open tape
(Siga Wigluv or similar)

6. • Apply P&S membrane to
window jambs (at least 12”
into the window box)
• Must be vapour-open peel
and stick membrane:
VP100, Siga Majrex SA, or
Solitex Adhero

7. • Tape the pinhole at the
upper corner

8. • Apply P&S membrane to
window head (and wrap at
least 12” into the window
box)
• Assure positive lap over the
lower membranes
• Back-frame the 2x4 inner
wall (non structural)

9. • Install window 5” inset from
plywood sheathing
• Use strap anchors facing out,
or screw through the wood
window frame
• Rod and caulk the interior
joint between the window
frame and P&S membranes

10. • Use vapour open tape on the
outside of the window,
spanning from window fram
to P&S membrane
• Cover the strap anchors

11. • Use vapour open tape on the
outside of the window,
spanning from window fram
to P&S membrane
• Cover the strap anchors
• With E-92 windows, the sill
taping will be inset from the
head/jamb tape (this is ok
because the outside tape
isn’t an air barrier)

12. • Apply P&S membrane to the
rest of the wall, starting at
the bottom to provide a
positive lap at every joint
• Install 1-1/2” mineral wool
and 2x4 blocking against the
exterior window jamb and
head (to reduce thermal
briding at the frame edge)

13. • Install prefab window sills
and wood trim
• Install ventilated rainscreen
and cladding

14. • Install prefab window sills
and wood trim.
• With E-92 windows the
window sill tucks into the
recess in the front of the
wooden window frame
• Install ventilated rainscreen
and cladding

15. Dalebright Passive House
Burnaby BC
August 2020
www.lanefab.com