Peel-and-stick or Tyvek WRB?
Here is my proposed exterior wall assembly:
Vapour barrier (for the building inspector)
2×4 studs at 12″ o.c with 3.5″ Rockwool batting
5/8″ Densglass Drywall sheathing
WRB <—– PLEASE NOTE THIS ONE 2″ Rockwool boards cement board open cladding I was commenting on other threads but thought I’d start a new one. I need the advice of the GBA members. Question: Considering cost, performance and application, Should I use a SA membrane or Tape the seams of the sheathing and Staple on a WRB? Self adhering membranes I’ve looked at: Vaproshield $1.2/sqft (no primer needed) Blueskin VP100 $1/sqft Delta Vent SA $1/sqft non-adhering membranes: Tyvek $0.13/sqft Tyvek Tape $0.12/linear ft So you can see we’re talking about a around a 9x of cost for the Self Adhered models. Yes the SA membranes are supposed to ‘save’ on labour philosophically, but there are differences, like size of the sheets and experience of the workers that come into play. Taping seams and stapling 9′ high sheets is quite simple vs vertically applied 5′ sheets of SA, cutting, rolling, getting all the seams right, etc. Does anyone have any experience with both and have any comments? Jamie
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