Dave, the Vaproshield representative came by the lot to sell us on this green building wrap, GreenShield.
It’s a weather resistive vapour- and air-permeable membrane. The construction of WallShield (triple layer spunbond polypropylene) allows moisture to continue to filter through to exterior of the building during and after construction and occupancy. Water vapour transmission is 212 perms.
To prepare the window openings for window installation, we used 15” strips of Greenshield membrane to layer with the red plastic upper corners and water-shedding sill pans with their clever glued-on sill pan corners. (VaproSillSaver components are made from reprocessed residual vinyl trim material from old windows.) Any water that somehow gets into the window cavity past all the flashings and building wrap and waterproof tape will be drained into the plastic sill pans to the outside.
The system is considerably more expensive than “tar paper” or “Tyvek”. Our 32 windows and 3000 sq. ft of exterior wall is costing us about $3200 to outfit in this wrap. I’ll report on the wrapping of the house later.
{ 3 comments… read them below or add one }
Nice work on the blog updates, looking good as usual!
How did you resolve your window issue?
Thanks. Window issue not resolved yet. It’s in Westeck’s hands.
Thanks for the continuing updates. Appreciated.