Air Leak Tape Siding Osb

Protecto wrap 6 in.

Air leak tape siding osb.

Air leaks at recessed can lights often lead to winter ice dams. To create a more airtight ceiling construct rigid foam boxes that are air sealed with tape and canned spray foam. I did an airtightness test on two irish passive house s lately using silicone clamped between the osb and the stud. Even recessed cans that are rated ic and airtight are known to leak.

Matt risinger risinger homes in austin tx. Juneau s failing sips had osb rot near panel seams. Martin s article says that it s best to. Learn how to use siga tape to air seal your house.

The joints weren t taped the osb wasn t painted and we got air tightness tests of 0 38ac 50kpa and 0 45ac 50kpa. But to reach that goal of 1ach50 i ve decided to take a page from the passivehouse playbook and tape my exterior sheathing seams. The boxes should be sealed to the drywall before loose fill insulation is installed. In reading martin holiday s tape test article from march 2013 fine homebuilding i thought that siga wigluv was the clear winner as the best tape for osb sheathing seams.

Window and door sealing tape is great for use around doors windows and nailed fins and flanges. Adheres to vinyl plywood osb foam metal aluminum and masonry. To limit air leakage builders use tapes to seal the seams of a variety of membranes and buildings products including housewrap polyethylene osb and plywood. Tapes are also used to seal duct seams to seal leaks around penetrations through air barriers for example to seal around plumbing vents and to seal sheet goods to a variety.

So i don t think there s any need to paint osb to air seal it its airtight enough already. However in 2001 a cluster of sip failures in juneau alaska highlighted problems with sip sealing methods. Forms a permanent waterproofing air vapor seal around doors and windows that prevents air and moisture leaks. With taped seams the zip system sheathing is both an air barrier and a water resistive barrier wrb.