SIGA Wigluv tape width for OSB sheating

Jonny_NW | Posted in Green Products and Materials on September 23, 2019 12:44pm

I’m working on building a small workshop and will be air sealing the 1/2″ OSB sheathing using SIGA Wigluv tape.

I plan on using the 100 mm wide tape at the sill between the concrete slab an sheathing and 60 mm wide for the OSB seams.

What about the corners and OSB to top plate junction? Would the 60 mm be sufficient or should I go with the 100 mm?

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Brian Pontolilo | Sep 24, 2019 09:14am | #1
Hi Jon,

I haven't used the Siga tape before, so I can't comment, but I'm sure many GBA members have. So, I'm giving your post a bump.
Jon_R | Sep 24, 2019 11:30am | #2
Given the cost of good tape, it would be useful to see a generic answer to how wide tape needs to be. My guess is that it depends mostly on the bond strength (ie, substrate).
Rob Myers | Sep 25, 2019 08:01pm | #3
Hi Jon,
I used the 60 mm tape for sealing plywood seams on a house and a shop. It was more than wide enough (more overlap is of course better than less, but this stuff is seriously sticky). I think that the choice of width probably depends more on how well the joints align etc. If the gaps are reasonable then there is probably no reason to go to the wider tape.

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