Taping rigid foam seams

Old 10-20-15, 07:28 PM
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Taping rigid foam seams

What is the best product to use for sealing the seams between sheets of rigid foam insulation? The local big box store only had Tyvek tape, but I'm not sure if this will stick properly to the foam board. Thanks
Old 10-20-15, 08:14 PM
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Tuck Tape Cantech - Construction / Construction Tape. THere is literally nothing that it wont stick to, and it holds good, too good sometimes.

Not sure if this brand is unique to Canada or not, but I am sure there is a similar product in the U.S. Since I have never used Tyvek tape I cant tell you if it is the same thing, but it appears to be.
Old 10-20-15, 08:27 PM
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I've used both Tuck Tape Tuck Tape | Red Sheathing Housewrap Tape 60 Millimetres Wide And 50 Metres Long | Home Depot Canada and Owens Jointsealr. Both are designed to work with foam, and both adhere very well.

Problem is, long term performance is kind of a crap shoot. If I'm not using tongue and groove foamboard, I put a good bead of foam board adhesive on the edge when butting the next sheet, and then tape the seam too.
Old 10-21-15, 03:48 AM
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If your foam product is made by Dow they recommend Dow Weatheremate tape.

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