Oregon State University's (OSU) Native American Longhouse receives a SIP roof. A clever roofing approach prevents condensation to build up in the panel. And keeps the water out. Check it out.
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Once the SIPs are installed, SIGA Majcoat - the permeable roof underlayment - is layed of top of the panel.
Overlaps are sealed with SIGA Wigluv 60.
Overlaps are sealed with SIGA Wigluv 60.
1x3 furring strips, nailed ontop of the SIGA Majcoat, will create a vented gap.
To prevent water from entering the SIPs through the nail holes, SIGA Nail Sealing Tape II is installed under the strip.
A layer of plywood on top serves as the sheating to mount the shingles onto.
Covering the roof is easy and quick.
The sandwich in close up.
The detail on paper
So what's the benefit of this roof?
- no shingle nails penetrate the SIP panel
- no water enters the SIP panel (thanks to SIGA Majcoat which is drvining rain proof)
- no condensation builds up (the diffusion open Majcoat let's moisture dry out)
No vapor will enter the assembly from the inside. The interior SIP joints are sealed with SIGA Rissan 60
Want to know more?
Don't hesitate to contact your local SIGA application advisor.
Or shoot us an email at info@sigacover.com
- We're happy to help.
Don't hesitate to contact your local SIGA application advisor.
Or shoot us an email at info@sigacover.com
- We're happy to help.
