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RoofWizards




Joined: 16 Nov 2001
Posts: 269
PostPosted: Sat Oct 31, 2009 7:25 pm    Post subject: sarnafil Reply with quote
I have a question for everyone!
I am dealing with a sarnafil roof up in Oshkosh, WI. What I am seeing is at the welded seam. Splitting of the material is occurring. You can see the reinforcement threads holding together but the thermoplactic product has failed right at the welded seam. Has anyone else come across this problem.
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donl

Site Admin


Joined: 09 Sep 2001
Posts: 340
Location: Northern California
PostPosted: Sat Oct 31, 2009 7:59 pm    Post subject: Reply with quote
I have seen this with various membranes at the seam. Usually, this is caused by the outer tip of the auto welder dragging along the edge of the seam. This leaves an groove/indentation that eventually fails.

Check for this indentation.
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RooferJ




Joined: 14 Nov 2006
Posts: 1132
PostPosted: Sat Oct 31, 2009 9:42 pm    Post subject: Reply with quote
How old is it ? it may be under warranty.
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RoofWizards




Joined: 16 Nov 2001
Posts: 269
PostPosted: Mon Nov 02, 2009 1:27 am    Post subject: Reply with quote
The roof is 20 years and their is no sign of burning from the welder. It like the material was newer their. Yes I know it was. I just never seen this happen before. Thanks for the Input tho
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LAMetalRoofs




Joined: 28 Jul 2007
Posts: 175
Location: No. Attleboro, MA
PostPosted: Mon Nov 02, 2009 6:55 am    Post subject: Reply with quote
can you post pictures? preferably high-res? if not here, you can use google's picasa. would be very interesting to see them. how thick is the roof? 60 or 80 mil?
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