If you would like to reply to this thread, please log in. If you do not have an Ask the Experts forum user account, create one here.
If you would like to reply to this thread, please log in. If you do not have an Ask the Experts forum user account, create one here.
My roofing supplier recommends they install a butyl sealant while rolling my snap lock panels. My roof pitch is 2:12.
Another well known roofing supplier tells me the sealant is not necessary.
In talking to a roofer who has been installing standing seam in a mountain resort town for 25+ years, he doesn't use it. He believes the peel and stick underlayment is good enough. He reports no problems. He recommended I follow the roofing suppliers recommendations....though, at the same time, points out that once I have the panels snapped down, the stickiness of the sealant won't allow the panels to be lifted.
That makes me nervous, being I have never installed this style of roofing before. It seems the sealant would make it even less forgiving of any mistakes I might make, requiring that I lift a panel for some reason.
If he can get away without using the sealant in an area that gets 3,4, and more feet of snow, why wouldn't I be fine in my area that rarely sees 6-8"? Maybe the difference for him is a higher roof pitch. He did not mention that though.
I am using Sharkskin Ultra SA as my underlayment.
Thoughts?
4/4/2023
Or copy this URL: https://www.metalroofing.com/spirit/comment/26197/find/As I recall, you also said you have a pretty long rafter length -- 34'. Yes, the low pitch is a factor. I have sold materials for plenty of snap lock jobs at 2:12 and with fairly long panels. That said, sealant in the female lock is a belt and suspenders approach and not a bad thing. If the contractor wants to do it, I would not turn them down. You are taking liability onto yourself if you refuse it.
Isaiah Industries, Inc.
4/4/2023
Or copy this URL: https://www.metalroofing.com/spirit/comment/26198/find/