Underlayment

My new construction has 30lb roofing felt installed but now changing from shingles to a metal roof. Titanium UDL 30 will be used as the underlayment. Should the existing felt be removed prior to installing the UDL or may the UDL be installed directly over the tar paper? The roof will be unvented over cathedral ceilings.		Neal Young 8/28/2013	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18741/find/
I would check with Titanium as final authority as they know their product the best but I feel it's fine to leave the felt in place.		Todd Miller Isaiah Industries, Inc. 8/28/2013	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18742/find/
Should be fine. The woven polys are very durable and should be fine. I would, as Todd recommends, check with Titanium but I don't foresee any problems.		Eric Novotny An informed customer is the Best Customer! 8/28/2013	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18743/find/
Thanks Eric and Todd! I checked with the manufacture and Yes, UDL 30 may be installed directly over the felt.		Guest User 8/28/2013	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18744/find/
Great. Post up some update pictures. We love seeing the updates from posters on their projects. Good luck and keep us posted. Eric		Eric Novotny An informed customer is the Best Customer! 8/29/2013	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18745/find/

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.