Questions and Answers for Grace Tri-Flex 48 in. x 250 ft. Synthetic Roll Roofing Underlayment

A:  TRI-FLEX can be used under mechanically fastened tiles in sloped roof applications with greater than 2:12 slope as an alternative to roofing felt. TRI-FLEX is very durable, and will shed water from wind driven rain, or other materials. Grace also manufactures Ice & Water Shield, which is a self-adhered membrane which seals around roofing fasteners used to secure tiles.

A:  No, but rubber soles do grip rather well to it when installing. Much safer and stronger than paper/felt underlayment.

A:  No it is not

A:  It is a synthetic material that needs to be cut. It will not tear.

A:  Hello david, This Material is high strength woven synthetic roofing underlayment coated with a layer of UV stabilized polyolefin. Hope this answers your question.

A:  Plastic round cap roofing nail.

A:  Hello Danny, The manufacturer recommends using capped nails. These are the nails you'll often see that have a plastic washer just under the head. I've included a link to some possible options below. I hope this helps. Cheers, Chris Capped Nails: http://www.homedepot.com/p/compare/?errorURL=ProductAttributeErrorView&langId=-1&storeId=10051&catalogId=10053&prodComp_0=205450474&prodComp_1=100111688&prodComp_2=100198483&prodComp_3=205450263&N=5yc1vZc28d&keyword=roofing+nails

A:  I use the annular ring nails with large orange plastic washer. Roofing nails in a pinch if it isn't going to be exposed long .... and roofers often just staple it down if they are going to roof over it the same day. It's very tear resistant.

A:  Possibly, but sheeting would be more suitable. Not self-healing, but is a good strong material for roofing.

A:  I would use a more traditional vapor barrier. This is water proof but breathable. Think of it as Tyvek for your roof. No it isn't self healing. You would need to use the Grace Ice & Water Shield.

A:  It would definitely function as a vapor barrier. But as much as I love this product .... seem like tar paper might be a better way to go, or a product designed specifically for what you are doing. This stuff is not self healing .....think a very, very tear resistant plastic tarp, but thinner and flatter. Seems like the thickness of tar paper might provide a bit more cushion, and void filling capability, might be a bit more quiet in the long run. But this synthetic underlayment would definitely be a better vapor barrier if that's your major concern.

A:  No.

A:  No, this product goes under shingles.

A:  Yes. Using this over your existing shingle roof before installing a new metal roof is an acceptable practice. It will not void your metal manufacturers warranty. I install commercial and residential metal roofing. This or any synthetic underlayment will provide the abrasion protection the bottom of the metal needs.

A:  Not sure on the temp. But I don't think it would get that hot on a roof under the shingles.

A:  I wouldn't think so. Their literature doesn't mention a maximum temperature.

A:  gonna do metal not shingles, metal gets hotter, that's why i was wondering.

A:  I have installed this product on hundreds of roofs with metal shingles and have never had a problem.

A:  Nailing, Look up some youtube videos on how to secure this material.

A:  This needs to be nailed. The peal and stick is the Grace Ice & Water Shield.

A:  No peeling just line up straight and nail down

A:  Yes, this product needs to be mechanically attached.