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

A:  Hello Joe, No. The material is high strength woven synthetic roofing underlayment coated with a layer of UV stabilized polyolefin. On the Printed Side. It will not provide you the same protection as it would if used as intended. Hope this Helped answer your question.

A:  I wouldn't instructions indicate letters up

A:  TRI-FLEX may be used with mechanically attached tiles, but it is not likely to hold the tiles that have been cemented down in place on a sloped roof.

A:  Hello CampFireCooker, Simple answer would be NO. This stuff is very tough & would make a great barrier underlayment with your said waterproof tape an all, however by itself I do not believe this would perform as you want. I hope this Helped.

A:  Grace SYN 15 is designed as a premium water-shedding material to be used in place of roofing felt. It is not designed as waterproofing for this type of application.

A:  TRI-FLEX is a premium water-shedding material that is much stronger than the asphalt saturated felt that is traditionally used as an underlayment in roofing. For waterproofing protection, including sealing around fastener holes, we recommend using Grace Ice & Water Shield.

A:  Hello TM, good question. Grace underlayment should not be used at slopes less than 2:12, provided the slope is also acceptable to the primary roof covering. On slopes of less than 3:12, Grace membrane should be half-lapped a full 24 inches over the underlying course, shingle style. Hope this Helped.

A:  TRI-FLEX may be applied on roofs with slope of 2:12 or more. On roofs with slope of 2:12 to 3:12, the product should be overlapped 24”. (ie, “half-lapped”)

A:  I would not recommend it. On low pitch roofs, I would strongly suggest Grace Water and Ice. This is pricey but, it virtually eliminates the roof ever leaking.

A:  This material itself would be good for a couple of years for sure but I wouldn't suggest it as the panels beneath would suffer if not totally sealed up. Wind and rain will blow under it at some point under normal positioning and securing of the material to the sheeting.

A:  TRI-FLEX is extremely durable. TRI-FLEX should be installed with cap nails or cap staples to maximize exposure. TRI-FLEX installed with capped nails or cap staples may be left exposed up to 6 months before the final roof covering is installed.

A:  6 months

A:  Grace underlayments are designed for use on sloped roof decks, and should be covered by a roof covering material as soon as possible. (shingles, metal roofing, etc). It is not designed for permanent exposure, or use over the shingles or other roof covering. The product will provide a water-shedding type protection over small cracks/gaps, such as the gaps between plywood on the roof deck.

A:  Hello Weston, Yes this would make a fine Underlayment for your Metal Roof. I did the exact same thing on a shed I Built, this stuff is amazing! I also sealed all the seams with Tyvek Tape. Go Forth & Build! I hope this Helped.

A:  Yes, It is highly recommended under metal roofs. There are not many choices for underlayments for metal roofs. Do not use regular tar paper / felt. It will not hold up Also do not use regular roofing nails under a metal roof. Ringed Plastic cap nails are required to be used with synthetic roof underlayments..

A:  Yes, TRI-FLEX may be used under metal roofing

A:  Yes, but the paper is a waste of money. No need to double up if the paper is not already in place. This material is much better.

A:  Yes, two layers of TRI-FLEX may be used. TRI-FLEX is compatible with traditional roofing felt.

A:  Yes, it does!!