Rated 4.7 out of 5 by 87
Rated 2.0 out of 5.0 by Unsatisfied PROBLEMS WITH PRODUCT. Product shrinks when sun hits it or hot. It lifts out of the valleys.
I bought this because of the claim that is could stay uncovered up to six months. The listed problems occurred after a few days of alternating rainy and hot periods.
1st It didn't feel stable under foot as it was being laid. A problem when 20 feet up. It slides on the roof held only by stretching nail holes. I worry about leaks at nail holes because of stretching when you walk.
2nd When the product heated up it got real tight.
-Enough so that is revealed seams in the rolls that pulled apart.
3rd This was the worst part. When it tightened up from the sun. It lifted out of the valleys. This required the product being cut and new felt being placed before shingling.
Overall. I will not use this product again.
August 19, 2016
Rated 5.0 out of 5.0 by Jeff Best investment I could have made
After tearing off my old roofing and seeing how the felt paper was just crumbly apart I was so glad I bought the Grace Triflex underlayment . It is strong & lightweight & I won't be worried about it deteriating
July 16, 2016
Rated 5.0 out of 5.0 by DIY Great Under lament
Works really well easy to install, excellent durability, much better than felt. A little slippery when wet, only complaint I wish it had more lines for shingle alignment.
July 19, 2016
Rated 5.0 out of 5.0 by chazzmany easy to use, light weight
This material is thin and light weight. Very easy to use. It doesn't stretch or crease easily. It's as easy to cut as paper. It seems to be as waterproof as advertised and it won't absorb water and wrinkle and buckle like tar paper. It's easy for a one man operation to cut a piece to the entire length of the roof, tack one end down and stretch it out across the whole roof without a massively heavy roll sliding down the roof. Lots of material on a roll.
June 25, 2016
Rated 5.0 out of 5.0 by Nonsheep Great Underlayment for a Metal Roof
Bought this to cover up 30 lb Felt that was beat up by our Montana Winds in just 1 weeks time exposure, After getting the tar paper back down & secured I decided to spend the money & place this product up over the tar paper on my Shed/Out Building. It took about a week to arrive having it shipped to home. This stuff is OUTSTANDING! Wow! 1st off it doesn't tear very easily... 2nd it has a tackiness that is a comfort while working 12-15 feet up with no harnesses or Nets! LoL... It went on very easy & had marked lines for lining up & securing Properly to the roof deck. Used 1 inch roof nails from Home Depot to tack it down. It has held up Magnificently to the Montana Winds & a Few Micro Burst Storms Too! Sheds the water so Well & Seals So well I almost want to use it Solely as the roofing material... Just saying I believe the 6 months exposure would be an easy Stretch for this material!
September 26, 2015
Rated 5.0 out of 5.0 by jfm30204 Great product!
Easier to install than felt. Tougher and more durable than felt. Lasts longer than felt - up to months before cover. Cheaper than felt. So why does anyone use felt? Well pleased.
May 10, 2016
Rated 4.0 out of 5.0 by KrishnaDasa Excellent as temporary roof covering.
Excellent as temporary roof covering. Has held up very well for more than 18 months while preparing to re-shingle.
May 7, 2016
Rated 5.0 out of 5.0 by Buildingmyown Great product
Is an excellent underlayment I would use again if I were to build again
April 6, 2016