Cut the membrane into 10 15 ft 3 5 m lengths and reroll loosely.
Zip system grace ht roof.
Gcp invented fully adhered roofing underlayments more than 35 years ago.
Roof top guard is just as vapor impermeable as any other polyethylene based underlayment like ice water shield and most other synthetic roofing underlayments like triflex 30 etc so vapor migration is not a relevant issue.
Made with advanced acrylic adhesion specially formulated for application over a wide temperature range zip system tapes are pressure activated to create a powerful bond that gets stronger over time.
Grace ice and water shield fully adhered smooth surface roofing underlayment provides best in class roof leak protection against wind driven rain and ice dams.
It delivers all the advantages of grace ice water shield with thermal stability to 260f and 120 day exposure.
It delivers all the advantages of grace ice and water shield roofing underlayment with thermal stability metal and tile roofs require.
It s lower thickness makes it lighter and easier to apply than heavy granular surfaced materials.
Peel back 1 2 ft 300 600 mm of release liner align the membrane and continue to peel the release liner from the membrane.
Grace ice and water shield ht fully adhered smooth surface roofing underlayment is specifically designed for high temperature applications such as metal and tile roofs.
Grace ice water shield ht is a version of the flagship product that is formulated to be more thermally stable and ideal for use under metal roofing or in high temperature roofing assemblies.
Press the membrane in place with heavy hand pressure.
Thermal resistance to 260f.
Apply roof covering material at temperatures of 40 f 5 c or higher.
As joe lstiburek always emphasizes the most important thing to remember when installing rigid foam above roof sheathing is to have an excellent air barrier at the level of the lower sheathing.
Zip system flashing tapes are not your average industrial tapes.
Ft 3 8 out of 5 stars 11.
Grace ice water shield ht 1 4 out of 5 stars 6 200 83 200.
Grace select is a code compliant performance alternative to granular underlayments.
Wr grace put bituthene on the market over 40 years ago for heavy duty foundation plaza deck and bridge waterproofing.
Under the roofing is a backup layer the roofing underlayment that is at least nominally waterproof.
Grace ice water shield ht self adhered underlayment is specifically designed to meet the challenges inherent in metal roof assemblies.