Skip to content
TRI-BUILT 300HT High Temperature Water & Ice Protection, 36 in. x 66 ft. Roll, White
Regular price $165.54Orders start at $399 — combine any items to reach the minimum. Learn more
TRI-BUILT 300HT High Temperature Water & Ice Protection, 36 in. x 66 ft. Roll, White
This TRI-BUILT 300HT high temperature water and ice protection is a 36 in. x 66 ft. white underlayment roll covering 198 sq ft, sold per roll. It is UL Classified, meets ASTM D1970 and carries ICC-ES ESR #2206 with Miami-Dade approval. Use it under metal and other steep-slope roofing where high-temperature underlayment is specified.
Key Features:
- High temperature rated: 300HT formulation designed for high-temperature underlayment applications.
- Water and ice protection: Provides water and ice protection beneath the roof covering.
- 198 sq ft per roll: One 36 in. x 66 ft. roll covers 198 sq ft.
- Code approvals: UL Classified; ICC-ES ESR #2206; Miami-Dade County Product Control Approved.
- ASTM D1970: Meets ASTM D1970 for steep-slope underlayment.
- Class A fire rating: ASTM E108/UL 790 Class A Fire Resistance as listed.
- White surface: White top surface as specified for this item.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | TRI-BUILT |
| Manufacturer model | 359050 |
| Sell unit | 1 roll, 36 in. x 66 ft. |
| Product line | 300HT High Temperature Water & Ice Protection |
| Color | White |
| Dimensions | 36 in. x 66 ft. |
| Coverage per unit | 198 sq ft |
| Fire rating / wind rating / warranty | ASTM E108/UL 790 Class A Fire Resistance |
| Approvals | UL Classified; ICC-ES ESR #2206; Florida Building Code Approved Product #6785; Miami-Dade County Product Control Approved; Meets ASTM D1970; 2016 California Green Building Standards, Title 24; 2015, 2012, and 2008 ICC 700 National Green Building Standard |
| Weight | 52 lb per roll |
| Intended use | High-temperature steep-slope underlayment |
Coverage & How Much You Need:
One roll measures 36 in. x 66 ft. and covers 198 sq ft. Plan laps per the manufacturer's instructions and local code; laps reduce net coverage, so add rolls accordingly for valleys, eaves and rakes.
Fit and Compatibility:
Designed as a high-temperature underlayment for use under metal roofing and other steep-slope systems where HT underlayment is required. It is installed under the roof covering; drip edge, starter and ridge components are ordered separately. Confirm compatibility with the roof covering manufacturer's requirements.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 36 in. x 66 ft. white roll of TRI-BUILT 300HT underlayment, weighing 52 lb.
Q: How much does one roll cover?
A: 198 sq ft before laps; allow extra for overlaps, valleys and eave runs.
Q: What approvals does it carry?
A: UL Classified, ICC-ES ESR #2206, Miami-Dade County Product Control Approved, Florida Building Code Product #6785, and it meets ASTM D1970 with ASTM E108/UL 790 Class A fire resistance.
Q: Where should I use it?
A: Under high-temperature roof systems such as metal roofing, per the manufacturer's instructions and local code.
Q: What is the roll size and color?
A: 36 in. wide x 66 ft. long with a white surface.
Q: Is it self-adhered?
A: The sources do not state the application method; follow the manufacturer's installation instructions.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose an HT underlayment like 300HT when the roof covering can reach temperatures that degrade standard asphalt-based underlayments, particularly under metal roofing. Check the ESR and local code for fastening or adhesion requirements in your wind zone, and run a full course at eaves and valleys for ice dam protection. With 198 sq ft net per roll, budget roughly one roll per square plus lap allowance.
Underlayment surfaces can be slippery, especially when wet or dusty; wear appropriate footwear and fall protection when working on the roof.
Order the TRI-BUILT 300HT 36 in. x 66 ft. high temperature water and ice protection roll for your next roof.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
