TRI-BUILT 39 in. x 66 ft. Self-Adhering HT Tile Underlayment Roll

This is a TRI-BUILT 39 in. x 66 ft. self-adhering high-temperature (HT) tile underlayment roll providing 198 sq ft of coverage, about 2 squares per roll. Each order is one roll weighing approximately 71 lb. It installs beneath tile roofing as a waterproofing layer and pairs with compatible tile roof systems.

Key Features:

• Self-adhering membrane: The S/A (self-adhering) design bonds directly to the deck without fasteners through the membrane.
• High-temperature build: The HT (high-temperature) formulation is intended for use under tile roofing where deck temperatures run high.
• 198 sq ft coverage: One 39 in. x 66 ft. roll covers 198 sq ft, approximately 2 squares.
• UL Classified: The product is UL Classified R16814.
• Miami-Dade approved: Miami-Dade County Approved under NOA 15-1123.06.
• Code-listed: Carries Florida Building Code FL16048-R4 and ICC-ES ESR-3492F listings.

Specifications Table:

Coverage & How Much You Need:

One roll measures 39 in. x 66 ft. and covers 198 sq ft, or about 2 squares. Divide total roof area by 198 sq ft and add extra for laps and detailing to size the job.

Fit and Compatibility:

Designed as a tile underlayment for use beneath tile roof systems per the manufacturer’s installation instructions. Verify deck type and primer requirements with the manufacturer’s instructions before installation.

Frequently Asked Questions (FAQ):

Q: How much does one roll cover?
A: One 39 in. x 66 ft. roll covers 198 sq ft, approximately 2 squares.

Q: What does HT mean on this underlayment?
A: HT stands for high-temperature, the formulation intended for use under tile roofing where heat exposure is greater.

Q: Does it need fasteners?
A: It is a self-adhering (S/A) membrane; follow the manufacturer’s installation instructions for laps and priming.

Q: Is it code approved?
A: Yes, it carries UL Classification R16814, Miami-Dade NOA 15-1123.06, Florida Building Code FL16048-R4 and ICC-ES ESR-3492F.

Q: How heavy is a roll?
A: Each roll weighs about 71 lb.

Expert Verdict Reviewed by the SuperArbor Pro Desk

For tile roofs, a high-temperature self-adhering underlayment like this protects the deck during exposure and after tile installation. Order rolls by dividing roof area by the 198 sq ft coverage and adding waste for laps, valleys and eave detailing. Confirm substrate priming and lap requirements with the manufacturer’s instructions and local code.

Follow the manufacturer’s installation instructions and local building code; use fall protection and proper roof-work precautions during installation.

Order TRI-BUILT 39 in. x 66 ft. self-adhering HT tile underlayment for your next tile roof project.