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TRI-BUILT Roof-Proof Hybrid Underlayment Roll, 4.5 Squares, 450 sq ft
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TRI-BUILT Roof-Proof Hybrid Underlayment Roll, 4.5 Squares, 450 sq ft
TRI-BUILT Roof-Proof Hybrid Underlayment is a hybrid roofing underlayment sold as one roll covering 450 sq ft, or 4.5 squares. It meets ASTM D4869, D226 and D1970 and is UL approved. Use it as a full-coverage underlayment beneath shingle and other approved roof covering systems.
Key Features:
- 450 sq ft roll: One roll covers 450 square feet, equal to 4.5 roofing squares.
- Hybrid construction: Hybrid design combines the working properties of synthetic and traditional underlayments.
- ASTM tested: Applicable standards include ASTM D4869, D226 and D1970.
- UL approved: Listed as UL approved in the product standards.
- Full roof coverage: Provides 4.5 squares of coverage per roll for efficient full-deck installs.
- Manageable roll weight: The roll weighs about 46 lb for easier handling on the roof.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | TRI-BUILT |
| Manufacturer model | TB-6500-45 |
| Sell unit | 1 roll, 450 sq ft (4.5 squares) |
| Product line | Roof-Proof Hybrid |
| Product type | Hybrid roof underlayment |
| Dimensions | 450 sq ft per roll (4.5 squares) |
| Coverage per unit | 450 sq ft / 4.5 squares |
| Weight | 46 lb per roll |
| Approvals | ASTM D4869, ASTM D226, ASTM D1970; UL approved |
Coverage & How Much You Need:
One roll covers 450 sq ft, or 4.5 squares, of roof deck before lap deductions. Divide the total roof area in squares by 4.5 and add for laps, valleys and waste to size the job.
Fit and Compatibility:
Designed for use under shingle and other roof covering systems for which the applicable ASTM standard applies. Underlayment fasteners, cap nails and drip edge are sold separately.
Frequently Asked Questions (FAQ):
Q: How many squares does one roll cover?
A: Each roll covers 4.5 squares, or 450 square feet, before lap deductions.
Q: What standards does it meet?
A: It is listed to ASTM D4869, D226 and D1970 and is UL approved.
Q: How many rolls do I need for a 30-square roof?
A: Roughly 7 rolls (30 divided by 4.5), plus extra for laps and waste; plan overlap per the manufacturer's instructions.
Q: How heavy is a roll?
A: About 46 lb per roll.
Q: How is it sold?
A: One roll per sell unit.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
This 4.5-square roll format reduces seams compared with smaller rolls, speeding full-deck coverage. Because the hybrid construction serves the ASTM D1970 and D226 roles, verify which listed standard your project requires and lap per the manufacturer's instructions with cap fasteners rated for underlayment. In high-wind or ice-belt applications, check whether your local code calls for self-adhered underlayment at eaves, rakes and valleys and add that product separately.
Underlayment surfaces are slippery when wet or dusty; use roof brackets or walkboards and fall protection when installing.
Get TRI-BUILT Roof-Proof Hybrid Underlayment 4.5-square rolls for your next roof.
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