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TRI-BUILT Max Premium Synthetic Felt Underlayment, 48 in. x 250 ft., 10 Square Roll
Regular price $180.64Orders start at $399 — combine any items to reach the minimum. Learn more
TRI-BUILT Max Premium Synthetic Felt Underlayment, 48 in. x 250 ft., 10 Square Roll
This TRI-BUILT Max Premium underlayment is a synthetic felt roof underlayment supplied as one 48 in. x 250 ft roll covering 10 squares (1,000 sq ft). It installs beneath asphalt shingles, tile, metal and other sloped roof coverings as the secondary water barrier. One roll per order.
Key Features:
- Synthetic strength: Premium synthetic construction offers high tear resistance compared with traditional asphalt-saturated felt.
- 10 square roll: Each roll covers 10 squares, about 1,000 sq ft of roof deck.
- 48 in. wide: 48 in. width covers more deck per course than 36 in. felt.
- 250 ft long: 250 ft roll length means fewer laps and faster installation.
- Deck protection: Serves as the secondary water-shedding layer under the roof covering.
- Manageable roll: Roll weight about 41.52 lb for two-person handling.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | TRI-BUILT |
| Manufacturer model | 651172 |
| Sell unit | 1 roll, 48 in. x 250 ft (10 squares) |
| Product line | TRI-BUILT Max Premium |
| Profile / style | Synthetic felt roof underlayment |
| Dimensions | 48 in. x 250 ft |
| Coverage per unit | 10 squares (approx. 1,000 sq ft) per roll |
| Material | Synthetic felt |
| Weight | 41.52 lb per roll |
| Intended use | Roof underlayment beneath sloped roof coverings |
| QXO category | Underlayment |
Coverage & How Much You Need:
One roll measures 48 in. x 250 ft and covers 10 squares (1,000 sq ft) before laps. Plan horizontal course laps per the manufacturer's instructions and local code, which reduce net coverage, so order slightly more than the calculated deck area.
Fit and Compatibility:
Use under asphalt shingles, tile, metal and other sloped roof coverings; pair with eave drip edge and ice-and-water membrane at eaves and valleys where required. Fasteners and laps per the manufacturer's instructions.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 48 in. x 250 ft roll of TRI-BUILT Max Premium synthetic felt underlayment, covering 10 squares.
Q: How many rolls for my roof?
A: One roll covers 1,000 sq ft before laps; add a waste allowance for course laps and valleys.
Q: How does it compare to asphalt felt?
A: It is a premium synthetic felt, generally lighter and more tear-resistant than asphalt-saturated felt.
Q: How is it installed?
A: Roll it horizontally up the deck with laps per the manufacturer's instructions and local code, fastening as directed.
Q: How much does a roll weigh?
A: Approximately 41.52 lb per roll.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Synthetic underlayment is the modern default for shingle roofs: a 10-square roll replaces many rolls of organic felt and withstands UV and traffic exposure during the install window. Keep courses flat and lapped consistently, and use self-adhered membrane at eaves, valleys and penetrations where code or climate requires it. Always follow the covering manufacturer's underlayment requirements for warranty compliance.
Synthetic underlayment can be slippery, especially when wet or on slopes; wear appropriate footwear and fall protection while installing.
Order the TRI-BUILT Max Premium 48 in. x 250 ft synthetic felt underlayment roll for your next roof.
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