TriBuilt Synthetic Underlayment

TRI-BUILT Synthetic Roofing Underlayment is the water-resistant layer that goes down over the deck, under the shingles. It replaces old felt with a synthetic sheet that is stronger, lighter, and easier to walk than traditional #15 felt. Each roll covers 5 squares (42 in x 143 ft).

• △︎Up to 12x stronger than #15 felt — a tougher, tear-resistant layer over the roof deck.
• ●︎Water-resistant barrier — adds a second line of defense beneath the shingles.
• ⌂︎Slip-resistant surface — gives crews safer footing during installation.
• ☉︎90-day UV exposure — allows time on the deck before the roof covering goes on.
• ✓︎Mold-inert material — will not feed mold the way organic felt can.