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Manufacturer Varies by Location 15# Asphalt Felt Underlayment Roll, 4 Squares - Standard and UL Listed
Regular price $30.12Orders start at $399 — combine any items to reach the minimum. Learn more
Manufacturer Varies by Location 15# Asphalt Felt Underlayment Roll, 4 Squares - Standard and UL Listed
This 15# asphalt-saturated felt underlayment adds a moisture barrier against wind-driven rain between your shingles and the roof deck. Each roll covers 4 squares (400 sq ft). Choose the standard roll or the UL-listed version to suit your project requirements.
Key Features:
- Moisture barrier: Asphalt saturation improves waterproofing and helps prevent wind-driven rain from infiltrating under shingles.
- Deck protection: Adds an extra layer of protection between shingles and the roof deck.
- Lays flat: Heavy-duty construction lays flat to help minimize wrinkling during installation.
- Permeable design: 15# felt has a permeability that allows the deck assembly to breathe.
- Two versions: Available as a standard 15# roll or a 15# UL-listed roll, each covering 4 squares.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Manufacturer Varies by Location |
| Sell unit | 1 roll, 4 squares |
| Product line | Felt 15# |
| Available sizes | 15# 4 Square/Roll (standard) and 15# UL 4 Square/Roll (UL-listed) |
| Material | Asphalt-saturated felt (recycled paper and asphalt) |
| Coverage per unit | 4 squares (400 sq ft) per roll |
| Finish / texture | Asphalt-saturated felt sheet |
| Intended use | Residential roofing underlayment beneath shingles |
Coverage & How Much You Need:
One roll covers 4 squares, or 400 square feet of roof deck, before laps. Size your order by roof area and account for overlap at laps, so plan on slightly more roll footage than the net roof area.
Fit and Compatibility:
Installed under asphalt shingles over the roof deck (deck not included). Works with standard shingle systems; the UL-listed version is available when specifications call for a UL-classified felt.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One roll of 15# felt underlayment covering 4 squares; choose the standard or UL-listed version.
Q: How much does one roll cover?
A: Each roll covers 4 squares, or 400 square feet, before lap allowances.
Q: What is the felt made of?
A: 15# roof felt consists of recycled paper saturated with asphalt.
Q: Why use felt underlayment?
A: It provides an extra moisture barrier that helps keep wind-driven rain and other water from reaching the roof deck.
Q: Will it lie flat during installation?
A: Yes, the heavy-duty design lays flat to help minimize wrinkling.
Q: What is the difference between the two options?
A: One is a standard 15# felt roll and the other is a 15# UL-listed roll; both cover 4 squares.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
For standard steep-slope shingle work, 15# felt remains a familiar, economical underlayment choice; step up to the UL-listed roll when job specs require it. Roll out horizontally from the eave with proper lap on each course, and fasten adequately to prevent wind lift before shingling. Order rolls by roof area, adding extra for laps and waste.
Felt underlayment can be slippery, especially when wet or dusty, so wear appropriate footwear and use fall protection while installing.
Add a 15# felt underlayment roll to your cart for dependable moisture protection under your shingles.
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