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HAL Industries 30# Asphalt-Saturated Organic Felt Underlayment, 3 ft. x 72 ft. Roll, Black
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HAL Industries 30# Asphalt-Saturated Organic Felt Underlayment, 3 ft. x 72 ft. Roll, Black
This is a 30# (No. 30) perforated asphalt-saturated organic felt underlayment from HAL Industries, supplied as one 3 ft. x 72 ft. roll in black. It installs beneath shingles, shakes or tiles as a secondary protective layer between the roof deck and the finished roofing. Pair it with your chosen shingle system to guard against wind-blown moisture.
Key Features:
- Breathable protection: Manufactured to transmit moisture vapor so the roof deck can breathe while keeping bulk water from shingle leaks out.
- Helps prevent rot: Vapor-permeable design helps prevent rotting of wood decks that can be caused by non-permeable products.
- Lays flat: Pre-conditioned to help the felt lay flat and remain stable during and after installation.
- Tear resistant: Heavy-weight reinforcements greatly increase tensile strength and prevent tearing during installation.
- Meets ASTM D226: Manufactured to ASTM D226 for organic felt underlayment.
- Recycled content: Biodegradable and made in North America from locally sourced materials with pre- and post-consumer recycled wood and paper, garnering LEED points where applicable.
- Proven track record: HAL Felt has been a choice underlayment for home protection since 1974 with decades of field performance.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | HAL Industries |
| Sell unit | 1 roll, 3 ft. x 72 ft. |
| Product line | HAL Felt underlayment |
| Material | Asphalt-saturated organic felt |
| Color / finish | Black |
| Available sizes | 3 ft. x 72 ft. (30#/No. 15 perforated listed on this page) |
| Dimensions | 3 ft. x 72 ft. per roll |
| Coverage per unit | Approximately 216 sq. ft. per roll before laps |
| Standard | ASTM D226 |
| Perforation | Perforated for moisture vapor transmission |
| Intended use | Secondary water-protection layer beneath shingles, shakes or tiles |
Coverage & How Much You Need:
One 3 ft. x 72 ft. roll covers roughly 216 sq. ft. of deck laid flat. Subtract for head laps and end laps per your shingle manufacturer's application instructions to size the number of rolls.
Fit and Compatibility:
Designed for use beneath asphalt shingles, wood shakes and tile as a secondary layer over wood roof decks. It is compatible with standard steep-slope roofing attachment methods and is not a substitute for ice-and-water membrane in code-required locations.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One roll of 30# perforated black felt underlayment measuring 3 ft. x 72 ft., meeting ASTM D226.
Q: How much area does a roll cover?
A: A roll lays out about 216 sq. ft.; plan on less coverage after head laps and end laps required by your roofing manufacturer.
Q: Why choose perforated felt?
A: Perforations allow moisture vapor to pass through so the deck can breathe while the felt still blocks bulk water from shingle leaks.
Q: Will it lay flat during installation?
A: Yes, it is pre-conditioned to lay flat and stay stable, and heavy-weight reinforcements increase tensile strength to resist tearing.
Q: Can it contribute to LEED points?
A: It is made with pre-consumer and post-consumer recycled wood and paper content and may garner LEED points where applicable.
Q: Where should it be used?
A: Beneath shingles, shakes or tiles as a secondary protective layer between the roof deck and the finished roofing.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
No. 30 felt is the heavier, more tear-resistant step up from No. 15 and is a dependable choice under tile and in re-roofs where the felt will see foot traffic and weather exposure before cover. Snap horizontal chalk lines and maintain the lap schedule your shingle maker specifies; roll the felt flat before shingling. For low-slope or ice-dam-prone eaves, supplement with a self-adhered membrane rather than relying on felt alone.
Wet or dusty felt is slippery and tear-prone - wear fall protection and non-slip footwear, and follow the included safety data sheet when handling.
Order HAL Industries 30# felt underlayment today for a time-tested secondary layer under your next roof.
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