Residential Shingle Roofs
Mandatory secondary barrier for shingle roofing systems to protect against wind-driven rain.
Asphalt Felt Roll
Production Line
Bitumen Membranes
Traditional Organic Asphalt Saturated Roofing Felt
Time-tested organic asphalt saturated roofing felt. The essential secondary moisture barrier for residential pitched roofs, specifically designed for use under asphalt shingles.
Asphalt Saturated FeltASTM D226 / D4869Secondary Barrier0.5mm / 0.8mmRoof UnderlaymentOEM Available
Standard
ASTM D226 (15#/30#), ASTM D4869 (15#/30#)
Thickness
0.5mm, 0.8mm
Roll Size
1m (36 inch)
Send thickness, surface material, quantity, and destination port for a fast quote.
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Quick Specifications
Product Type
Asphalt Roofing Felt / Saturated Felt
Standards
ASTM D226 (15#/30#), ASTM D4869 (15#/30#)
Material
Organic fiber felt saturated with premium petroleum asphalt
Thickness
0.5mm, 0.8mm
Weight Grade
15lb, 30lb, 40lb, 50lb, 60lb
Roll Width
1m (36 inch)
Roll Area
216 ft² / 432 ft² depending on type
Surface
Talcum powder or fine sand to prevent sticking
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Product Overview
Essential Pitched Roof Underlayment
Asphalt saturated organic felt, often referred to as roofing felt or tar paper, is a time-tested material used as an underlayment in pitched roofing systems. By saturating a high-quality organic fiber mat with premium petroleum asphalt, we create a durable moisture barrier that is both flexible and vapor-permeable.
Primarily used under asphalt shingles, this felt protects the roof deck during construction and provides a critical secondary layer of defense against weather throughout the roof’s life. As a specialized manufacturer, Tianyuan supplies export-quality asphalt felt conforming to international ASTM standards, supporting B2B clients with customized roll specifications and private label services.
Quick Facts
Reliable Underlayment
The critical secondary defense layer installed over the roof deck before applying final roofing materials.
High Saturation
Thick organic fiber base is fully saturated with asphalt for superior water and moisture resistance.
Vapor Permeable
Allows internal moisture vapor to escape while blocking liquid water ingress from the outside.
Versatile Protection
Protects the roof deck from rain and weather during construction and throughout the roof's life.
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Applications
Industrial & Civil Roofing
Used in industrial plants and civil buildings as a cost-effective waterproofing underlay.
Temporary Protection
Provides immediate, short-term weather protection for the roof deck before final tiles are installed.
Auxiliary Waterproofing
Suitable for underground damp-proofing, tunnels, and pools as a supplementary moisture barrier.
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Key Benefits
Moisture Barrier Support
Significantly reduces the risk of water damage caused by ice damming and severe weather events.
Easy Construction
Lightweight and flexible rolls are easy to handle, cut, and mechanically fasten to wooden decks.
Proven Performance
A time-tested material used globally for decades in diverse climatic conditions.
Cost-Effective
The most economical choice for ensuring long-term roof deck integrity in pitched roof systems.
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Technical Data
| Test Item | Unit | Test Method / Standard | Requirement / Class | Result / Notes |
|---|---|---|---|---|
| Applicable Standard | — | ASTM D226 / D4869 | Standard Conformity | Passed |
| Breaking Strength (MD) | lbf/in | ASTM D226 | 15# ≥ 30; 30# ≥ 40 | Qualified |
| Breaking Strength (CD) | lbf/in | ASTM D226 | 15# ≥ 15; 30# ≥ 20 | Qualified |
| Pliability (23°C) | — | ASTM D226 | 90° bend / 12.7mm radius | No crack |
| Net Mass (15# Type) | g/m² | ASTM D226 | ≥ 560 | 580+ |
| Saturation by Weight | % | ASTM D226 | ≥ 120 | 135%+ |
| Loss on Heating | % | ASTM D226 | ≤ 4.0 | Passed |
The above values are typical reference values from laboratory tests and do not constitute a warranty. Full TDS is available on request.
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Installation Guide
Substrate Prep
Ensure the roof deck is clean, dry, and secure. Remove all loose debris and sharp objects.
Primer Application
If applying over concrete, use a cold primer and wait for it to dry before paving the felt.
Horizontal Paving
Install horizontally starting from the low point of the pitched roof (eaves) moving upwards.
Overlap Layout
Maintain a minimum 150mm overlap at roll ends and 100mm at side overlaps.
Mechanical Fixing
Secure the felt using galvanized roofing nails or heavy-duty staples to the wooden deck.
Final Protection
Install the primary roof covering (shingles/tiles) as soon as possible after underlayment application.
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Packaging & OEM
Roll Protection
Each roll is wrapped in protective plastic film to prevent moisture absorption during transit.
Vertical Storage
Store rolls in an upright position in a dry, ventilated area below 45°C.
Custom OEM Supply
Supports custom roll weights (15lb-60lb), lengths, and private label branding for distributors.
Efficient Loading · Secure Packing · Global Delivery
Container Load
Approx. 800 - 1,200 rolls per 20FT container
Standard Width
1m (36 inch)
Weight Grade
15lb, 30lb, 40lb, 50lb, 60lb
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Downloads
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FAQ
Why is asphalt felt used under shingles?
It acts as a secondary barrier that protects the wooden deck from wind-driven rain if shingles are damaged or blown off.
Is this felt suitable for flat roofs?
No, this organic saturated felt is specifically designed for pitched roofs as an underlayment, not as a primary waterproof layer for flat roofs.
What is the difference between 15# and 30# felt?
30# felt is thicker, heavier, and provides superior tear resistance and durability compared to the lighter 15# felt.
Can it be left exposed to the sun?
It provides temporary protection, but it should be covered by shingles or tiles within a few days to avoid UV degradation.
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