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Product Details:
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| Product Name: | Asphalt Felt Paper For Shingle Underlayment | Type: | No.15/No.30 |
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| Standard: | ASTM D4869/ASTM D226 | Thickness: | 0.4mm-1.0mm |
| Width: | 36inch | Production Capacity: | 500rolls Per Day |
| Ingredients: | Paper And Asphalt | Technics: | Impregnation |
| Color: | Black | Packing Label: | Customized |
| High Light: | sbs underlayment for roofing,asphalt felt paper sbs underlayment,36 sbs underlayment |
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Asphalt Felt Paper For Roofing Shingle Underlayment
Introduction
Asphalt felt paper has been the go-to substrate for roof shingles for more than a century, and it's still quite popular because of how well it works and how affordable it is.
Traditionally, asphalt felt underlayment has been 36inch wide, 15lb or 30lb felt impregnated paper, and it is used as a weather resistant layer over the entire roof surface. It keeps sheathing dry until shingles are installed, serves as a backup layer when water gets under shingles or flashing, and prolongs shingle life by separating sheathing and shingles. (Without underlayment, shingle asphalt can leech into wood sheathing, or resins in sheathing can degrade the shingle.)
Heavy duty, 30lb felt paper is often specified in high-wear, high-water areas such as eaves and valleys. A standard roll of 3-ft wide, 15lb felt paper covers roughly 432 sq.ft, the same size roll of 3-ft wide, 30lb paper covers only 216 sq.ft because it's roughly twice as thick.
Specifications
Roll width:36inch
Area:216sq.ft/432sq.ft
Physical properties data
| Test item |
ASTM D4869 30# |
ASTM D226 30# |
ASTM D4869 15# | ASTM D226 15# |
| Pliability at 23±2°C.tested shall not crack when bent 90°at a uniform speed over a rounded corner of radius in table for each |
12.7mm (radius) |
19.1mm (radius) |
12.7mm (radius) |
12.7mm (radius) |
| Tear strength at 23±2°C min | 3.0N | 5.0N | 2.0N | 2.5N |
| Breaking strength at 23±2°C min MD | 40lbf/in | 40lbf/in | 30lbf/in | 30lbf/in |
| Breaking strength at 23±2°C min CD | 20lbf/in | 20lbf/in | 15lbf/in | 15lbf/in |
| Loss on heating at 105°Cfor 5h max | 6.0% | 4.0% | 6.0% | 4.0% |
| Width of the roll | 36 in | 36 in | 36 in | 36 in |
| Area of the roll | 216 ft2 | 216 ft2 | 432 ft2 | 432 ft2 |
| Net mass of saturated felt,min | 660g/m2 | 1200g/m2 | 360g/m2 | 560g/m2 |
| Saturation,%by wt., min | 120% |
150% |
100% | 120% |
How to store
It requires protection from damage and the weather. Store rolls upright in a dry location and never install when wet or over a wet roof deck.
Contact Person: Angela
Tel: 008615511775265
