Active Member
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[China]
Address: The east industry zone of Nanpi County, Cangzhou City, Hebei Province
Contact name:Angela
Cangzhou Jiansheng Building Waterproof Material Co.,Ltd |
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ASTM Standard Waterproof Paper Roofing Felt Paper Waterproofing Coatings
Roofing felt (felt paper, asphalt felt paper) is a kind of waterproof and damp proof product,its basic is kraft paper and soak,normal use under shingles and roofing.
Physical Requirements
| Test item | ASTM D-226 15# | ASTM D-226 30# | ASTM D-4869 15# | ASTM D-4689 30# |
| Tear strength | 2.5N | 2.5N | 2.5N | 2.5N |
| Breaking strength at 23±2°C min MD | 30LBF/in | 40lbf/in | 30lbf/in | 40lbf/in |
| roll length | 144ft | 72ft | 144ft | 72ft |
| roll width | 36 in | 36 in | 36 in | 36 in |
| Area of the roll | 432 ft2 | 216 ft2 | 432 ft2 | 216 ft2 |
| weight per m2 | 560 g/m2 | 1270g/m2 | 400g/m2 | 660g/m2 |
| bitumen absorbation | 120% | 150% | 100% | 120% |
Used
A roofing felt used as an underlay beneath asphalt shingles, wood shakes, tiles and otherslopedcoverings.Saturated organic felts require protection form damage and the weather. store rolls upright in a dry location and never install when wet or over a wet roof deck.
Specification:
15# ASTM Specification Felt
Meets ASTM D 226, Type I
Dimensions: 144' X 36"
Approx. Sq. Ft. per Roll: 432 Sq Ft
30# ASTM Specification Felt
Meets ASTM D 226, Type II
Dimensions: 72' X 36"
Approx. Sq Ft per Roll: 216 Sq Ft
NO 15 Specification Felt
Meets ASTM D 4869, Type I
Dimensions: 144' X 36"
Approx. Sq Ft per Roll: 432 Sq F
NO 30 Specification Felt
Meets ASTM D 4869, Type I
Dimensions: 72' X 36"
Approx. Sq Ft per Roll: 216 Sq Ft
Application:
Anchor the top corner of the Felt roll after it has been properly positioned in place; then spread the roll across the roof. Care must be taken to roll out the Felt smoothly and to avoid any wrinkles as the Felt is unrolled across the roof.
Install fasteners at least eight inches at the top and middle edges and at the eave along the deck.
At slopes between 2:12 and 4:12 pitch, install a double layer of Felt as follows. Apply a minimum 19 inch wide strip of Felt parallel to and starting at the eaves, fastened sufficiently to hold in place. Starting at the eave, apply a full width Felt roll, overlapping successive sheets 19 inches, fastened sufficiently to hold in place.
Organic Felt rolls must be installed horizontally, from the bottom of the roof deck.
The first layer of Felt rolls must be installed to cover the entire bottom edge of the roof deck to facilitate the water shedding ability of the Felt.
