Product Description
Asphalt roofing felts are designed as an underlayment product to be applied over the roof deck prior to the installation of asphalt shingles. Install asphalt roofing felt as a secondary barrier to moisture caused by wind driven rain and ice damming. A heavy-weight asphalt roofing felt made of a specially formulated organic sheet which has been fully saturated with waterproofing asphalt. Asphalt roofing felt used as roof underlayment beneath asphalt shingles,wood shakes,tiles and other slope coverings. Asphalt saturated organic roofing felt 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. There are totally four types: ASTM D-4869 15#, ASTM D-4869 30#, ASTM D-226 15#, ASTM D-226 30#.
Product Parameters
Feathers and benefits:
heavy organic mat
high asphalt saturation
heavier roll weight
tightly wood roll lengths
excellent standard packaging
highly visible alignment lines
high tear strength
easier roll-out-less sticking
test items |
ASTM D-4869 15# |
ASTM D-4869 30# |
ASTM D-226 15# |
ASTM D-226 30# |
pliability at 23±2ºC, tested shall not crack when bent 90ºC at a uniform speed over a rounded corner of radius in table for each |
12.7mm |
12.7mm |
12.7mm |
12.7mm |
tear strength 23±2ºC min |
2.5N |
2.5N |
2.5N |
2.5N |
breaking strength at 23±2ºC min MD |
30lbf/in |
40lbf/in |
30lbf/in |
40lbf/in |
breaking strength at 23±2ºC min CD |
15lbf/in |
20lbf/in |
15lbf/in |
20lbf/in |
loss on heating at 105ºC for 5h max |
6% |
6% |
4% |
4% |
width of the roll |
36in |
36in |
36in |
36in |
area of the roll |
432sq.ft |
216sq.ft |
432sq.ft |
216sq.ft |
net meass of saturated felt min |
380g/m2 |
650g/m2 |
660g/m2 |
1100g/m2 |
saturation % by wt, min |
100% |
120% |
120% |
150% |
Packaging & Shipping
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loading quantity
ASTM D-4869 15# 36in*144ft*0.4mm
loading quantity:1040 rolls with pallet,
1400rolls in bulk.
ASTM D-4869 30# :36in*72ft*0.6mm
loading quantity: 1040 rolls with pallet,
1400 rolls in bulk.
ASTM D-226 15# :36in*144ft*0.6mm
loading quantity: 600 rolls with pallet, 800
rolls in bulk.
ASTM D-226 30# : 36in*72ft*1.1mm
loading quantity: 600rolls with pallet, 780
rolls in bulk.
Installation Instructions
Installtion instructions:
1) The roofing deck must be clear of all debris and moisture prior to installation of organic roofing felt.
2) Roofing felt should be installed from the bottom of the roof deck in horizontal layers. The first layer of felt should be installed to cover the entire bottom edge of deck. This increases the water shedding ability of organic roofing felt.
3) Anchor the top corner of the roofing felt after the roll has been properly positioned in place and spread the roll across the roof. Care must be taken to roll out roofing felt roll smoothly and avoid any wrinkles as the roofing sheet is rolled across the roof.
4) Apply underlayment with minimum 12ga, 1-1/4" ring shank nails through minimum 32ga, 1-5/8" diameter tin caps. Fastener spacing should be a maximum of 6 inches on center at laps and 12 inches on center in two rows in the field.
5) For Roof Slopes from two units vertical in 12 units horizontal (17% slope) and up to four units vertical in 12 units horizontal (33% slope) underlayment must be applied in double layer with a 19 inch headlap and minimum 6 inch sidelap. Distortion in the roofing felt underlayment shall not interfere with ability of shingles to seal. 6) For roof slopes of four units vertical in 12 units horizontal (33% slope) or greater, underlayment shall be applied in a single layer with a 4 inch headlap and minimum 6 inch side lap. Distortions in the roofing underlayment shall not interfere with ability of shingles to seal.
7) At hip and ridge intersections, fasten the top course if it terminates at the top edge of the roof. Otherwise, overlap the underlayment over the hip or ridge and fasten the roofing felt. 8) In Valleys, lay a vertical section of the organic roofing felt in the middle of the valley along the length of the valley prior to installation of the horizontal courses of the roofing felt. Horizontal courses at the valley intersection shall be woven.
9) Take precaution to avoid wrinkles. In the event some wrinkles are formed while fastening the felt, slice the wrinkles and fasten them flat to the deck. Then seal the cuts with waterproofing cement.
Company Profile
Cangzhou Jiansheng Building Waterproof Materials Co., Ltd. is a professional enterprise integrating the production and sale of building waterproof materials. Our company covers an area of 10, 000 square meters. There are 60 people in our company, including 5 professional senior engineers and 24 technicians. Our company is to set up a technological research team which consists of professionals, scholars and experts. Our company is specialized in the production and operation of various types of high and mid-grade new building waterproof materials, including SBS, APP modified bitumen membrane, polypropylene, and PE polyester. We have domestically advanced production lines with annual production capacity of 8 million square meters, advanced equipment, and strict scientific quality control system according to standards. At the same time, we produce SBS polymer waterproof coating, Chloroprene latex, asphalt and other series of waterproof paint. Our company is also equipped with first-class raw materials testing equipment as well as process control and finished product quality testing center. Our company is willing to cooperate with friends sincerely to advance hand in hand and create a better future.
FAQ
»Q1. What's your product range?
A1:As a factory ,We mainly produce SBS modified bitumen membrane, ASTM standard paper based asphalt roofing felt, EN standard breathable waterproof underlayment , self-adhesive polymer modified bituminous waterproof membrane and other waterproof coating.
»Q2. Can I order samples?Are you free for samples?
A2: Yes, we provide with free sample, and you should pay for the freight, which can show both of our sincerety, we can return back the money to you when you place order from us.
»Q3. What's your delivery time?
A3:We are manufacturer, so we can efficiently control the production time, usually our delivery time is 10-25 working days.
»Q4. What's your payment terms?
A4:30% on deposit, 70% balance against copy of B/L after loading.
»Q5. Can you produce the product according to customers' requirements?
A5: Sure, we are professional manufacturer, OEM and ODM are both welcome.