Find gaf s specifications for timberline hdz here.
Asphalt shingle roof specifications.
1 2 references continued standards and building codes.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
Here s a closeup view of an asphalt roof shingle.
Size and thickness of a quarter spots of asphalt plastic cement placed under the shingle 51 mm 2 inches above the bottom edge and equally spaced along the shingle.
The series highlights our popular duration shingles along with up to 7 other duration styles depending on where you live that feature unique performance characteristics.
Asphalt shingles can be installed on roof slopes of 2 12 to 4 12 if special procedures are followed for underlayment see details at roofing underlayment best practices or see comments on page 54 in the printed text best practices guide.
Astm e 108 standard test methods for fire tests of roof coverings.
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Experience the total owens corning roofing system and high quality roofing shingles.
4 per shingle minimum 6 per shingle in high wind areas and the coast line.
Roofs with slopes greater than 4 12 require only one layer of underlayment.
This type of roof shingle consist of a fiberglass mat saturated on both sides with hot asphalt.
Or stapled with crown width length per manuf.
More than 70 of all houses in north america are covered in asphalt roof shingles.
Astm d 4869 standard specification for asphalt saturated organic felt shingle underlayment used in roofing.
When this covering is installed on roofs sloped between 2 12 and 4 12 two layers of underlayment are required.
The top surface of the shingle includes a granule mineral coating.
Low slope roof specifications for asphalt shingle roofs.
Astm d 4586 standard specification for asphalt roof cement asbestos free.
Section r301 2 1 requires that asphalt shingles be designed in accordance with section.
Yes meets astm d3462 requirements.
Let owens corning help you determine when it is time for a new roof and then let us help you choose the shingles for your roof that are right for you.
Verify color with owner.
We can even help you find a professional to install it.
Astm c 1549 standard test method for determination of.
Roofing nails long note.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
Furnish and install new aluminum coil stock to cover all fascia and roof trim.
The irc permits the installation of asphalt shingles on continuous sheathing for roofs with slopes as low as 2 12.
