consider the roof system as compliant to UL 2218 Class 4 without impact resistant cap shingles. Figure 10-1: Slope definitions. STANDARD OR STEEP SLOPES: CertainTeed recommends. DiamondDeck Synthetic Underlayment, Roofers' Select High. Performance Underlayment, or shingle underlayment meeting
Mar 30, 2017 . Easy to Handle: Moving composite shingles from ground level to the roof is difficult and dangerous. . If your roof pitch declines up to 1 inch vertically for every 12 inches horizontally, it is a candidate for roll roofing (1:12 pitch) as long as you use the concealed nail method of fastening. Otherwise, the safest..
Jan 11, 2017 . So it's time for a new roof, or perhaps you are planning a new home construction project and are considering what your new roof should look like. Surely, you have heard about all the exciting new roofing materials available today and are eager to get started. But, before you can make the call on what to put..
Oct 24, 2013 . Second, depending on the type of roof being installed and the required fire rating, roof pitch determines the type of required underlayment system and thus plays a very important role in pricing a roofing job properly. For example, a composition shingle roof that is between 2:12 and 4:12 pitch requires two..
May 3, 2017 . Shingles. One reason roofing professionals use asphalt shingles is their ease of installation and maintenance. ARMA offers insight on installing and maintaining asphalt shingles in order to maximize the service life of a steep-slope roofing system. More on this topic..
May 27, 2011 . What Slope Is Considered. Low Slope For Shingles? A roof slope of 2:12 up to but not including 4:12 is considered as Low in residential construction. What Precautions Need To. Be Taken To Install Shingles. On Low Slopes? For low slopes, as well as any other slope, your local building department..
Seems to me a steep hillside erodes more quickly than a low slope, so I'd think that roof shingles would wear out more quickly on a steeply sloped roof. George . Actually, factors other than pitch have a greater effect on shingle durability. The side ... Q: I have an old tract house with composition roof shingles. I need to..
First we will illustrate the type of property on which the shingles 1 will be installed. This will be the "average" home which offers 2200 square feet distributed across two stores. The footprint 3 of this home is around 24'x45', and the roof is a very simple design without a lot of valleys or angles. If the roof has a moderate pitch of..
Mar 1, 2000 . Former senior editor Roe A. Osborn replies: According to the Asphalt Roofing Manufacturers Association (301-348-2002), asphalt shingles can be applied to a roof with a pitch as shallow as 2-in-12. However, roofing over old shingles should be done only when the existing shingles and the roof underneath..
SINGLE-PLY MEMBRANE. A roofing membrane that is field applied using one layer of membrane material (either ho- mogeneous or composite) rather than multiple layers. UNDERLAYMENT. One or more layers of felt, sheathing pa- per, nonbituminous saturated felt or other approved material over which a steep-slope roof..
Feb 23, 2018 . The world of roofing materials is your oyster, right? Not so. Many factors determine which roofing materials you can use. One make-or-break factor is roof pitch. For example, you may think you want classic composite shingles on your roof, but if your pitch is below a certain ratio, you may be forced to install a..
Apr 21, 2013 . That works out to about nine degrees if that works better for you. A shingle roof, like this North Dallas garage in the photo above, may have a failure, no matter how good a job the installer did. This minimum slope requirement can be found in the installation instructions for almost every manufacturer and in..
by Kenton Shepard and Nick Gromicko. The purpose of the series Mastering Roof Inspections is to teach home inspectors, as well as insurance and roofing professionals, how to recognize proper and improper conditions while inspecting steep-slope, residential roofs. This series covers roof framing, roofing materials, the..
Low slope roofs, inspection, installation, troubleshooting: this article defines low-slope roofing and describes low-slope roofing materials, choices, installations, inspection, defects, roofing repairs, and product sources. . Roof is now coverded in 30 year composite shingle. The city inspector says it's a single layer of felt