WebDo NOT fasten shingles directly to insulation or insulated deck unless authorized in writing by GAF. Roof decks and existing surfacing material must be dry prior to application of shingles. t 6/%&3-":.&/5 -&", #"33*&3 Install GAF leak barrier at the eaves in localities where leaks may be caused by water backing up behind ice or debris dams. WebNov 12, 2024 · The minimum roof pitch for shingles is a 2:12 pitch. If your roof is less than 2 vertical units (inches or feet) up for every 12 horizontal units out, it’s considered low slope. But why...
CODE EVALUATION REPORT CODE EVALUATION REPORT CER
WebLOW-SLOPE: For roofs having pitches 2" per foot up to but less than 4" per foot (2:12 up to but less than 4:12), refer to special instructions titled “Low Slope Application.” MANSARD ROOF OR STEEP SLOPE: For roofs having pitches equal to or greater than 21" per foot, refer to special instructions titled “Mansard Roof or Steep Slope Roof.” Webslopes below the designed minimum, the roof coverings are considered decorative and must be installed over a roof-covering system complying with the applicable code, subject to approval of the authority having jurisdiction. GRANITE-RIDGE Shingle shall be installed at a minimum slope of 4:12 (33.3%). how to create good landing page
What is the Minimum Roof Pitch for Asphalt Shingles? - Bill Ragan …
WebDec 16, 2013 · We specialize in composition shingles, torchdown, single ply, metal roofing, wood shakes, slate and concrete tile. We have been providing quality re-roofs in the North West for over a decade. If you are planning to re-roof your house, need an inspection give us a call at 253-445-8950 , or fill out our free estimate form Web2009 and 2006 IRC, the roof underlayment must be installed in accordance with Section R905.2.7. Minimum roof slope must be 2:12(17-percent) except for underlayment used with the Glenwood ® Shingle that must be installed on roofs with a minimum slope of 3:12 (25-percent). For roof slopes from 3:12 (25-percent) to 4:12 (33-percent), the Glenwood ® WebThe asphalt shingle manufactures recommend that you install asphalt shingles on a recommended minimum of 4 in 12 or greater however most manufactures will warrant their shingles down to a 2 in 12 pitch if the recommended installation method is used. Installation on roof slopes below a 2 in 12 pitch is not recommended at all. how to create good luck