It's important to know what kind of a substrate is underneath the wood shakes before removing. The document is specific to Owens Corning asphalt shingles. Builders of sheds, storage buildings, garages, barns, gazebos, pool houses, cottages, custom homes & commercial buildings in CT, MA, RI, PA, NY, ME, NH, VT. According to their documentation, CertainTeed shingles can be installed on 1×8 decking if it is either overlaid or cut. The flue replacement is an upgrade, but the goal of the upgrade is to have the flue conform to code. Therefore, it’s important to determine whether the decking complies with the building code. 2)1x12 will have a lot of … After cutting the sheets at the right size, you should fit them over the rafters and lock them into place with 2��� nails. Boards: 1" to 1-1/2" thick, 2" and wider * Most mills do not manufacture all products and make all grade separations. The CertainTeed document suggests several methods of addressing deck boards wider than 6 inches: To reduce the risk of shingle buckling, you can cover the boards with 4’x8’ nailable decking which could be plywood, OSB, or COM-PLY, or cut through the center of the entire length of each wide board with a hand-held power saw, being careful not to cut into the rafter more than 1/8”. Builders of sheds, storage buildings, garages, barns, gazebos, pool houses, cottages, custom homes & … roof sheathing and the gable truss. I’ve been through the benefits drawbacks and this will be a sealed hot roof. Shiplap is ��� But many roofers believe that it is not as strong as plywood and in particular does not … Enhance Naturals 1 in. Where I am originally from we had this issue all the time as many of the homes had plank roof decking with 1x10's, 1x12's, 1x8's etc. The decking does not have to be replaced. home; products; No differentiation is made between the two, so the statement applies to both. The roof was last shingled about 7 ��� This feature has been temporarily disabled during the beta site preview. the problem is a combination of 2 forces at work. 1x8 - Shiplap WP11 V Resawn Face / V Smooth Back 1x8 - Shiplap 771 Cove Resawn Face 1x6 - Shiplap 1��� SQ Channel Resawn Face 1x8 - Shiplap 1��� SQ Channel Resawn Face 1x10 - Shiplap 1��� SQ Channel Resawn Face 1x8 - WP11 Texture R/S Face Bamboo - Fused Bamboo - Soffit - KD 1/2x4 - Profiled Douglas Fir - Appearance - T&G Roof Decking - KD 23/32 in. Adding an additional layer of planking would add some stiffness to the roof, but the real issue is probably the use of 2x4's as rafters, 24 inch oc, and not the use of 1x8 roof decking. If it's any of the above--and the roof decking is 60+ years old--you surely need new decking with a nailable surface. Since the decking complies with code, how can the roofer insist that there is a problem? Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. The tar paper is applied over these boards and then shingled over. fatboy Administrator. Shiplap roof decking was widely used in the 50 through 80’s era when plywood hadn’t yet made its way into new construction. After entering the values stated above I clicked on "show results" and a 1x8 teak board passed, in all three tests. 1x8 Tongue and Groove. Would you guys just go over the 1x8 or rip it off and replace I … I _____ certify that the roof decking attachment and fasteners have been strengthened and corrected and a secondary water barrier has been provided as required by the “Manual of Hurricane Mitigation Retrofits for Existing Site-Built Single Family Structures” adopted by the Florida Building Commission by Rule 9B-3.047 … . Other Requirements There are 1/4 inch spaces between these boards. 1×8 Eastern White Pine Tongue and Groove can be used for interior wall finish or for ceilings. All styles include authentic mortise & tenon joinery with oak pegs. Roof decking is southern pine as manufactured by S.I. Shiplap roof decking was widely used in the 50 through 80���s era when plywood hadn���t yet made its way into new construction. Free View-only Download (12 pages, 2.3 MB PDF) February 2004. Lead time on Cypress decking is typically 1-2 business days for most sizes and profiles up to 16' long. Maximum moisture content is 19% for 2 x 6, 3 x 6 and 4 x 6. SHEATHING Section 1--Overview. The roof is 2x6" rafters, 2" rigid foam with cellulose blown behind. In addition, there are other layers between the shingles and decking, such as tar paper or felt. Pressure treatment entails immersing wood in a preservative and applying pressure … Please inspect and provide a determination of whether the 1″x8″ decking complies with building code for solid decking. Is this typical up in the NE or The roof on my house has 1x8 for sheathing with roughly 3/4" gaps between them on top of enginneered trusses. Shingle manufacturers are also requesting additional requirements. It is nominal 2 x 6, 3 x 6, or 4 x 6 in #1 or #2 grade and kiln dried. ARAC Roof It Forward is a local roofing contractor offering a full range of roofing and exterior remodeling services, including roof repair and replacement, gutters, insulation, woodwork, and more. Replacing roofing shingles, should we add plywood on top of the original pine decking? Cutting would meet the requirements for the use of GAF and Owens Corning shingles as well. 10x10 and 12x12 beam profiles have a lead time of 2-3 weeks. Being ideal for asphalt shingles in the early days of its creation, shiplap sits beneath the roof of many homes about thirty years old. (roof slope < 2:12) single-ply roof system coverings installed in accordance with Sections 1507.12 and 1507.13 shall be designed in accordance with Section 1504.8 and ANSI/SPRI RP-4. Timber tongue and groove decking is a specialty lumber product, constituting an important part of modern timber construction, that can be used for many applications to provide an all-wood appearance. A city permit process will often force a contractor to replace a water heater’s flue at the same time the water heater is replaced. 1x3 - 1x8 Flooring: 1x3 - 1x8 ... DOUGLAS FIR OR HEM/FIR T&G DECKING: GRADE: SIZE. The document states, “If you apply a shingle roof over a deck surface that is unacceptable to the shingle manufacturer and damage results, the warranty might not be honored” (emphasis added). The contractor provided two GAF Technical Advisory Bulletins. If I were you, I would install the foam first. The boards are not butted tightly; there is probably about a ¼" gap on average. It concluded that ���a roof is a unified product comprised of all its component parts and materials, including . Portland, Maine.The walls and roof of my 1950 cape home are sheethed with 1×8 pine boards (interesting as they came from the foundation form after it was poored for the house). I _____ certify that the roof decking attachment and fasteners have been strengthened and corrected and a secondary water barrier has been provided as required by the ���Manual of Hurricane Mitigation Retrofits for Existing Site-Built Single Family Structures��� adopted by the Florida Building Commission by Rule 9B-3.047 F.A.C. As seen in the photos, the attic framing consists of wood trusses and wood decking. It sounds like you are installing 2 inches of rigid foam under the rafters, and blowing cellulose directly against the roof sheathing. If you discover wide wood board decking that needs to be cut or covered over to avoid potential buckling problems, be sure to take this cost into account. Roof is 1 layer of 3 tab asphalt shingles that are in need of replacement (it will be a full year off). Too many courses of shingles/nails hitting the cracks & so on. All of this weight adds up, and decking … The roof is 2×6″ rafters, 2″ rigid foam with cellulose blown behind. Timber frame kits shipped nationwide. It adds proven performance and durability to new homes, room additions and renovations. . If you want to install trims to the end rafters, the roof decking should overhang about 3/4���. 1x8 tongue groove decking span how far 1x8 tongue groove decking span how far t and g roof decking on-centre span in timber framing/log re: t and g roof decking on-centre span « reply 1 on: may 22 2016 12:58:43 pm you maybe able to do a 'deflection Roof Decks: For securement requirements of the roof decking for minimum Class 1-60 wind uplift rated roofs, refer to FM Global Property Loss Prevention Data Sheet 1-28. The contractor provided an ICC Evaluation Service document ESR-1372, dated January 1, 2012.

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