The following volumes of The NRCA Roofing Manual include customizable construction details: The NRCA Roofing Manual: Steep-slope Roof Systems2021 The NRCA Roofing Manual: Metal Panel and SPF Roof Systems2020 The NRCA Roofing Manual: Membrane Roof Systems2019 }xOU>e5Gpt|. My firm is doing a re-roofing project. Testing standards define test methods and minimum acceptable results Rating standards establish measurement methods for a fair comparison of products I can't find anything in the code. There are different types of standards for building construction, and it is important to be familiar with all of them. 92 0 obj <> endobj You must log in or register to reply here. If you use The NRCA Roofing Manual: Mem brane Roof Systems2007, you should note that NRCA has reformatted its construction details pertaining to curb design. PDF Roofing Design Requirements - DFCM NRCA recommends roof system designers specify crickets at the upslope side of chimneys or curbed roof penetrations (skylights) when any of the following conditions apply: The chimney or curb is at least 24 inches wide. Underlayment for asphalt shingles, clay and concrete tile, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles, wood shakes, metal roof panels and photovoltaic shingles shall conform to the applicable standards listed in this chapter. Metal-sheet roof coverings installed over structural decking shall comply with Table 1507.4.3(1). Copyright 2023 National Roofing Contractors Association | endstream endobj 34 0 obj <>>> endobj 35 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/TrimBox[0.0 0.0 648.0 783.0]/Type/Page>> endobj 36 0 obj <>stream But the roofing industry needs to take a better stand in the design process by recommending the use of a curb system as outlined above in an effort to make known that its belief and trust in the use of such a system is paramount in the team effort to build better roofs. New manual, updated guidelines | Professional Roofing magazine The NRCA Construction Details: CAD Files2021 are available in an electronic format. By closing this message or continuing to use our site, you agree to the use of cookies. National Roofing Contractors Association Home - NRCA ", In all the curb details, NRCA has added, "NRCA recommends that designers consider permanent internal or external fall-protection devices at all skylights.". These construction details have been updated. Codes and Standards - National Roofing Contractors Association - NRCA 4) and the Architectural Sheet Metal Manual (SMACNA 2012) for flashing details. A new construction detail for equipment curbs is in Chapter 7Construction Details. Manual: Membrane Roof Systems2019; The NRCA Roofing Manual: Architectural Metal Flashing and sizes in one roof opening. Most roofing professionals understand a building's roof assembly serves an important role in controlling a building's overall energy efficiency and building owners' heating and cooling costs. The NRCA Roofing Manual - NRCA Product Format The NRCA Roofing Manual NRCA's premier technical publication gives you the most current and useful technical information in the roofing industry. Copyright 2023 National Roofing Contractors Association, Join 25,000+ roofing professionals following NRCA, Advancing the roofing industry since 1996. Developed and implemented by state or local governments, building codes are performance and prescriptive construction requirements for commercial and industrial buildings. By closing this message or continuing to use our site, you agree to the use of cookies. Click here to access NRCA's database of energy codes by state. The mall re-roofed about 2 years ago and as is typical they installed about 4 inches of insulation which lowered the curbs height from 12 to about 8 inches. Please log in to leave a comment. MARCH 2021 PROFESSIONAL ROOFING 37 The curb should provide a minimum clearance of 10 inches between the top of the nished roof surface and the top of the wood nailer, continuous around the curb perimeter. Please note that the resolution of on-screen versions is not as high as printed versions of PDF files. traditional design will use a minimum of 12 inches / better with 18 inches for curbing here - you have to take into account any roofing insulation applied on deck as well. The manual's previous edition, The NRCA Roofing and Waterproofing Manual, Fifth Edition, provided details for the following curb conditions: In the 2007 edition, NRCA addresses these details by curb type rather than penetration type. NRCA Construction Details: CAD Files2021 (Electronic) hXio8+b&@&mAc"X(6kc[^YN!er-;BMqxe$Q;f4\1c2+3q?3nc6c+,gBp}0+3dV3ib0=[uLLgJ11d?i. New Construction 1. Professional Roofing magazine articles also provide information about roofing-related building codes. At these areas, . Metal slope requirements - NRCA What will you, the roofing contractor, get from a complete system? Spoke with one of our better commercial roofing contractors and he said an 8" curb would be minimum for most roofing manufactures warranty requirements for flashing the curbs. This website requires certain cookies to work and uses other cookies to help you have the best experience. HVAC Hold Down Brackets & Wind Certification - MicroMetl Is there one and if there is would he be required to raise the existing curbs to that requirement? Energy conservation codes usually are adopted by individual states and are applicable to all buildings within that state. 2. notes : 1. gutter brackets are recommended to be at least one gauge heavier than gutter stock. PDF ROOF CURB & UNIT APPLICATION - Johnson Controls