A joint undertaking by the alberta roofing contractors association roofing contractor member and arca, and is available for projects. For architects, roof designers, roof consultants, contractors, spec writers, attorneys, materials manufacturers anyone who needs authoritative, uptodate information on all aspects of roof technology the manual of low slope roof systems dominates the field. Repair manual for lowslope membrane roof systems perfect paperback january 1, 2007 5. The panels are available in many profiles, widths, and seam types. Life and warranty depend on the number of layers and can vary between 1020 years. The nrca roofing and waterproofing manualfifth edition 2006 update. Low slope roof systems for state owned facilities should be designed for life expectancies of 20.
From its inception until 1992, it was titled the roofing materials guide. A roof that is nearly flat or slightly pitched is called a flat roof or low slope roof no roof should be dead flat because it must have at least a slight slope to drain. Historical background of contemporary roof systems chapter 10. Install the roof flange of the edge metal over the base sheet at the lowest point on the roof. Manual of lowslope roof systems mcgrawhill education. Nail the edge metal 4 inches on center in a staggered pattern. Roof system types roof systems and materials generally are divided into generic classifications.
Read manual of lowslope roof systems fourth edition by richard fricklas available from rakuten kobo. Search hello select your address select your address. Low slope roofs are often referred to as flat roofs. Systems incorporating epdm and modified bitumen membranes, with a shorter service life andor 4ply bur low slope roof systems, with high material usage and short service life impose the greatest impacts. Roof failure causes in depth and specific methods for avoiding them. For residential low slope owens corning has applied its 75 years of building science technology to introduce the deckseal selfadhered sa roofing system for residential low slope. The horizontal line formed by the two nailed together rafters of a sloping roof. Terms in this set 1 low slope roof is defined as a roof whose slope is less than. Drill with 732 bit, impact gun with 12 socket, appropriate roof sealant, pencil, chalk line bi 7. Deckseal roofing membranes deliver premium, durable system performance for many challenging low slope applications, such as additions, garages and porches.
He is a consulting engineer specializing in roofing and energy conservation and a former senior editor for mcgrawhills engineering newsrecord. Metal roof panels are fabricated from a variety of metals like copper, aluminum, or galvanized steel. A joint undertaking by the alberta roofing contractors association roofing contractor member and arca, and is available for projects that specify arca accepted roofing systems and materials. The system consists of a roof covering and roof deck. This is important because the osha definition is used as a basis for implementing lowslope fallprotection measures, such as warning.
New roof construction r m a n u a l cedar shake and. Report copies should be included in the file prepared for the owner. The right lowslope roof for your project there are many factors to be considered when deciding which roofing system is right for your building. Click download or read online button to get manual of low slope roof systems book now. The moisture control for low slope roof assemblies. Description repair manual for lowslope membrane roof systems. Description repair manual for low slope membrane roof systems. Introduction to es1 ansi spri fm 4435 es1, the wind design standard for edge systems used with lowslope roofing systems, was the result of collaboration between spri and fm global to address a need for a universal test standard and establish a reference for designers, specifiers, and installers of. Low slope roofing may look flat, but except in rare circumstances, it has a minimal slope to eliminate rain water, either over the side perhaps through a scupper, or internally to a roof drain. New roof construction r m a n u a l best materials. Pvc polyvinyl chloride and tpo thermoplastic polyolefin are two common singleply membranes. The right low slope roof for your project there are many factors to be considered when deciding which roofing system is right for your building. City of miami beach hvhz electronic roof permit form section c page low slope roof systems fill in the specific roof assembly components.
According to the manufacturer, vacuseal systems are quick and easy to install and save cost and labor by substantially reducing the amount of glue, ballast, or fasteners a project requires. The 2015 manual nrcas mainstay manual is updated and rearranged for ease of use by maciek rupar april 2015 professional roofing 35 the nrca roofing manual. For a roof recover that is keeping the low slope structure, a roofer may add tapered insulation and then a new roof covering of epdm or other roofing material. A lowslope roof is one that has a slope of less than 3in12. Fricklas was technical director of the roofing industry educational institute. Roof slope osha defines a lowslope roof as a roof having a slope of less than or equal to 4 inches of vertical rise for every 12 inches horizontal length 4.
If the roof fails within warranty, it is important to consider other costs the owner might have to endure. For a roofrecover that is keeping the low slope structure, a roofer may add tapered insulation and then a new roof covering of epdm or other roofing material. Since most low slope roofs are not vented, ice dams are much more likely to occur and cause extensive damages to the roof and the interior of the house, as it is a lot easier for water to travel upward on a low pitch roof. Available finishes include kynar 500 35year coating, with a wide array of standard colors. While generally written from the perspective of new construction, the information presented. Typically, covered by shingles or architectural sheet metal. Membrane roof systems2015 was released in march and updates and replaces the nrca roofing manual.
The only option might have been whether the roof was asphalt based on the dregs of the crude oil refining process or coal tar a byproduct of coke used in basic steel making. Nrca roofing and waterproofing manual pdf the nrca waterproofing manual by national roofing contractors association on. In most cases we custom fabricate a single sheet the size of each roof, eliminating the risks associated with field seaming. His books include energy conservation in buildings and the systems approach to school construction. The external angle formed by two sides of a roof meeting. Perhaps they believe the warranty will provide them with the protection needed to ensure proper roof integrity and assembly. Manual of lowslope roof systems fourth edition roofing. This site is like a library, use search box in the widget to get ebook that you want. There are certain criteria that are required for the proper application of all lowslope roof systems. Read manual of low slope roof systems fourth edition by richard fricklas available from rakuten kobo. The successful construction of a lowslope roof system requires adherence to proper application methods. A roofing contractor can enhance the probability of success by administering assurance methods that can be followed by project managers foremen, superintendents, etc.
This chapter describes four types of common roof membranes. Low slope roofing includes water impermeable, or weatherproof, types of roof membranes installed on slopes less than or equal to 3. Schematic representation of low slope roofing top and my own analysis bottom, from edward allen, how buildings work, 2nd edition. The roof flange of the edge metal should be 3 or 4 inches wide. Ansisprifm 4435 es1 2017 test standard for edge systems. Lowslope roofs are often referred to as flat roofs. To select, detail, and specify the most appropriate roof system for a project. For decades, this manual has been the most widely respected guide to designing, constructing, and maintaining low slope. Low slope mounting instructions installation tools required. When using shingles the overlapping principle is used, where shingles are installed from bottom to top so the shingles can overlap in a way that water rolls from top to bottom shingle without seeping in.
On a gable roof, the inclined edge of the surface to be covered. Nrcas mainstay manual is updated and rearranged for ease. There are certain criteria that are required for the proper application of all low slope roof systems. Lowslope roofing commonly used lowslope roofs the following roof coverings are commonly used for lowslope roofs. Jonathan ochshorn lecture notes, arch 26145614 building. The 1993 edition of this publication was the first one to bear the title. New roof construction cedar shake and shingle bureau. Carlisle syntec systems introduces the vacuseal vent secured roofing system. Griffin is a member of astm international and the american arbitration association.
These roofs are considered to be water impermeable or weather proof. Read about the most breaking industry news, research, or highlighted member projects all. The 1993 edition of this publication was the first one to bear the title commercial lowslope roofing materials guide. A workmanship warranty against leaks and defects on low slope roofing systems in the province of alberta. Schematic representation of lowslope roofing top and my own analysis bottom, from edward allen, how buildings work, 2nd edition. Lowslope roofs traditionally have been constructed with an asphalt builtup roof covering.
Lowslope roofing may look flat, but except in rare circumstances, it has a minimal slope to eliminate rain water, either over the side perhaps through a scupper, or internally to a roof drain. Typically, lowslope roof assemblies are composed of three interrelated components. This system is a series of multiple layers of asphaltimpregnated sheets of felt paper and hot asphalt. Through the voices of professionals in the field, roofings editorial provides a unique perspective. Es1 takes into account all the impor tant factors that go into a properly designed roof edge. The top of the roof system is then covered with a gravel surface to protect the asphalt. Once upon a time, about 100 years ago, all low slope roofs read. Critical aspects of roof system designs are often left unaddressed, resulting in incomplete contract documents. Dec 28, 2006 the successful construction of a low slope roof system requires adherence to proper application methods. Nonnailable roof deckson nonnailable roof decks, nrca recommends.
A workmanship warranty against leaks and defects on lowslope roofing systems in the province of alberta. Products purchased from third party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. Through our experience, we know the costs, benefits and risks of competing systems, allowing for objective and informed specification assistance. If a component is not required, insert not applicable na in the text box. He is a columnist for rsi magazine and writes a web column on roofing for. The roof assembly is defined as the roof deck, along with the roof membrane and roof insulation. Wind damage on low slope roofs from hurricane katrina.
Energy star program requirements for roof products v3. Roofs installed at a 312 pitch or less are considered to be low slope. Lowslope roof systems must meet the required design pressures for the site and the locations on the building. Introduction to es1 ansi spri fm 4435 es1, the wind design standard for edge systems used with low slope roofing systems, was the result of collaboration between spri and fm global to address a need for a universal test standard and establish a reference for designers, specifiers, and installers of edge. This course identifies the information roofing contractors generally need from roof system designers to provide complete and building codecompliant lowslope roof systems. Aug 12, 2016 lester building systems has launched its patented eclipse roof system that combines the structural integrity, efficiency and ease of installation of a throughfastened roof with the sleek appearance and leakfree performance of a standingseam roof. Contact the treatment company for treatment warranty information. Lowslope roof membranes consist of three components. Low slope roofs traditionally have been constructed with an asphalt builtup roof covering. For architects, roof designers, roof consultants, contractors, spec writers, attorneys, materials manufacturers anyone who needs authoritative, uptodate information on all aspects of roof technology the manual of lowslope roof systems dominates the field. Most low slope and flat roofing systems are designed to have their seams put together with glues and adhesives.
Jul 17, 2012 a roof that is nearly flat or slightly pitched is called a flat roof or low slope roof no roof should be dead flat because it must have at least a slight slope to drain. National contractors installs englert and drexel metals roof systems. For decades, this manual has been the most widely respected guide to designing, constructing, and maintaining lowslope roofing systems. The low slope roof systems with lightweight thermoplastic membranes and a long service life impose the lowest global warming impacts. Low slope roofing products, materials, inspections, low.
The uppermost part of the roof system that is in direct contact with solar radiation. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Roof system lowslope roof guidelines in mobile and. Most builtup roof systems are comprised of three layers of felt and asphalt. Ansisprifm 4435 es1 2017 test standard for edge systems used with low slope roofing systems.
Low slope roofing products, materials, inspections, low slope. Wind uplift pressures, from ras 128 or sealed calculations. Nrcas comprehensive repair manual, produced in conjunction with asphalt roofing manufactures association arma and single ply roofing industry spri, will help you identify problems and permanently repair low slope roof membranes. This website requires certain cookies to work and uses other cookies to help you have the best experience. The roof system is defined as the roof membrane including surfacing and the roof insulation. Account for 2030% of all lowsloped roofing systems. Primed edge metal must be dry to the touch before membrane application. The objective of the study was to conduct an analysis of the environmental and cost impacts of north american low slope roof systems. Lester building systems has launched its patented eclipse roof system that combines the structural integrity, efficiency and ease of installation of a throughfastened roof with the sleek appearance and leakfree performance of a standingseam roof. For decades, this manual has been the most widely respected guide to designing, constructing, and maintaining lowslope. Prior to the midtolate 1970s, almost all lowslope roofs were asphalt or coal. Roof systems are guidelines are followed will provide the dependent on proper installation of all the foundation for a robust roof system. For decades, this manual has been the most widely respected guide to designing, constructing, and maintaining low slope roofing systems.
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