He is a columnist for rsi magazine and writes a web column on roofing for. Fricklas was technical director of the roofing industry educational institute. A lowslope roof is one that has a slope of less than 3in12. Manual of low slope roof systems download ebook pdf. 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. Membrane roof systems2015 was released in march and updates and replaces the nrca roofing manual. Critical aspects of roof system designs are often left unaddressed, resulting in incomplete contract documents. Standing seam metal roofs can go down to 312, but anything below that means that means using some type of membrane, a soldered connection, or something that is 100 percent. Historical background of contemporary roof systems chapter 10. Repair manual for lowslope membrane roof systems perfect paperback january 1, 2007 5. Arca divides roof systems and materials into two classifications. This guide lists minimum performance attributes required of low slope roof assemblies. This guide specification includes materials and installation procedures for 2 ply sbs modified bitumen roofing membrane system over conventional insulated low slope wood deck roof assembly with an air vapour barrier membrane in accordance with the requirements of the nbc for the building envelope. Low slope roofs traditionally have been constructed with an asphalt builtup roof covering.
There are three classifications of low slope roof membranes or systems. Repair manual for lowslope membrane roof systems, 2nd edition. Nrcas mainstay manual is updated and rearranged for ease of use. Steep slope roof systems 20 materials and installation techniques applicable to your projects involving low slope roof system. Most roofing materials asphalt shingles, typical skylights, etc. Identification code a access hatch e expansion joint r roof vent v vent pipe. Nrcas premier technical publication gives you the most current and useful technical information in the roofing industry. It is possible, however, to apply certilabel shakes or shingles to solid sheathed roofs of low slope between 3. Repair manual for low slope membrane roof systems with photos and instructions for more than 150 repairs, your crew will be able to identify problems and permanently repair low slope roof membranes. 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. For over 60 years, iko industries has built its business on asphalt roofing, with products and accessories that make it easy for contractors to install a great roofing system. This chapter describes four types of common roof membranes. Documents in this section are provided as adobe acrobat pdf files. Install the roof flange of the edge metal over the base sheet at the lowest point on the roof.
All roof deck application areas must have positive. Characteristics of membranes and insulations used for low slope roofs. A roof system is exposed to all manner of chemical and physical stress. Description repair manual for low slope membrane roof systems. New roof construction r m a n u a l cedar shake and. The nrca roofing and waterproofing manual, fifth edition, contains. The crca roofing specification manual defines a cant strip as a strip of material of. Membrane roof systems2011 385 chapter 10construction details. This means special care must be taken when selecting low slope roofing material, and during its installation. 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. The roof flange of the edge metal should be 3 or 4 inches wide. Manual of lowslope roof systems fourth edition roofing.
Generally speaking, a roof with a low slope is that which has a pitchmeasured as a ratio of height to widthless than 4. Read manual of lowslope roof systems fourth edition by richard fricklas available from rakuten kobo. The nrca roofing and waterproofing manual fifth edition architectural panel. Nail the edge metal 4 inches on center in a staggered pattern. Nrcas repair manual for low slope membrane roof systems, 2nd edition is available this unbiased, authoritative reference guide offers industry best practices for the repair of low slope membrane roof systems, including thermoplastic and thermoset roof membranes, polymermodified bitumen and builtup roofing, and mechanically attached metal. The repair manual for lowslope membrane roof systems is an excellent. Ruberoidgafglas diamond pledge ndl roof guarantee doc type. Roof system types roof systems and materials generally are divided into generic classifications. This unbiased, authoritative reference guide offers industry best practices for the repair of lowslope membrane roof systems, including. Primed edge metal must be dry to the touch before membrane application. Jonathan ochshorn lecture notes, arch 26145614 building.
From sbs to app and bur, ikos full line of asphalt applied membrane systems include base sheets, cap sheets and selfadhered membranes. Any component of the roof assembly demonstrating an inherent weakness or inability to perform will diminish the roof system performance and service life expected. Higherdensity products provide improved impact resistance. Soprema sbs membrane installation guidelines rcabc roofing. May 06, 2016 any roof with a slope under 412 is considered low slope. Guidelines in this article are based on the nrca roofing manual and practices compliant. Low slope roofing products, materials, inspections, low slope. Deckseal roofing membranes deliver premium, durable system performance for many challenging low slope applications, such as additions, garages and porches. This system is a series of multiple layers of asphaltimpregnated sheets of felt paper and hot asphalt. The nrca repair manual for lowslope membrane roof systems, 2nd edition manual is published by the. Additionally, low slope roofing systems more directly face the sun. His books include energy conservation in buildings and the systems approach to school construction. Click download or read online button to get manual of low slope roof systems book now.
Stagger end laps minimum 300 mm 12 except in systems when soldiering and seam overlays are recommended. 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. Because of the covid19 pandemic, orders will be shipped as soon as possible. Nrca repair manual for low slope membrane roof systems, 2nd. For decades, this manual has been the most widely respected guide to designing, constructing, and maintaining low slope roofing systems. Nrca steep slope roofing manual pdf click here owens corning has applied its 75 years of building science technology to introduce the deckseal selfadhered sa roofing system for residential low slope. Other current volumes in the nrca roofing manual include the nrca roofing manual. Minimum slope for low slope roof systems with any roofing material, a slope of at least 14 inch per foot is recommended to promote drainage and minimize ponding. Most builtup roof systems are comprised of three layers of felt and asphalt. Mud curling occurs when stagnant water and dirt accumulates in the lower parts of the roof. This month, the nrca repair manual for lowslope membrane roof systems, second edition will be.
Schematic representation of low slope roofing top and my own analysis bottom, from edward allen, how buildings work, 2nd edition. Nrca steep slope roofing manual pdf click here manual. A good value if you are involved with designing membrane roof sys the manual provides roof system configurations that reference uptodate industry standards for materials and methods. Characteristics of membranes and insulations used for lowslope roofs. New low slope roofing manual available this website requires certain cookies to work and uses other cookies to help you have the best experience. For adhered systems, the substrate must be one that is approved by the system supplier. Roof fast, a selfadhered membrane sam system, is a low slope roofing material that combines the polymer chemistry of commercial grade modified bitumen membranes with the selfadhesive characteristics of an ice and water protector and the beauty of a granule surface. 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. Roof failure causes in depth and specific methods for avoiding them. Where deflection from snow or other live loads is a concern, a greater slope will be needed to prevent any ponding.
It is often used to provide slope to the membrane in order to improve drainage. In order to achieve the necessary slope in his design, he must consider the structural framing of the roof, the deck type, the roof membrane specification, roof deflections, and the building layout. Jul 01, 2006 the manual is a widely respected guide to designing, constructing, and maintaining low slope roofing systems. Residential low slope roof repair low slope roof installation. Low slope roofing includes water impermeable, or weatherproof, types of roof membranes installed on slopes less than or equal to 3. Characteristics of membranes and insulations used for low. Topics include roof decks, insulation, various types of membranes. A fully searchable pdf version of this publication is available for free download at. This course identifies the information roofing contractors generally need from roof system designers to provide complete and building codecompliant low slope roof systems.
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. Across canada and the united states, the incorporation of cover boards in low slope roofing applications is common practice. Oneroof onecompany lowslope options brochure for steepslope contractors doc type. Bureau design and application manual for new roof construction. Repair manual for low slope membrane roof systems manuals for inspection and maintenance guides for building owners for more information about this and other nrca programs delivered directly to your company, contact jeff jarvis, nrcas vice president of membership, sales and business development, at 800 3239545, ext.
The nrca roofing and waterproofing manual, fifth edition. Material for this manual has been compiled from various authorities in canada and specialists in the united kingdom. 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. For decades, this manual has been the most widely respected guide to designing, constructing, and maintaining lowslope. Nrca defines low slope roof systems as a category of roofing that. Roofing solutions reference manual for property managers.
Unload, handle, and store all roofing products and construction materials with care. Standard guide for low slope insulated roof membrane assembly. Show changes in roof elevations in a separate sketch. Lowslope selfadhered roof systems are primarily designed for roofs at 212 pitch or less. Nrca roofing norton notch filter pdf anthology notes on excel 2007 pdf of drama shorter ed pdf and waterproofing manual 5th edition hardcover june, 2006. Commercial low slope roofing products asphalt roofing. Minor variations from the application principles may occur between regional speciaists but in no instance should these compromise the integrity of. The nrcas repair manual for low slope membrane roof systems is the perfect guidebook you need to repair all problems associated with low slope. Low slope roofing installation guide by roof repair 101. When applying polyglass sa roof systems, ambient temperatures should be 40f and rising.
Jun 26, 20 low slope roofing systems such as liberty should only be installed on roof slopes of 2 in 12 or higher. Certilast pressureimpregnated preservativetreated shakes or shingles are recommended in low. The repair manual for lowslope membrane roof systems. This unbiased, authoritative reference guide of industry best practices for the repair of low slope membrane roof systems, including thermoplastic and thermoset roof membranes, polymermodified bitumen and builtup roofing, and mechanically attached metal flashings, is your goto reference guide for repairs and maintenance. The nrca roofing and waterproofing manualfifth edition.
The minimum roof slope on which certilabel shakes are recommended is 4. Guidelines for designing lowslope membrane roof systems. Using the protected membrane system for thermal upgrading. Manual of lowslope roof systems mcgrawhill education. Lowslope membrane roof systems building technology. Manual of lowslope roof systems fourth edition building. This site is like a library, use search box in the widget to get ebook that you want.
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