This manual makes an excellent addition to your technical library and is reliable reference material for state roofing contractor licensure exams. It contains the following four volumes: The NRCA Roofing Manual: Membrane Roof Systems—2019; The NRCA Roofing Manual: Architectural Metal Flashing and Condensation and Air Leakage Control—2018. NRCA Roofing Manual - 2019 Boxed Set 5.0 out of 5 stars 3. Only 1 left in stock - order soon. THE NRCA Waterproofing Manual.
The NRCA Roofing Manual: Membrane Roof Systems—2015 was released in March and updates and replaces The NRCA Roofing Manual: Membrane Roof Systems—2011. Other current volumes in The NRCA Roofing Manual include The NRCA Roofing Manual: Metal Panel and SPF Roof Systems—2012; The NRCA Roofing Manual: Steep-slope Roof Systems—2013; and The NRCA Roofing Manual: Architectural Metal Flashing, Condensation and Air Leakage Control, and Reroofing—2014.
The NRCA Roofing Manual is a best-practices guide for roof system installations in North America. NRCA's best practice approach generally is more conservative than building codes' minimum requirements and may be consistent with or more conservative than manufacturers' requirements.
Revised organization
If you have previous volumes of The NRCA Roofing Manual, you will notice the content flow has changed in the new volume. NRCA acknowledges its manuals are not read cover to cover. Consequently, this volume has been reformatted to be used as a reference manual with roofing contractors and roof system designers in mind. Guides for developing roof system specifications are placed in the first chapter where they can easily be located ahead of component-specific information.
Chapter 1—Roof System Configurations provides descriptions of how roof deck substrates, air and vapor retarders, rigid board insulation and roof membrane components are combined to design and construct membrane roof systems. A roof system designer may use this chapter to select a specific roof system application and immediately focus on component selection or compare different roof system configurations to determine the preferred system for a project, for example.
Roof system configurations in the manual are designated by roof membrane type, application method and substrate type. For example, a common re-cover configuration is designated 'Mechanically Attached Thermoplastic Roof System, Existing Roof System.' Chapter 1 provides roof system configurations for re-cover applications alongside new construction and roof system replacement configurations.
Each roof system configuration has a listing of applicable roof system components. For each roof system component, a reference is provided to the section in the manual where more detailed information about the component is located.
For each roof system component, a designer may select from provided material options. The options are designated by common industry names and corresponding ASTM International standard material specifications if available. For instance, high-density polyisocyanurate re-cover insulation board is identified as ASTM C1289, 'Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board,' Type II, Class 4 material.
Moving past the opening chapter, content is arranged similarly to previous volumes. Chapter 2 discusses roof deck materials. Chapter 3 provides considerations for air and vapor retarders installed as part of roof assemblies. Chapter 4 has guidelines for rigid board roof insulation and cover boards. Chapter 5 addresses roof membranes. Chapter 6 has information about fasteners used with membrane roof systems. Chapter 7 discusses roof membrane surfacings. Chapter 8 focuses on prefabricated accessories used with membrane roof systems. Chapter 9 provides guidelines for roof re-cover and replacement. And construction details are found in Chapter 10.
Updated insulation guidelines
Chapter 4—Rigid Board Insulation has a revised discussion of principles and terminology applicable to designing roof systems for thermal resistance. An example roof assembly R-value calculation is included to illustrate the application of these principles.
An updated discussion of tapered roof insulation explains how to comply with International Energy Conservation Code (IECC) provisions applicable to tapered roof insulation. Currently, IECC's 2006, 2009 and 2012 editions serve as the technical basis for energy codes adopted throughout most of the U.S. These model codes provide the same language applicable to determining the minimum tapered roof insulation R-value for code compliance purposes. The wording used to express the code's intent has caused confusion in the industry. Although IECC 2015 provides different wording, the code's intent remains unchanged. The revised manual text provides an explanation.
Material-specific recommendations regarding rigid board insulation products have been revised, and information about insulation materials not addressed in the previous edition of this volume also has been added.
This revision introduces information about asphalt core board and cement board and brings back composite board insulation information last included in The NRCA Roofing and Waterproofing Manual, Fifth Edition.
Asphalt core board has been used as a cover board over primary insulation and as a separation board in re-cover applications with polymer-modified bitumen roof membranes in Canada for a number of years. Recently, it was introduced to the U.S. market. According to manufacturers, polymer-modified bitumen sheets may be torched directly to asphalt core board.
Cement board, recently introduced to the U.S. roofing industry, is manufactured to comply with ASTM C1325, 'Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units,' Type A sheets intended for exterior applications. This material is intended for use as a thermal barrier to provide fire resistance over steel roof decks and combustible substrates, substrates for air and vapor retarders, and cover boards beneath roof membranes.
Types of roof insulation materials also addressed in Chapter 4 are cellular glass, expanded polystyrene, extruded polystyrene, glass-faced gypsum, fiber-reinforced gypsum, stone wool, perlite, polyisocyanurate, high-density polyisocyanurate and wood fiberboard.
Because adoption of updated energy codes has driven an increase of insulation thickness in membrane roof assemblies, in this volume, NRCA has revised its recommendation for maximum polyisocyanurate insulation board thickness. NRCA now recommends roof system designers specify polyisocyanurate board insulation be installed in multiple layers with a 2.6-inch maximum board thickness.
Hot-applied asphalt
Nrca Roofing Manual Online
NRCA updated its recommendations for hot-applied asphalt. This follows a significant revision to ASTM D312, 'Standard Specification for Asphalt Used in Roofing.' The standard's revision, approved in December 2014 and designated ASTM D312-15, addressed NRCA's concerns with hot-applied built-up roof systems' viability in North America.
NRCA now recommends suppliers and installers of hot-applied asphalt roofing materials specify roofing asphalt that complies with ASTM D312-15.
For a detailed discussion of the updated standard, see 'An updated standard,' February 2015 issue, page 12.
More on single-ply membranes
In Section 5.4—Single-ply Roof Membranes, discussion of adhered membranes was expanded to address the available application methods such as adhering sheets with solvent-borne adhesives, water-based adhesives, foam adhesives and self-adhering sheets.
Also, roof system configurations using self-adhering thermoplastic sheets were added in Chapter 1. Self-adhering single-ply roof systems are an option to consider when a project requires an adhered thermoplastic roof membrane and liquid-applied adhesive applications are problematic because of limitations regarding the use of liquid-based adhesives.
The effects of air intrusion on design and installation of mechanically attached single-ply roof systems specifically are addressed in the single-ply section. Related recommendations for additional membrane securement were added to the Chapter 10—Construction Details introduction.
Other new information
Information about model code requirements for rooftop pipe supports was added to Chapter 8—Roof Accessories. Roofing contractors may be responsible for installing pipe support systems in reroofing scenarios.
An updated Chapter 9—Reroofing includes roof re-covering as well as roof system replacement considerations. Chapter 9—Roof Re-covering in the 2011 volume specifically addressed re-cover applications. The current chapter was assembled by combining the re-cover guidelines with membrane roof system replacement guidelines originally provided in The NRCA Roofing Manual: Architectural Metal Flashing, Condensation and Air Leakage Control, and Reroofing—2014.
Two new appendices round out the major additions in the new volume. Appendix 1—Wind Uplift is a primer on wind-uplift resistance design for roof assemblies in accordance with International Building Code provisions. Appendix 2 provides NRCA's guidelines for installation of rooftop photovoltaic components over low-slope membrane roof systems.
A good value
If you are involved with designing membrane roof systems, using the updated manual can offer a number of advantages.
The manual provides roof system configurations that reference up-to-date industry standards for materials and methods. Also, guidelines for complying with code requirements are based on provisions in the 2015 editions of the I-Code family of model codes and current editions of other codes commonly adopted by U.S. jurisdictions.
When you work with a manufacturer's specifications, the roof system configurations can help verify the specifications are complete and current. For instance, an architect unfamiliar with a manufacturer's specification can compare it with a corresponding configuration in the manual to see whether the specification adheres to best industry practices.
NRCA guidelines regarding specific components may help you address client questions about project specifications when, for example, a designer proposes an enhancement to an existing specification.
A necessary resource
NRCA continues to provide valuable technical information to roofing professionals. For more resources and technical manuals, visit shop.nrca.net.
Maciek Rupar is an NRCA director of technical services.
New ways of access
For the first time, The NRCA Roofing Manual: Membrane Roof Systems—2015 is available on Apple, Android and Windows tablets and for download from NRCA's online bookstore, shop.nrca.net.
The app version and online PDF are the new primary delivery formats for The NRCA Roofing Manual and jointly replace The NRCA Roofing Manual CD, which has been discontinued. The NRCA Roofing Manual: Membrane Roof Systems—2015 also is available in hard copy.
NRCA provides free access to the new manual to NRCA member companies and their employees. To access the app's content, a user will need his or her username and password for NRCA's website. To register for an account, go to www.nrca.net/account/register.
In addition, NRCA has made available its most-popular newsletters and publications in the app for free to members.
NRCA members also receive free electronic access to all NRCA publications in the NRCA bookstore, including the new manual. Members can download the manual as a PDF at shop.nrca.net.
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NRCA customized educational programs
Through its customized educational offerings, NRCA can meet any training need. Live lectures, demonstrations and Web-based instruction can be used to tailor an interactive learning program to meet your company's needs. Benefits of NRCA's customized educational programs include the following:- Customized training: Programs are developed to meet your specific needs, concerns and budget.
- Convenience: Training can take place at your company's office or another suitable location of your choice.
- Economy: Costs are reduced substantially when groups of employees participate in the same training.
- Quality instruction: All programs are led by professionals selected for their experience and expertise in the subject.
- Attention to detail: Logistics and materials are handled expertly by NRCA.
NRF accepts applications for disaster relief
The National Roofing Foundation's (NRF's) Disaster Relief Task Force currently is accepting applications for disaster aid through its Disaster Relief Fund. The task force will make its final decision for aid allocation during the week of Feb. 12 though urgent requests will be considered on a case-by-case basis before that date.Aid will be provided to applicants in the following two categories.
Category 1—Helping our own: Those who work in the roofing industry (contractors, roofing workers, architects, consultants, etc.) and suffered damages because of Hurricanes Katrina or Rita are eligible to apply. NRCA membership is not required. Some examples of applicant needs include uninsured losses, insurance deductible, new appliances and temporary housing expenses.
Category 2—Helping the community: Those who own a home or building in need of roof system repair or replacement because of Hurricanes Katrina or Rita are eligible to apply. Some examples of the types of projects that will be considered include churches, youth homes, activity centers, schools and homes belonging to low-income or disabled families.
To apply for disaster aid, submit an application form to NRF Disaster Relief Fund, Attn.: Jacki Golike, 10255 W. Higgins Road, Suite 600, Rosemont, IL 60018; fax (847) 299-1183; e-mail jgolike@nrca.net. Grant applications are available on NRCA's Web site, www.nrca.net, by viewing 'Quick Links' and clicking on 'Disaster Relief Fund.'
If you have questions about NRF's Disaster Relief Fund, contact Golike, NRCA's associate executive director of operations, at (800) 299-9070, Ext. 7582, or e-mail jgolike@nrca.net.
New products
2006-07 Low-slope Roofing Materials Guide
NRCA's two-volume 2006-07 Low-slope Roofing Materials Guide is a comprehensive report that addresses commercial, industrial and institutional low-slope roof coverings, rigid insulation board, fasteners, and cements and coating products currently available in the U.S. It also provides information about warranties offered for most membrane roof systems and detailed descriptions of manufacturers' roofing materials, including product names, types, specifications and characteristics.The NRCA Architectural Sheet Metal and Metal Roofing Manual, 2006 Edition
This manual has the latest information about architectural sheet metal and metal roofing and examines substrates, underlayments, vapor retarders, insulation and ventilation, and design and application information for low- and steep-slope metal panel roof systems. It has been revised to include NRCA's 390-page interim update completed in January 2006 and 56-page interim update completed in November 2003. It also covers ASTM International standards, FM Global and Underwriters' Laboratories considerations, and reroofing. In addition, it features architectural and structural metal details and all the information about metal roofing from The NRCA Roofing and Waterproofing Manual, Fifth Edition, as well as a glossary of terms, in an easy-to-use format.The NRCA Spray Polyurethane Foam-based Roofing Manual, 2006 Edition
This manual contains the latest information about spray polyurethane foam- (SPF-) based roof systems and explains materials, design considerations and application techniques. It has been revised to include NRCA's 390-page interim update completed in January 2006 and 56-page interim update completed in November 2003. Also included are specification plates and details, all the information about SPF-based roofing from The NRCA Roofing and Waterproofing Manual, Fifth Edition, and a glossary of terms in an easy-to-use format.Nrca Roofing Manual Pdf
NRCA Construction Details on CD-ROM includes 2006 updates
Updated in 2006, this CD-ROM allows the use of construction details contained in
The NRCA Roofing and Waterproofing Manual, Fifth EditionNrca Roofing Manual Cdl
, withAuto-CAD® software. There are 450 roofing construction details in isometric and section views, including new steep-slope and sheet-metal details, in conjunction with Auto-CAD® software to customize plans to fit your specific project needs. NRCA Construction Details on CD-ROM including 2006 updates is best used with The NRCA Roofing and Waterproofing Manual, Fifth Edition. It is not compatible with Macintosh systems.Online resources
NRCA's Web site, www.nrca.net, offers a multitude of resources and benefits. Following are ways to explore the NRCA online community:- Discuss roofing industry issues and events with fellow roofing professionals at NRCA's discussion forum: www.nrca.net/member/discussionforum/defalt.aspx.
- Register to receive NRCA's E-news, a weekly electronic newsletter, by registering for the Web site: www.nrca.net/register.aspx.
- Members can join NRCA's listserv, an e-mail-based discussion group where roofing professionals can discuss industry issues with many of their peers at the same time: www.nrca.net/member/listserv/default.aspx.
- View or post classified advertisements, services, equipment, business opportunities and materials: www.nrca.net/consumer/about/advertising/classifieds/default/default.aspx.
- Explore job opportunities and let potential employers know about your availability by posting a free advertisement through NRCA's 'Jobs Wanted' classified advertising section: www.nrca.net/rp/industry/careers/jobop.aspx.
- Shop online for publications, videos and programs at NRCA's online store, Shop NRCA: shop.nrca.net.
- Search for member contractors, manufacturers, etc., with NRCA's online membership directory: www.nrca.net/rp/directory/.
- Check out NRCA's year-round educational programs and events: www.nrca.net/rp/education/.
- NRCA members can peruse the Members Only section, which features access to the discussion forum, listserv and Special Reports, among other features: www.nrca.net/member/membersonly.aspx.
Upcoming NRCA events
February
2
OSHA-sponsored Train-the-Trainer Safety Program
Daytona Beach, Fla.
Contact: Michelle Biesiada
(847) 299-9070, Ext. 7534
A free class providing information about establishing a safety program
3
OSHA-sponsored Train-the-Trainer Safety Program
San Juan, Puerto Rico
Contact: Michelle Biesiada
(847) 299-9070, Ext. 7534
A free class providing information about establishing a safety program
13-16
NRCA's 119th Annual Convention
Las Vegas
Contact: Michelle Iniguez
(847) 299-9070, Ext. 7539
NRCA's annual convention in conjunction with Hanley Wood's 2006 International Roofing Expo
13
CERTA Train the Trainer
Las Vegas
Contact: Janice Davis
(847) 299-9070, Ext. 7505
Become certified to train workers in proper torching applications
March
1
OSHA-sponsored Train-the-Trainer Safety Program
Buffalo, N.Y.
Contact: Michelle Biesiada
(847) 299-9070, Ext. 7534
A free class providing information about establishing a safety program
14
Ask the Expert—SpecRight: Taking the lead on energy-efficient roof system design
Online
Contact: Janice Davis
(847) 299-9070, Ext. 7505
Learn about how to design and install energy-efficient roof systems
31
Maximizing the Life of Your Roof: Implementing a Roof Asset Management Program
Orlando, Fla.
Contact: Janice Davis
(847) 299-9070, Ext. 7505
Learn the proper procedures to best manage your roofing assets
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