SPRI is a collection of commercial roofing industry experts dedicated to providing an open forum for discussion, education and innovation. We provide ongoing resources and expertise for contractors, architects and building owners. We are the leading authority in single-ply roofing. Our network deals exclusively with thermosets, thermoplastics and modified bitumens.

Here, you’ll find easy access to online publications and documents that range from generic technical guidelines for design and application to general information about roof maintenance and emergency repair.

Visit our website.

SPRI names new President!

SPRI has named Brian Chamberlain as President for the 2026–2027 term, bringing nearly four decades of experience with Carlisle Construction Materials and a deep history of leadership within the organization. During his tenure, he will focus on advancing industry standards, expanding education, navigating regulatory issues and integrating emerging technologies such as AI. Chamberlain succeeds Scott Carpenter, whose term emphasized strategic planning, advocacy and member engagement. SPRI, which represents suppliers to the commercial single-ply roofing sector, expects continued progress in technical excellence and industry collaboration under Chamberlain’s leadership.

Learn more here.

Roofing Day in D.C. 2025 recap

• SPRI members have facilities in 39* states across 123* districts
• 4,301,605,154 shipped square feet of membrane material (EPDM, TPO, PVC, PVC-KEE, SBS and APP)
  • Shipped square feet would cover the National Mall Area 320 times!
• $8.6+* billion – Total installation value
  • $296,848,797* – Accessories
  • $3,490,087,963* – Labor
  • $4,854,544,096* – Material value

*2024 inflation adjusted costs estimates from RS Means data by the The Gordian Group + our own shipping data

Directory of Roof Assemblies (DORA) 

How does DORA work?

DORA works through the voluntary participation of industry companies. All roof assemblies are submitted by participating companies and are accompanied by supporting documentation in the form of test reports and qualified evaluations.

DORA accepts supporting documentation from any qualified accredited laboratory or certification body. All supporting documentation is independently validated before entering DORA. All roof assembly submissions are reviewed and independently verified by the Program Administrator before being published to the website.

DORA is sponsored by SPRI and administered by Intertek.

Why should you use DORA?

• Steel, concrete, wood, cementitious fiber, gypsum and panelized concrete roof decks
• Latest advancements in intuitive searching techniques to find assemblies meeting your specific design criteria
• Robust project management and collaboration tools
• Saved searches and optional email notifications for new assemblies meeting your specifications
• No erroneous assemblies or products
• Mobile-friendly
• Free to public

Learn more.

Who is SPRI?

Regular Members manufacture or market flexible sheet membrane roofing systems; but not including independent manufacturers’ representatives or distributors.

Associate Members manufacture and market, or simply market, raw materials, components, accessories, tools or equipment used in flexible sheet membrane roofing systems.

Affiliate Members are professional roof consultants, architectural firms, specifiers, product distributors, sales representatives, testing agencies and research agencies.

Become a member today!

Wind Design Calculator

This Wind Design Calculator is used to calculate the roof edge design pressure.

All versions of International Building Code since 2003 have required per Section 1504.5 that metal edge systems, except gutters, be tested per ANSI/SPRI ES-1 or ANSI/SPRI/FM 4435/ES-1 to resist wind loads in accordance with Chapter 16. The 2021 version of IBC will also require some gutters to be tested per ANSI/SPRI GT-1.

This calculator is based on ASCE 7 as prescribed by IBC Chapter 16, and can be used to calculate the design loads that edge metal systems must be tested to resist.

Learn more.

Resources 

Our resources include:

• Codes and FM approvals 
• Moisture and condensation 
• Application guidelines and details 
• Adhesives and fastners 
• Education 

See more resources.

Latest Canada Content

NRCA encourages roofing professionals to complete latest Quarterly Market Index Survey for Reroofing

The survey is an industrywide effort to collect information about the reroofing market spearheaded by a coalition of trade associations. The National Roofing Contractors Association encourages roofing professionals to join industry trade associations representing contractors, consultants and manufacturers in the U.S. and Canada in taking part in the latest Quarterly Market ...
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Latest Podcasts

McKay Daniels & Brain Pallasch - Market Signals Across the Roofing Industry

In this episode of Roofing Road Trips®, host Heidi J. Ellsworth sits down with industry leaders to unpack the latest findings from the Market Index Survey for Reroofing. Created and maintained by a coalition of industry trade associations representing contractors, consultants and manufacturers in the U.S. and Canada, the Market ...
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Chadwick Collins - SPRI, DORA and the Future of Commercial Roofing

In this episode of Roofing Road Trips®, Heidi J. Ellsworth sits down with Chadwick Collins, technical director of SPRI, to talk about SPRI’s role in roofing standards, the value of the DORA Directory and key insights from the recent SPRI Spring Event. Together explore how the organization’s website and the ...
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Scott Carpenter - Strengthen Your Knowledge with a SPRI Membership

S6:E14 In this episode of Roofing Road Trips, Heidi J. Ellsworth is joined by Single Ply Roofing Institue (SPRI) President Scott Carpenter to learn what it means to be part of this community dedicated to providing an open forum for culture, improvement and evolution in the roofing industry. Listen to learn ...
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Latest Webinars

Coffee Conversations - Get Ready for Roofing Day 2022

S3:E13 RoofersCoffeeShop hosts an important conversation about what to expect from Roofing Day in D.C. 2022. Heidi J. Ellsworth talks with The Honorable Reid Ribble and Deborah Mazol from NRCA, Randy Ober from SPRI and Sherri Miles of Miles Roofing Inc. about this year’s in-person visit to our nation’s capital ...
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Latest Classifieds

Simplify Your Roofing Research with DORA

Directory of Roof Assemblies (DORA) is a free, web-based directory that helps architects, roof consultants, contractors and building owners quickly find third-party tested roof assemblies. Within DORA, users can search and compare roofing assemblies by deck type, membrane, insulation, attachment method, manufacturer and performance criteria such as wind uplift ratings. Each ...
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Latest Videos

The Weekly Blend - Episode 145

Join us every Friday to learn the latest news in the roofing, metal and coatings industry. The 145th episode of The Weekly Blend is live! Join the Coffee Shops’ President Heidi J. Ellsworth and COO Karen Edwards for the latest episode of this Coffee Shop original web series. This week, Heidi discusses ...
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