SPRI Releases Retrofit Drain Standard and Plans to Canvass ANSI/SPRI IA-1

SPRI, the association representing sheet membrane and component suppliers to the commercial roofing industry, announced that its ANSI/SPRI RD-1 “Performance Standard for Retrofit Drains” document has been revised and reaffirmed as an American National Standard. 

ANSI/SPRI RD-1 is a reference for those who design, specify or install retrofit roof drains, which are designed for installation in existing drain plumbing on existing roofs. This standard does not include consideration of all roof storm water drainage code requirements for specific building sites. 

SPRI developed the ANSI/SPRI RD-1 standard for use by architects, engineers, consultants, roofing contractors and property owners of low-slope roofing systems in 2004, and it was last revised and re-approved as an ANSI standard in 2014. The standard is now available for download at no cost at www.spri.org

In addition, SPRI announced that it is reviewing ANSI/SPRI IA-1 “Standard Field Test Procedure for Determining the Mechanical Uplift Resistance of Insulation Adhesives over Various Substrates” and plans to canvass the document for re-affirmation as an American National Standard in the coming months. 

This standard specifies a field-testing procedure to determine the mechanical uplift resistance of specific roof insulation/adhesive combinations. The testing procedure, which encompasses 

various types of adhesives, substrates and insulations, was first approved as a national standard in 2005 and again in 2010 and 2014. 

IA-1 is being re-canvassed as required by the American National Standards Institute’s policy that all National Standards must be re-evaluated every five years. Interested party may participate in the canvass process by e-mailing SPRI’s headquarters at info@spri.org or by calling 781-647-7026.

SPRI Revises Wind Design Standard Practice for Roofing Assemblies for Inclusion in the International Building Code

SPRI has revised ANSI/SPRI WD-1, Wind Design Standard Practice for Roofing Assemblies, to prepare the document for submission to and inclusion into the International Building Code (IBC). SPRI represents sheet membrane and component suppliers to the commercial roofing industry.

This Wind Design Standard Practice provides general building design considerations, as well as a methodology for selecting an appropriate roofing system assembly to meet the rooftop design wind uplift pressures calculated in accordance with ASCE 7, Minimum Design Loads for Buildings and Other Structures.

“Revisions to ANSI/SPRI WD-1 include additional insulation fastening patterns, along with more detailed practical examples,” says Task Force Chairman Joe Malpezzi. “This Standard Practice is appropriate for non-ballasted Built-Up, Modified Bitumen, and Single-Ply roofing system assemblies installed over any type of roof deck.”

In addition, SPRI has revised and reaffirmed ANSI/SPRI RD-1, Performance Standard for Retrofit Drains, in compliance with ANSI’s five-year cycle requirements. This standard is a reference for those that design, specify or install retrofit roof drains designed for installation in existing drain plumbing on existing roofs.

“It is important to note that the RD-1 Standard addresses the design of retrofit primary drains,” says SPRI President Stan Choiniere. “Local codes may also require secondary or overflow drains. SPRI will also be revisiting this standard after upcoming code changes are released.”

For more information about these standards and to download a copy, visit SPRI’s Web site or contact the association.