EPDM Guide for Designers - firestonebpco.com

1 EPDM Guide for Designers RubberGard EPDM, RubberGard EPDM Pre-Taped, RubberGard MAX EPDM, RubberGard EPDM , FullForce EPDM November 2021 2 Firestone Building Products EPDM Guide for Designers Interim Updates at 11/12/2021 Table of Contents I. GENERAL DESIGN CRITERIA .. 5 A. Applicability .. 5 B. Consultation .. 7 C. 7 D. Warranty .. 7 II. QUALITY ASSURANCE .. 9 A. Jobsite Considerations .. 9 B. Asphalt Products .. 9 C. Phased Construction/Temporary Roofing .. 10 III. VAPOR RETARDERS/AIR BARRIERS .. 11 A. Vapor Retarders .. 11 B. Air Barriers .. 13 C. Sloped Roofs Asphalt Vapor Retarder or Air Barrier Attachment.

2 13 D. Insulation Stops and Back-nailing Nailing Strips .. 14 E. Back-nailing Modified Asphalt Base and Cap Sheets .. 14 F. Back-nailing Type IV and Type VI Fiberglass Roofing Plies .. 15 G. Cap Nails .. 15 IV. SUBSTRATES AND SUBSTRATE REQUIREMENTS .. 16 A. General .. 16 B. Fastener Pullout/Adhesive Requirements .. 16 C. Moisture Considerations .. 17 D. Drainage and Slope .. 18 E. Wood Nailers .. 18 F. Expansion Joints .. 19 V. FASTENERS .. 19 A. General .. 19 VI. DECKS .. 23 A. General .. 23 B. Classification .. 24 C. Steel Decks .. 24 D. Structural Concrete Roof Decks .. 25 E. Wood Decks: Plywood, OSB, and Wood Plank .. 26 F.

3 Cementitious Wood Fiber Decks .. 27 G. Gypsum Roof Decks .. 28 3 Firestone Building Products EPDM Guide for Designers Interim Updates at 11/12/2021 H. Lightweight Insulating Concrete Roof 28 I. Special Considerations for Partial Tear Off, and Retrofit/Recover Applications .. 29 J. Partial Tear Off .. 30 K. Retrofit/Recover Applications Platinum systems require complete tear-off .. 31 L. Preparation of Existing Gravel, Smooth, and Granule-surfaced Asphalt Membranes .. 31 VII. BASE SHEET .. 32 A. GENERAL .. 32 VIII. INSULATION .. 33 A. General .. 33 B. Attachment .. 34 C. Multiple Layers of Insulation .. 35 D. Mechanical Attachment of Insulation and Cover Board to Approved Substrates.

4 35 E. Minimum Number of Fasteners and Plates per Insulation Board .. 36 F. Asphalt Attachment of Insulation/Cover Board to Substrate .. 38 G. Adhesive Attachment of Insulation /Cover Board to Substrate .. 39 IX. ROOF MEMBRANE .. 40 A. Membrane Securement Options for EPDM Membrane Systems .. 40 B. Adhered Systems .. 41 C. Ballasted Systems .. 42 D. Mechanically Attached Systems .. 43 X. FLASHINGS .. 45 A. Design considerations .. 45 B. Wall/Curb Flashing Materials and Requirements .. 45 C. Penetrations (Pipes, Conduits, Etc.) .. 46 D. Penetration Pockets .. 46 E. Curbs and Terminations .. 47 F. Sheet Metal Work .. 47 XI. WALKWAYS.

5 48 A. Locations .. 48 B. Walkway material .. 48 XII. ROOF COATINGS .. 48 A. General .. 48 XIII. WARRANTY .. 49 A. General .. 49 4 Firestone Building Products EPDM Guide for Designers Interim Updates at 11/12/2021 LIST OF TABLES Table I-1: Chart of Roofing System Applicability: RubberGard EPDM Membranes .. 6 Table III-1: Back-Nailing Requirements for Sloped Roofs .. 13 Table IV-1: Minimum Fastener Pullout Resistances for Specific Systems .. 16 Table IV-2: Recommended Number of Pull-Out Tests .. 17 Table V-1: Allowable Fastener and Substrate Configurations .. 20 Table V-2: Acceptable Fastener Uses .. 21 Table V-3: Acceptable Plate Uses.

6 22 Table V-4: Acceptable Fastener Uses for Batten and Termination Bars .. 23 Table VI-1: Structural Deck Classification .. 24 Table VI-2: Acceptable Fasteners for Steel 25 Table VI-3: Acceptable Insulation Adhesives for Insulation Attachment to Steel Decks .. 25 Table VI-4: EPDM Adhesion/Attachment to Structural Concrete Roof Decks .. 26 Table VI-5: Acceptable Fasteners for Concrete Roof Decks .. 26 Table VI-6: Acceptable Insulation Adhesives for Insulation Attachment to Structural Concrete Roof Decks .. 26 Table VI-7: Acceptable Fasteners for Plywood and OSB Roof Decks .. 27 Table VI-8: Acceptable Insulation Securement Options, Adhesives for Insulation Attachment to Plywood and OSB Roof Decks.

7 27 Table VI-9: EPDM Adhesion/Attachment to Wood Roof Decks .. 27 Table VI-10: Acceptable Fasteners for Cementitious Wood Fiber Decks .. 28 Table VI-11: Acceptable Insulation Securement Options, Adhesives for Insulation Attachment to Cementitious Wood Fiber Decks .. 28 Table VI-12: Acceptable Fasteners for Gypsum Roof Decks .. 28 Table VI-13: Acceptable Insulation Securement Options Adhesives for Insulation Attachment to Gypsum Roof Decks .. 28 Table VI-14 EPDM Adhesion/Attachment to Lightweight Insulating Concrete Roof Decks .. 29 Table VI-15: Acceptable Fasteners for Lightweight Insulating Concrete Roof Decks .. 29 Table VI-16: Special Considerations for Partial Tear Off, and Retrofit/Recover Applications.

8 30 Table VII-1: Allowable Base Sheet Attachments .. 33 Table VIII-1: Insulation/Cover Board Attachment Options by Deck and Recover/Retrofit .. 34 Table VIII-2: Insulation/Cover Board Attachment to Insulation Options by Insulation Type .. 35 Table VIII-3: Chart of Insulation Attachment Options (Mechanical Attachment) .. 36 Table VIII-4: Minimum Number of Fasteners and Plates per Insulation Board .. 37 Table VIII-5: Minimum Fastener Pullout Resistances for Specific Systems .. 38 Table VIII-6: Approved Substrates for use with Asphalt Attachment of Insulation /Cover Board .. 38 Table VIII-7: Allowable Adhesive Attachment of Insulation/Cover Board to Structural Deck.

9 39 Table VIII-8: Allowable Adhesive Attachment of Insulation/Cover Board to Base Layer of Insulation .. 40 Table VIII-9: Allowable Adhesive Attachment of Insulation/Cover Board to Retrofit/Recover .. 40 Table IX-1: Approved Immediate Insulation Substrates for EPDM Membranes Up to and Including 25-Year Warranties .. 41 Table IX-2: Approved Immediate Deck Substrates for EPDM Membranes Up to and Including 20-Year Warranties .. 41 Table IX-3: Adhesives for EPDM Membranes to Approved Substrates .. 41 Table IX-5: Chart of Minimum Coverage Requirements for Various Ballast Gradations .. 42 Table IX-6: Chart of Fastening Rates .. 44 Table X-1: Wall/Curb Flashing Materials and Requirements.

10 46 Table X-2: Wall/Curb Flashing Requirements .. 46 Table XIII-1: Warranty Length by Membrane System .. 49 Table XIII-2: Acceptable Insulations for EPDM Membranes: 5-,10-,15-Year Warranty .. 50 Table XIII-3: Acceptable Insulations for EPDM Membranes: 20-Year Warranty .. 50 Table XIII-4: Acceptable Insulations for EPDM Membranes: 25-Year Warranty .. 50 Table XIII-5: Firestone Available Warranty Summary .. 51 5 Firestone Building Products EPDM Guide for Designers Interim Updates at 11/12/2021 I. General Design Criteria A. Applicability 1. Parameters of this manual outline the minimum requirements for the Firestone Red Shield Warranty, including RubberGard , EcoWhite , and FullForce EPDM Roofing Systems.