Cofair is a manufacturer and distributor of self-adhesive building, roofing, and industrial waterproofing and repair products.
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 home Cofair Products Inc.
Deck Flash™ Barrier
NEW Quick Roof Ultra Bond
EPDM Quick Roof
Cover 'N Coat™
Butyl Hurricane Tarp Tape
Quick Roof
QuickRoof™ Double White
Peel and Seal™
SB60™ Shingle Underlayment
Wind and Water Guard™ Underlayment for use under all roofing materials including metal roofs.
Roof Deck Seam Tape
Gutter Seal Patches - Gutter Liner
Gutter Seal Building materials roofing supplies mobile home repair
Window and Door Flashing
Tite-Seal™ Self-Adhesive Foam Threshold Sealer
Tite-Seal™ for Doors, Windows Skylights, Sheathing Panels
Tite-Seal™ Flex for Arched Windows and Sills
Tite-Seal™ Butyl new super agressive OSB formula, install down to 0°F
Deck Flash Barrier Building materials roofing supplies mobile home repair
RV Roof Repairs

Quick Roof™ Extreme For RV's

White Quick Roof™ for RV's & Mobile Homes

Quick Roofs™ for Rubber Roofs

Rubber Roof Emergency Patch Kit

Re-Roofing Building materials roofing supplies mobile home repair
Decks and Driveway
Post Seal™
Deck Flash Barrier™

Driveway Medic Asphalt Repair Fabric

Re-Roofing Building materials roofing supplies mobile home repair
Fleet Maintenance
Trailer Medic™
5 Minute Emergency Hose Repair Kit for Auto, Truck, RV, and Marine
Tite Seal Hydraulic Hose Protector™
Re-Roofing Building materials roofing supplies mobile home repair
Pond LIners Tapes
Tite Seal ™ EPDM Pond Liner

Deck Flash™ Barrier

(Click here to purchase Deck Flash
Barrier from an online Retailer)



When applied to the top of deck joists, Deck Flash Barrier creates a waterproof membrane that prevents wood rot and decay caused by the accumulation of water under the decking boards. Deck Flash Barrier’s unique asphalt mastic adhesive self-seals around screws and nails, blocking a primary pathway for water infiltration into deck joists. By blocking moisture and preventing wood rot, Deck Flash Barrier maximizes the life of your new deck.


When Deck Flash Barrier is placed between ACQ, CA-B, or ACZA treated lumber and metal surfaces, such as galvanized metal and aluminum, it creates a physical barrier that prevents the corrosion of the metal surface caused by contact with the chemicals in treated lumber. It can be used to protect metal flashings and hangars, at deck plates and sill plates, and anywhere treated lumber is used.


All surfaces to receive Deck Flash Barrier must be clean, dry, and free from oil, grease, and debris. If proper adhesion is not being achieved, Deck Flash Barrier can be attached mechanically with fasteners. Deck Flash Barrier should be applied when temperatures are 45° F or warmer. In colder temperatures, or for difficult applications, a construction grade spray adhesive may be used to improve adhesion.


Cut Deck Flash Barrier to the proper length. When apply-ing to deck joists, center over joist. Remove release paper and press in place. Firmly crease and fold Deck Flash Barrier material over both sides of the joist. To increase adhesion, roll with a small hand roller. When being used as an ACQ barrier, Deck Flash Barrier can be applied either to the wood or metal surface. When over-lapping material end to end, a minimum two inch overlap is required. When overlapping side to side, a one inch overlap is required.


  1. Deck Flash barrier may be slippery. Do not stand or walk on Deck Flash Barrier during installation.
  2. When screwing or nailing through Deck Flash Barrier into treated lumber, it is still necessary to use approved fasteners.
  3. Because of the possibility of a slight odor from Deck Flash Barrier's asphalt mastic adhesive, do not install where the product is directly exposed to interior living spaces.
  4. Deck Flash Barrier is designed to be covered, and should not be left permanently exposed to direct sunlight.

LIMITED WARRANTY: Co-Fair warrants this product to be of merchantable quality when used and/or applied in accordance with instructions hereon. Co-Fair does not warrant this product for any purpose or use other than the general purpose for which it is intended. Liability under this warranty is limited to the replacement of defective product as purchased. THIS LIMITED WARRANTY IS ISSUED IN LIEU OF ALL OTHER EXPRESSED AND IMPLIED WARRANTIES, INCLUDING THE WARRANTY OF FITNESS, AND EXPRESSLY EXCLUDES LIABILITY FOR CONSEQUENTIAL DAMAGES.


Cofair Products Inc.
7301 N. St. Louis Ave. Skokie, IL 60076
Phone 847-626-1500 • FAX 847-626-4900

Roofing and Waterpoof Repairs Asphalt DrivewayGutter RepairsRV & MobileWindow InstallationDeckCatalog SheetsMSDS InfoContact Us