Fasteners are integral to deck integrity, aesthetics

f, cconntuc ro rHE North Amerill.can Deck & Rail Association, deck failures and the resulting injuries nationwide are increasing due to factors such as the faulty work of inexperienced builders, poor maintenance, and the fact that 40 million decks in the U.S. are over 20 years old.

Another problem is that professional builders and do-it-yourselfers commonly skimp on fasteners after spending freely on low-maintenance composite and PVC decking, tropical hardwoods like ip6, pressure treated products, cedar or redwood. The reality is that the selection of fasteners is as important to the structural integrity and long-term durability ofthe deck as the specification of deck boards. If chosen properly, fasteners should outlast the lifespan of a deck. Deck boards that creak or experience play when walked upon are frequently the result of fasteners that were either poorly matched to the decking material or selected on price alone.

Subsequently, fasteners should be considered according to the type and amount of thread, coating, heat treatment, and depth of recess, which will vary in relation to deck board materials. Face screwing also remains one of the most effective methods for securing a deck of any kind.

Pressure treated d.ecking. To withstand the rigors of intense and changing environments, pressure treated lumber is protected by chemicals to resist challenges ranging from acidic climates and insects to microorganisms and fungal decay. Alkaline copper quaternary (ACQ) and copper azole (CA) are among the most common forms of chemicals used for extending the longevity of lumber to 20 years or more.

But. due to the superior corrosive properties of these chemicals, standard steel fasteners have been shown to corrode up to five times faster when inserted into treated materials. As a result, fasteners that are either AQCcompatible or manufactured with 305 stainless steel should be strongly considered for use with chemically-treated materials. That's because the high nickel content of the 305 stainless steel screws delivers superior corrosion resistance in all wood applications that are exposed to weather, high moisture, and other caustic conditions, while eliminating the discoloration and staining that can occur around the screw heads of other products.

Composite or PVC, Available as AQC-compatible or in stainless steel, composite deck screws are specially designed to eliminate mushrooming and blemishes in applications using composite and plastic materials. They are also an excellent choice for wood decks, where the top threads work to pull down and hold warped lumber and lock the boards together. Many times approved for use with their products by decking manufacturers, these screws are also commonly coated to match the color of leading types of decking boards, fascia, fencing and railings.

In conclusion, never underestimate the importance of proper fasteners and fastening in ensuring the long-term structural integrity and beauty of decks designed at any price point. When in doubt, just reach out to the reliable, leading manufacturers of fastener products for the latest details, insights and information.

- Jim Miller is president and c.e.o. of Screw Products, Inc., Gig Harbor, Wa. Reach him at (877) 844-8880 or via www.sc rew -Droduc s.com.

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