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Best Deck Fastener Hardware to Fight Corrosion

When selecting deck hardware, corrosion resistance from the exterior environment is required. Hot-dipped, galvanized fasteners are quite popular, as they provide corrosion resistance at a reasonable price. However, be cautious in using galvanized products with lumber, such as cedar or redwood, as a chemical reaction with the resins in the wood causes black streaking. Stainless steel or proprietary coatings over steel are options for avoiding this condition.

Another consideration is to avoid contact of dissimilar metals. When differing metals are in contact in a wet environment, electrons are transferred between the metals resulting in corrosion. Copper content in most mainstream preservative treatments can create corrosion in hardware and fasteners if not carefully selected. Hot-dipped, galvanized stainless steel or tested, proprietary-coated products must be used when adjacent to this lumber. Beyond this, it is also important for the hardware and fasteners that work together to be of the same material or otherwise not in contact.

Scab onto the joist.
Scab onto the joist.

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Create a free account and get instant & exclusive access to all that Decks.com has to offer:

Checkmark 1,000+ How-To articles
Checkmark 80+ Free Deck Plans
Checkmark Deck Planning Calculators
Checkmark Free & Simple Deck Design Tool
Deck Hardware

Best Deck Fastener Hardware to Fight Corrosion

When selecting deck hardware, corrosion resistance from the exterior environment is required. Hot-dipped, galvanized fasteners are quite popular, as they provide corrosion resistance at a reasonable price. However, be cautious in using galvanized products with lumber, such as cedar or redwood, as a chemical reaction with the resins in the wood causes black streaking. Stainless steel or proprietary coatings over steel are options for avoiding this condition.

Another consideration is to avoid contact of dissimilar metals. When differing metals are in contact in a wet environment, electrons are transferred between the metals resulting in corrosion. Copper content in most mainstream preservative treatments can create corrosion in hardware and fasteners if not carefully selected. Hot-dipped, galvanized stainless steel or tested, proprietary-coated products must be used when adjacent to this lumber. Beyond this, it is also important for the hardware and fasteners that work together to be of the same material or otherwise not in contact.

Scab onto the joist.
Scab onto the joist.

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What is capped composite decking? It's a great option if you like the look of wood but not the maintenance. Learn about capped composite at Decks.com.

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