How to Lay Decking on Concrete

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While extremely functional and durable, concrete is ugly. Concrete is also very porous. Wood decking placed on top of concrete will soak up moisture from the concrete, causing the wood to warp and rot. In place of wood, use a deck product constructed of synthetic materials, called wood-composite decking. This engineered decking material looks and feels like wood, but needs little maintenance. Better still, wood-composite decking is unaffected by moisture from the concrete, is much less likely to rot and decay, and lasts much longer than natural wood.

Measure the length of the boards for the deck. Use the circular saw and cut the boards to length.

Lay a few wood-composite decking boards on the concrete in a "dry run" to test placement. Shift the decking where needed. If the boards are placed on a concrete stoop, allow the boards to overlap 1 to 2 inches over the edge of the concrete.

Attach the first board closest to the building. Use the drill and masonry bit to drill a hole through the top of the decking into the concrete below. Drill a hole twice as deep as the masonry anchor, so the anchor will not bind on concrete sediment when you drive it into the hole.

Insert the masonry anchor into the first hole. Pound it in with the hammer. Use the nail set to countersink the anchor slightly below the surface of the decking.

Continue drilling holes and adding masonry anchors approximately every 2 feet. Constantly check the position of your decking boards as you install them. Adjust them if they move out of place.

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