composite decking below ground

The goal is to excavate as much earth as needed while leaving the ground beneath as compacted and undisturbed as possible. Add Tip Ask Question . The decking boards are screwed in place with special composite decking screws that don't require pre-drilling. If you don't have an impact driver, well 

provide any spacing between the decking boards; it was too close to the ground; it was enclosed on THREE SIDES. Because the deck was enclosed on the three sides, it was impossible to get air moving under the decking. You need air moving to evaporate any water that will fuel growth of mold and mushrooms. Free and 

RainEscape Drainage System. A unique under-deck drainage system a network of troughs and gutters keeps rain, spills and snow melt from dripping through elevated deck boards, creating a dry patio area on the ground level below. Protect Joist and Beam Tape 

Rather than going below the frost line, deck blocks sit directly on the ground so they are a bit more susceptible to movement, though if the ground is pretty consistent where you plan to Composite deck products are only offered as decking material, there is nothing we've found that can be used for building sub-structures.

If creating a raised deck with posts sunk into the ground, it is a good idea to paint the part of the post that will be underground with a coat of preservative before you concrete it in. Composite decking is easy to fit due the special fixing clips provided, and can last for many years with little or no maintenance.

Deck support posts should be mechanically fastened both to the footing in the ground and the deck frame or beam. Metal brackets make a strong connection while raising the wood post away from standing water. For this reason it's always important to install deck and porch footings below the frost line for 

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