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Waterproof covering for Deck Boards

Has anyone ever seen a waterproof type of covering for an existing deck? My deck boards are in good shape but I would like to cover them with some type of solid waterproof material that would hold up to the weather in Maryland and also to foot traffic. If I could cover the deck I would be able to use the space under the deck as dry storage.
Thank You

Re: Waterproof covering for Deck Boards

Jon, you're basically trying to turn your floor(deck) into a roof. You'd be better off leaving the topside alone and installing one of the under-deck drainage systems.

Here's one example. I don't necessarily endorse this particular brand...it's just an example of the many brends available.

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