For anyone building or repairing a deck, there are lots of material choices — natural and exotic woods, the new pressure-treated products and dozens of synthetics that resemble real wood boards. The most common and least expensive replacement decking is wood that has been pressure-treated with alkaline copper quaternary or copper azole, available for about $1 a linear foot. While natural and treated wood decking should be sealed every couple of years, synthetic decking just has to be cleaned. Building a Deck (Build Like A Pro)

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