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# How do I estimate decking?

#1
03-19-02, 11:24 AM
pjb1
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How do I estimate decking?

My deck will be 26X16. the floor plan calls for a parting board running down the middle with the deck boards fanning out diagonally from either side of the parting board. Is there some type of formula I can use to estimate decking?

#2
03-19-02, 03:23 PM
Member
Join Date: Mar 2000
Location: Arlington, WA
Posts: 9,238
Regardless of how you run the boards, you will still have 416 sq. ft. of deck surface. Since you will be running them diagonally, add 20% for waste. You will need 500 sq. ft. of decking. Since the decking will run diagonal to the joists, decrease the space between the joists. If you are using 2X6 for the decking, place the joists at no more than 14" O.C. If you are using a composite for the decking, place the joists at 12" O.C.

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