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Vapor Barrier for a 10×20 Area

Covering a 10×20 area (200 sq ft) with 6-mil poly takes about 1 roll once you add 15% for overlaps. Enter your own dimensions below.

01 / YOUR MEASUREMENTSUpdate any value
Poly rolls
1 roll
Area to cover
200 sq ft
With overlap
230 sq ft+15% for 6" overlaps & waste
6-mil poly rolls
1 rolleach 10'×100' = 1,000 sq ft
Cost (est.)
$70~$70/roll

Planning estimate. Adjust allowances and sample prices for your supplier; tax, delivery, and labor are not included.

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Want the full guide — tools, step-by-step, common mistakes and FAQ? See the Vapor Barrier Calculator.

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