Cost to Replace, Repair or Install Subfloor The average cost to replace or repair a plywood subfloor in a 306-square-foot room costs $555, or between $490 and $600. The average cost to install a new plywood subfloor is $620, or between $572 and $720.Click to see full answer. In respect to this, how long does it take to install a subfloor?Installing a subfloor can take anywhere from 8-15 hours or one to two days.Beside above, how much does it cost to install DRIcore? DRIcore system: Current cost, through The Home Depot, is $6.43 per panel. Panels are 2′ x 2′ square. This means that DRIcore costs about $1.61 per square foot. DRIcore estimates that 205 squares are needed for this space. In this manner, how do you calculate subfloor? Divide by the total square footage by the square footage of a sheet of plywood to find the number of sheets required to cover the space. A 4×8 sheet of plywood is 32 ft2. For example, if the area to be covered in plywood is 800 ft2 then 25 sheets of plywood will be needed to cover it.How much does it cost to install plywood underlayment?The cost of your underlayment depends on what you use for materials; for example, if you are installing a hardwood floor, you may use inexpensive plywood for your underlayment at $1.20 per square foot, plus labor costs of $30-$100 per hour.
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