Luan seams under vinyl sheet flooring

Old 03-05-14, 01:12 PM
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Luan seams under vinyl sheet flooring

Hi there! We are getting ready to lay down vinyl sheet flooring and are using luan between the subfloor and vinyl. We are wondering if the seams of the luan need to be sealed, bonded, or caulked in some way to keep them smooth so it will not show under the vinyl flooring. Any advice?
Old 03-05-14, 03:18 PM
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The answer is yes that seams need to be smoothed or they will show through. The BIG NO is the use of luan. It is not a suitable material to be used as an underlayment. Please check the plywood section for 1/4" plywood underlayment. It will have one side sanded smooth. Flooring patch can be found in the flooring or tile departments to skim coat the nail holes and seams.
Old 03-07-14, 05:49 AM
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Although some installers don't fill the seams in underlayment, I always have. And like czizzi said. Don't use luan. It can have voids in the plys and can collapse. It also can bleed and stain.
Old 03-07-14, 05:56 AM
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Any flaws need to be filled, seams, hammer marks, nail holes.

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