Wood Subfloors For the Installation of Resilient Floors
A floor flatness tolerance is cited in the “Performance Standards for Wood Floors,” published by the National Association of Home Builders. This states that floors shall not have more than 1/4-inch ridge or depression within any 32-inch measurement, when measured parallel to the joists; and that no point on the surface of a wood floor shall be more than 1/2-inch higher or lower than any other point on the surface within 20 feet, or proportional multiples of the preceding dimensions.
Refer customers to:
Construction Standards Department
1201 15th Street NW
Washington, DC 20005-2800
(800) 368-5242 Phone
(202) 822-0369 Fax