AcclimationWhen the site is prepared, the flooring can be delivered and stored in each room where it will be installed. Nail the finished flooring to the sleepers through the film. Lay plywood diagonally across the direction of the finished floor to help prevent cracks along panel edges. Subfloors Solid flooring may be installed directly to the slab. Then fasten 3/4-in. One of the simplest options is a sleeper-based subfloor. For solid wood, vinyl, carpeting and most other materials, a plywood underlayment must be attached to the concrete. You can lay laminate planks over various concrete surfaces, including on a concrete basement, on a concrete subfloor, or on concrete stairs/steps. Leave ¾” space between wall and plywood. Unroll 15-lb. After installing a vapor retarder (if necessary… Test by … Materials Not Suitable for a Laminate Installation: 1. Flooring is considered acclimated when the moisture difference between the wood and the subfloor material is within 4% for flooring less than 3” in width. With solid hardwood floors, a proper vapor retarder must be installed on top of the slab to make sure normal slab moisture does not reach the finished floor. To prepare a concrete subfloor for installing tile, you’ll need to do a different kind of preparation. Plank Flooring Photo: schluter.com 3. The best way to do this is with tongue and groove subfloor options. For powder load or pneumatic pressure information, contact your local supplier. Staple or staple and glue (with urethane or construction adhesive) the second layer to first layer on 12” interior grid pattern (6” on the perimeter). The slab must be flat with a trowel finish, free of grease, oil, stains and dust. NWFA recommends using the manufacturer's suggested adhesive. Panels staggered every 2', and spaced 1/8” between ends, with ¾” minimum expansion space at all vertical obstructions. The National Wood Flooring Association recommends two choices in sub-flooring systems for concrete installations: plywood-on-slab and sleeper. The installation of calcium aluminate cement based self-leveling concrete, Param 5500 along with expanded metal lath for reinforcement is a successful fast-track method to convert a plywood subfloor into a beautiful concrete floor. A vapor retarder is always required over the concrete slab and below the subflooring material. Solid parquet should not be installed below grade. In some instances, you might be able to install your flooring over an existing floor, but it is important to check prior to installation if it is a suitable material. To do this, measure and cut the plywood to fit your room. A concrete slab makes for a very hard, solid, durable, and often very smooth subfloor. Fasten 2” from the edge every 6-8” along the perimeter of the sheet and one fastener or more spaced every 12” in the interior of the panel. Older homes have subfloors made of plank woods, which may be exposed to too much moisture over time. “There’s a whole world of beautiful American hardwood products – made right here in the United States – that will check all the boxes on your holiday gift list” | WS&A Public Relations Lostine De JONG & Co. Maiden Home KEVA Planks Homi Baby, https://www.facebook.com/AmericanHardwoods, https://www.pinterest.com/americanhardwds/, © 2020 Hardwood Manufacturers Association, How Selecting Materials Impacts Our Lives. For best results, several areas of each room should be tested for excess moisture. Part I – Direct Gluing a Subfloor Over Concrete, Headquartered in Great Neck, New York, USA, SOLID STRIP AND PLANK FLOORING INSTALLATION. SleepersFlat, dry, kiln-dried, preservative-treated 2" x 4" sleepers in random lengths (18" to 48") can also serve as a nailing base. The result is a subfloor that protects finished flooring from cold and damp concrete-based floors. Puncture bubbles to release trapped air. Installing Tile Directly on Concrete . (Follow your manufacturer's instructions on coverage, drying time and ventilation. Plywood panels should be placed with 1/8” gaps between sheets and a ¾” minimum expansion space at all vertical obstructions and wall lines. ), Use a notched edge trowel when a correct mastic thickness is specified.Gluing Solid Parquet Flooring Directly to a Concrete Slab. 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