This is a solid 3/4" wood product that is designed to be nailed down into a wood substrate.
Floating Plywood Nailing Base: Install a floating plywood nailing base to receive wood flooring:
1. Lay polyethylene sheet vapor barrier over concrete substrate. Overlap seam 6 inches (152 mm) and seal with tape.
2. Lay one layer of 5/8 inch (16 mm) thick exterior grade plywood over vapor barrier.
3. Lay second layer of 5/8 inch (16 mm) thick exterior grade plywood on a diagonal over first plywood layer.
4. Provide 1/8 inch (3 mm) between all sides or adjoining square edged plywood panels.
5. Screw plywood layers together in a 6 inch (152 mm) pattern. Exercise care not to puncture sheet vapor barrier.
6. Prior to installation of wood flooring, install one ply of asphalt felt underlayment
Or you could use our Elastilon underlayment to float this solid product over concrete.
What you should know about Elastilon Strong
• An Elastilon-backed wood floor is much faster to install than traditional nail or glue-down methods.
• Elastilon Strong can be installed on new concrete floors, handling up to 3.9% moisture content. A vapour barrier of at least 6 mil PE should be used below grade and on newly poured concrete above grade where the moisture content is above 3.9%.
• Laid down with a 5/8” (15 mm) expansion gap, Elastilon Strong creates a dynamic, floating floor that expands or contracts naturally with the hardwood.
• Elastilon Strong has no odor and is free of volatile materials.
• Elastilon Strong gives cushioned comfort.
• 1/8” (3 mm) thick Elastilon Strong has ratings of IIC 62 and STC 54.
• Thermal resistance: R _ 0,15 (m K) / W
• Elastilon Strong carries a 70-year limited warranty.
Answered on 7/5/2011 by customer care 2