If you want to install a slate subfloor on wood flooring, it (the wooden floor) should be, at least, 1 -1/4 inches thick. If not so, apply 1/2 inch thick plywood over a standard 3/4 inch thick subfloor material. Screw the 1/2 inch thick plywood to the existing subfloor spacing the screws every 8 inches on center. Apply a thin coat of water-based urethane to the final layer of plywood that will prevent swelling by stopping water from soaking into unprotected plywood. Installing one-half inch thick cement board on top of the regular 3/4 inch subfloor is a better choice if that option still remains.Other option is to use a crack isolation fabric in between the slate and the wood flooring. These fabrics work well to offset any differential movement between the wood subfloor and the slate. Wood may expand and contract with changes in humidity. However, slate will not react to these weather changes. The fabric absorbs the differential movement between the materials.
For step by step instructions on slate flooring installation in general, refer to Installing Slate Flooring Tiles- A Guide
Source: Ask the Builder
That pool sure does look cloudy! Call the pool boy.
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A DIY flooring installation can be a fun project if you have the right tools, materials, and skills for the floor type you want to install. Stone flooring tile evokes the look of durability and quality. Stone surfaces resist water, steam, odors and, above all, are easy to clean. Just be aware that stone must be sealed to prevent staining upon installation.
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