Glue Timber Flooring To Concrete

Glue wood flooring to a concrete slab a plywood core makes engineered flooring the most stable choice provided the slab is flat and dry by ken fischer issue 170 if you want to install flooring on a concrete slab your floor covering choices are limited.

Glue timber flooring to concrete.

Sikabond t55 j is a one part polyurethane adhesive for direct elastic bonding of timber floors. The adhesive is of low viscosity and cures on exposure to atmospheric moisture. Other products are better suited for a nail down installation where they are secured to a wood subfloor with nails or staples. Bostik ultraset s is a one part solvent based polyurethane elastomeric adhesive formulated to adhere most types of wood parquet solid strip engineered bamboo and sheet timber flooring systems to levelled concrete and timber substrates or over existing timber floors.

Glue forms the initial bond but without screws and nails the natural expansion and contraction of the wood can break or weaken the glue. A direct stick floor is a common way to install a timber floor by gluing each individual floorboard directly to the concrete substrate or a timber substrate in older styled homes. Some engineered wood flooring products are designed for a glue down application when installing flooring over a concrete slab. Bostik s best urethane adhesive may be used over all properly prepared substrates common to hardwood flooring installations including concrete plywood osb well bonded vinyl vct and ceramic tile cement backer board gypsum underlayments dry above grade cement patch underlayments radiant heat flooring and properly prepared terrazzo.

When glue is used in conjunction with screws and nails the bond is strong enough to resist natural movement of the wood. Solid parquet should not be installed below grade. If you are installing solid timber these boards will also be nailed down as well as glued to restrain the floor from cupping. Solid parquet hardwood flooring can be glued directly to a concrete slab on grade or above grade with the use of a manufacturer recommended vapor retarder.