Glue Solid Hardwood To Concrete?

Only a few short years ago the only type of solid hardwood that was glued would be thick parquet or herringbone. Expo Design and their parent store Home Depot began the wild ride of glueing more common solid 3/4 inch hardwood. Unfortunately many installers did not know how to do it properly. Our last visit to the stores mentioned shows they have replaced the 3/4" hardwood with thinner solid products.

Thinner solid hardwoods have more flex to them. One of the most troublesome aspects of gluing these hardwoods was always the lack of flexibility. Thicker crooked boards don't straighten out as easily as thinner hardwoods. Often you would get gapping before the job was done.

Today there are still many installers that will not take on this kind of job, However, done properly they can be just as successful as any other type of installation.

Major urethane adhesive manufacturers will warrant their use for solid hardwoods providing all specifications are followed to the tee. Knowledge, experience, and strict attention to how it can be done is critical. A few tips for any successful installation would include:

 

• Use a urethane based adhesive and a 1/4" x 1/4" square notched trowel with a spread rate of 30-35 square feet per gallon.
        Example shown above
• Shorter 3/4" solids are much easier to glue direct.
• Moisture testing and subfloor flatness is critical for any successful installation.
 

 
 
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