Not all tongue and groove flooring systems require the use of glue. Before you commence with your tongue and groove installation, carefully read the instructions and ensure that your flooring calls for the use of glue; generally, it is best to follow the manufacturer’s installation instructions.
Many companies market glue specifically intended for use in the installation of tongue and groove flooring. These glues, marketed as “tongue and groove flooring glue” or “hardwood flooring glue,” typically dry clear; thus, any glue that seeps through seams during installation should not be too much of an aesthetic problem.
If you elect not to use tongue and groove flooring glue, you can use traditional wood glue; however, doing so will require extra care. Most wood glues dry tan, so if you use this glue in the installation of your floor you will need to work carefully to ensure that none of this glue seeps to the surface; it will be visible if it does.
The glue you apply when installing your tongue and groove flooring does more than just hold the slats together. It also creates a water-resistant barrier between the flooring and your subfloor, protecting it from minor spills or leaks.