I am looking to install floating engineered wood flooring (20mm thickness), tongue and grove system.
The boards need to be glued together.
Different manuals/guides/tutorials state that the glue should be put on top of the tongue. Other tutorials state that the glue has to be put inside the grove.
I think putting inside grove ensures that glue will go on both bottom and the top of tongue, but I am slightly worried that it might be more difficult to ensure that the glue is spread evenly.
I am also worried that the glue might "leak" on the underlay and damage the waterproof membrame once it dries.
In the same time with putting glue only on top of the tongue doesn't look like it's enough?