It should help the filler to go in between the boards a bit more evenly.
How to seal hardwood floor gaps. This is one of the most commonly used ways of filling smallish (less than 5mm) gaps in a wooden floor. Wipe away any excess glue. Using a dust and resin filling.
What you need to do is to get your hands. Gap can be filled with caulk or other sealant. Apply wood glue to each of the strips.
First, clean out the gap with. Wipe the oil with a rag. Clean the gaps and make sure all dirt has disappeared.
Fill the hardwood floor gaps with rope. Wood expansion and contraction should be taken into account during the installation of a hardwood floor. Set the angled tip of the tube against the floor, bridging the gap between boards.
This is the method that worked best for us: The downside is their greater cost, as they are not as widely. Glue on either side of the wood and place them in the gap and secure it in lightly with a hammer.
Apply wood glue on the cut wood strips and fix gently in the gaps. Fill the flooring with wood filler. The timber floor is rated r0.7 and the carpet with underlay rates r0.3.