Floor Finish Filling Floorboard Gaps

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This image shows the floor finish filling floorboard gapsin some sections. Unfortunately, it is not actually what is happening. It does look that way because it is a newly laid timber floor. The floor finish can sometimes ‘bridge’ across two adjacent floorboards. Therefore, it can appear sometimes to be seamless, or look like filler is present.
Floor finish bridging across floorboards

Filling Gaps Between Floorboards

Filling floorboard gaps is never successful. This is because timber will continually expand and contract. This expansion and contraction are due the amount of moisture in the immediate environment. The weather, air conditioners as well as moisture above and below the floor will affect the floorboard movement.

What Happens to the Filler?

Not only will the filler crack, but pieces will also break out from between the floorboards. Moreover, when this occurs, it also leaves the floor with a non-uniform look. Be that as it may, the Q.B.C.C. (Queensland Building and Construction Commission) sees it from another angle. Some pieces of filler can sometimes tilt up or down exposing a sharp point. In the event this happens, it is now a safety issue. Someone could spear their feet on it.

The Purpose of the Floor Finish

Getting back to the floor finish, filling  floorboard gaps is not the floor coating’s job. In addition to sealing the timber, the main purpose is to offer durability and longevity in varying gloss levels. In some cases, especially new floors, yes, it may bridge across most of the floorboards. Because this is true, a floor finish with flexibility is desirable.

Our Coating System

Our floor finish system offers a flexible membrane first coat. This allows movement without cracking. This is desirable because there are some rigid floor finishes on the market. These floor coatings can crack between the floorboards due to expansion and contraction. On the negative side, this is usually when the coating has bridged across the floorboards as in the image above.