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Breadcrumbs: Home Services Wood Floor Gap Filling

Wood Floor Gap Filling

If you have an original hardwood floor that has been in place for a number of years, it's possible that the individual planks have contracted, leaving gaps where once the boards would have fitted snugly together.

There are two reasons why you may wish to fill the gaps in a wooden floor.

Firstly, if you have a wooden floor with gaps that sits above a cellar or other unheated space, the chances are that you will suffer from draughts and dust rising through the floor. Filling the gaps should eliminate these issues.

The second reason is purely cosmetic. Filling the gaps in a wooden floor can give it a feeling of evenness and continuity, and if the filling is undertaken sympathetically it should blend in with the overall look and feel of the floor.

There are a number of ways in which the gaps in a wooden floor may be filled, and whilst it is possible to do this yourself  it may be preferable to leave it to the professionals at Modern Floor Sanders (NW) Ltd. to ensure that your wooden floor retains its perfect finish.

Wood floor gap filling methods

1. The traditional method for filling gaps in a wooden floor is to mix fine sawdust of the type of wood from which the floor is constructed, with resin. The resulting paste may then be carefully applied to the gaps with a spatula or filling knife.

It should be noted that the success of this method will be limited with wider gaps or where there is excessive movement in the wooden floor, as over time the resin may crack and fall out, or work loose from the gaps.

2. Specialist flexible sealants have been developed which can be applied directly into the gaps using a filling gun and filling knife. Again, care should be taken when using on wooden floors where gaps wider than 3mm have developed. Additionally, it may be difficult to find a flexible sealant which matches exactly the colour of your wooden floor.

3. Gaps may be filled using fine strips of reclaimed wood which match the wooden flooring. These strips should fit the gaps tightly and be glued or hammered into place and carefully sanded or chiselled until perfectly flush with the existing surface of the floor.


Filling the gaps in a wooden floor is less straightforward than it might at first appear. If you would prefer not to risk harming the appearance of your wooden floor, why not ask the specialists at MFS (NW) Ltd to do it for you? Prices for wooden floor gap filling start at £4.00 per square metre.

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Archived Dust Free Floor Sanding Projects

In this section you will find many photos of past dust free floor sanding projects.  These floor sanding projects were carried out over a few years.

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What Our Customers Say

Would just like to express how wonderful the floor is looking after your sanding team completed their work.  I was especially pleased with the time factor.

Dr Wright St Asaph

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North Wales
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