Tired of draughts, dust, and unsightly gaps in your floorboards?
Gaps between floorboards are more than just an eyesore. They let cold air rise from below, allow dust and dirt to collect underneath, and can make even a beautiful wooden floor look tired and neglected. Over time, timber naturally shrinks and shifts, creating spaces between boards that worsen with age and seasonal changes.
At Floor Sanding Enterprise, we specialise in professional floor gap filling across Kent. We seal the spaces between your floorboards using methods tailored to your floor’s age, timber type, and movement patterns. The result is a cleaner, warmer floor that looks polished and performs better for years to come.
Gap filling improves insulation, stops draughts, and creates a smooth surface that’s easier to clean and maintain. It’s often the essential step that transforms a lovely old floor into an absolutely stunning finish. If you need gap filling and sanding, as part of floor restoration, or as a standalone refresh, we’ll use the proper technique and materials to suit your floor.

Ready to Fill Those Gaps?
Get in touch today for a non-obligation quote.
Our Floor Gap Filling Services

Hardwood Floor Gap Filling
Hardwood floors like oak, walnut, and maple are known for their durability, but even the strongest timber develops gaps over time. We fill these spaces using methods that closely match the wood’s natural colour and grain, restoring the floor’s smooth appearance while maintaining its character.

Pine Floor Gap Filling
Pine floorboards, especially in older Victorian homes, are prone to gapping as the softer wood shrinks and moves. We specialise in filling pine floors using traditional methods like timber slivers or resin-based fillers that blend with the warm tones of the wood.

Parquet & Herringbone Floor Gap Filling
Patterned floors require precision. We work carefully around each block to fill gaps without disturbing the design, ensuring the pattern remains crisp and the surface is smooth and sealed.

Engineered Wood Floor Gap Filling
Engineered floors can develop gaps at the joints, particularly in dry conditions. We use flexible fillers that accommodate the floor’s structure and movement, creating a clean finish without compromising the integrity of the boards.

Floorboard Crack Filling
Individual gaps and cracks in boards can get worse over time if left untreated. We fill these carefully to stop further damage and restore the board’s strength and appearance.
Quality Tools & Materials We Use For Professional Gap Filling
From Draughty and Gappy to Smooth and Sealed
Our floor gap-filling work speaks for itself. Take a look at some of our recent before-and-after projects to see how we transform floors.
Our Floor Gap Filling Process
At Floor Sanding Enterprise, we fill the gaps and customise our service to your floor's age, condition, and movement characteristics. Here's how we go about it:



Inspection & Advice
No floor is the same, so during our initial visit, we assess the size, frequency, and cause of gaps in your floor. We’ll recommend the most suitable filling method depending on the type of timber, the expected movement, and the look you’re after.
Choose the Right Method
Based on our assessment, we’ll find the best approach for your floor:
- Resin & Dust Mix – The most common and effective method for narrow gaps, usually under 3mm wide. We collect fine wood dust during sanding and mix it with specialist resin to create a filler that blends beautifully with your floor’s natural colour and texture. Once dry, it’s sanded smooth for a seamless finish. Ideal for pine, hardwood, and parquet floors.
- Pine Slivers (Wood Strips) – We insert slim timber strips (slivers) into the spaces between boards for wider gaps or traditional floors like Victorian pine. These are glued securely, then trimmed and sanded flush with the rest of the floor. We use reclaimed or matching timber whenever possible. This method offers stability and a more permanent solution, perfect for older or draughty floors.
- Flexible Fillers (Bona Gap Master) – Some rooms need fillers that adapt to seasonal changes, like homes with underfloor heating or changing moisture levels. We use Bona Gap Master, a professional-grade flexible sealant that comes in various colours to match your finished floor. This is the only gap filling product that doesn’t require sanding afterwards, making it ideal for floors that are already sealed or near skirting boards and high-moisture areas where natural wood movement occurs.
Each method is chosen to suit your floor’s specific needs and make sure you get the best long-term results.
Application & Finishing
Once the gaps are filled, your floor is ready for the next stage. Gap filling can be done as a standalone service, or you can combine it with our wood floor sanding and finishing services for a complete restoration. We’ll guide you through your options to achieve the best result for your floor.
Why Choose Floor Sanding Enterprise?
With years of hands-on experience, our team has built a reputation for honest and reliable floor gap filling services across Maidstone and Kent. We’re fully insured, and every job comes with a 6-month craftsmanship warranty for extra peace of mind.
We assess each and every floor individually and recommend the right method for your needs. To protect your home, we work with trusted Bona products as standard, ensuring a cleaner process and a lasting finish on every floor.

Seal the Gaps and Transform Your Floors
Don't let draughty gaps ruin the look and comfort of your wooden floors. Speak to our team of floor gap filling experts in Kent today and bring that warmth and style back to your home.
What Our Customers Say About How We Fill Gaps in Wood Floors
Wooden Floorboard Gaps FAQs
Gaps appear naturally as timber dries out and shrinks over time. Seasonal changes in temperature and humidity cause wood to expand and contract, which can widen existing gaps or create new ones. Older floors, especially in period homes, are more prone to gapping due to decades of movement and wear.
Larger gaps between floor boards allow cold air to rise from below, creating draughts and making rooms harder to heat. Filling these gaps improves insulation, reduces heat loss, and makes your home more comfortable and energy efficient.
When done properly, filled gaps should blend with your floor. We match the filler to your wood’s colour and grain, then sand and finish the entire surface together. The result is a smooth, uniform appearance.
Pine slivers and resin-based fillers typically dry within an hour, allowing us to continue with the sanding work the same day. Flexible fillers are treated differently – we usually apply these after the floor is sealed, as they don’t require sanding. We’ll give you a clear timeline based on the method used for your floor.
Standard gap fillers typically dry within an hour, allowing us to continue with the sanding and restoration process the same day. When gap filling is part of our floor sanding service, we apply the filler partway through the sanding process, let it dry, then continue sanding to create a smooth, even finish. If you’re also adding staining, we’ll schedule the work to ensure proper drying time between each stage for the best results.
We can repair holes and larger damaged areas. Depending on the size and location, we may fill the hole with matching wood filler, insert a reclaimed timber patch, or replace the damaged board entirely. This is often done as part of our floor repair service before gap filling and sanding.
We ask that furniture be cleared from the room before we start gap filling. This gives us full access to the floor and ensures we can work efficiently. If you’re combining gap filling with sanding and finishing, the room will need to stay clear until the entire job is complete.





