Wood Floor Gap Filling With Strips in London
The Long-Term Solution for Wide Gaps
Gaps between floorboards are common in older properties, especially where timber has naturally shrunk over time. While some solutions offer a quick fix, they often fail under seasonal movement.
We provide gap filling with strips in London as a durable, long-term method designed for stability and appearance. By fitting real wood slivers into each gap, we restore both the structure and look of your floor, ensuring it performs reliably for years. Get in touch with us today!
When Wood Strip Filling Is the Right Choice and When Resin Works Better
Choosing between resin and timber strips depends on gap size, floor movement, and wood type. Resin works well for small, stable gaps up to 2–3mm, where minimal movement occurs. However, for wider gaps or floors that expand and contract seasonally, timber strips provide a more reliable solution. Understanding resin vs wood strip gap filling helps avoid cracking, failure, or repeated repairs.
At Sanding Wood Floors, we assess each floor individually and recommend the most suitable method. For wide gap floor filling in London, we use precision-cut timber strips that move naturally with the floor. It facilitates a stronger bond, improved durability, and a consistent finish that lasts under real conditions.
For gaps under 5mm on stable floors, our resin gap filling service is the more cost-effective option, confirmed at the free survey.
Why Victorian Pine Floors Need Strip Filling, Not Resin
Victorian pine floors show some of the highest levels of seasonal movement we encounter across London properties. In our 30+ years of experience working on period homes, gaps are rarely uniform and often exceed what resin can handle reliably. The best floor gap-filling method for Victorian pine that works with the timber, not against it, which is why we specify timber strip filling as a long-term solution. Reasons why Victorian pine needs strip filling instead of resins:
- Gaps often exceed 5mm, beyond resin limits
- Softwood expands and contracts with humidity changes
- Resin can crack or detach over time
- Timber strips move naturally with the boards
- Provides long-term stability and improved structure
On a Victorian terrace in Islington, we were called in after the owner had had resin applied twice in three years, both times cracking within one heating season.
The pine boards were on a suspended subfloor with 9mm winter gaps that closed to under 2mm by July. Resin was never going to hold. We fitted reclaimed pine slivers, sanded flush and sealed with Osmo Polyx.
That was four years ago. The owner reports the floor has not needed any gap filling attention since.
What Happens If You Use Resin on a Seasonally Moving Floor
Working on period properties across London, we regularly see resin used on floors that were never suitable for it. While it may look effective initially, it rarely performs under real conditions where timber movement is constant. This is why we advise against it for active floors.
Our Wood Strip Gap Filling Process
We follow a result-driven process based on our experience with period floors across London. Using Lagler sanding systems and professional-grade adhesives, we install precision-cut timber strips for gaps typically between 6mm and 12mm. This ensures strong bonding while allowing natural movement, delivering a stable, flush finish that performs reliably over time.
Step 1: Survey and Gap Measurement
We check seasonal movement patterns – if possible, we note whether gaps are wider in winter than summer, which confirms the floor is seasonally active and confirms strips over resin. Written quote returned within 48 hours of survey.
Step 2: Strip Cutting and Matching
Step 3: Glueing and Setting
Step 4: Sanding, Flushing, and Sealing:
Once set, we sand the entire floor using Lagler systems to level the strips flush with the boards. This creates a smooth, uniform surface. We then apply finishing systems such as Bona or Osmo to seal and protect the floor. For a full overview of finish options, see our wood floor finishing guide →
Unsure whether your floor needs strips or resin?
We measure gap widths and assess seasonal movement at the free survey and confirm the right method before any work begins.
Floors We Carry Out Strip Filling On
We carry out floor gap filling in London across a wide range of traditional and modern timber floors, adapting the method based on gap size, timber type, and structural condition.
Victorian and Edwardian Pine Floors
Original Hardwood Floors
Wide-Gap Parquet Blocks
We assess at survey whether the blocks need repositioning before filling, or whether strips can be fitted directly between shifted sections.
For full detail on parquet restoration including the bitumen removal process, see our parquet floor sanding service →
Wood Strip Gap Filling Cost in London
Floor gap filling cost in London typically ranges from £8 to £25 per m², depending on gap size, timber type, and floor condition. Wider gaps and detailed strip work may increase the cost due to additional labour and material requirements.
Wood strip filling - standard gaps (6–8mm)
Wood strip filling - wide gaps (8–12mm)
Wide gap restoration (12mm+)
For a typical Victorian pine living room of 20–25m² with moderate seasonal gaps, the strip filling element adds approximately £160–£300 to the sanding project cost.
Resin filling for the same room would cost £66–£250, strips are more expensive, but on a seasonally moving floor the strips will last 4–5x longer.
We confirm at the free survey which method is right for your floor and the cost for each option.
Final costs depend on floor condition, gap variation, and any required board repairs. See our full wood floor price guide →
Our Recent Work
Our Other Services
Wood Floor Sand & Seal
Varnish Treatment
Floor Finishes and Seal
Stair Stripping and Sanding
Commercial Floor Sanding
Hardwood Floor Sanding
Maintenance and Care
Parquet Floor Sanding
See What Our Happy Clients Have to Say!
Sarah
Maidstone, Kent
★★★★★
"I recently hired Sanding Wood Floors to restore the original floorboards in my Maidstone home, and I couldn't be happier with the results! I highly recommend their services!"
James
Tunbridge Wells, Kent
★★★★★
"As a homeowner in Tunbridge Wells,kent I was amazed by the skill and efficiency of the Sanding Wood Floors team. They brought my worn-out wooden floors back to life, leaving them looking brand new."
Olivia
Ramsgate, Kent
★★★★★
"I'm extremely satisfied with the results. The finished parquet floors are absolutely beautiful and have added so much value to my home. I highly recommend them to anyone in need of wood floor restoration."
Frequently Asked Questions on Wood Floor Strip Filling
Will the wood strips be visible after sanding and sealing?
After sanding flush and sealing, the fills integrate into the floor surface. In raking light, very slight tonal variation may be visible, this is true of any filled surface and is not noticeable in everyday conditions.
The colour match is excellent because we use the same species; it is never identical because no two pieces of timber are identical.
How long do wood strip gap fills last compared to resin?
The reason strips outlast resin on moving floors is that the PVA bond allows slight flex as the boards expand and contract, while resin is rigid and cracks under the same movement.
Can you use wood strips on all floor types?
For engineered floors with a floating installation, we assess whether strip filling is appropriate or whether the floating construction means the boards need repositioning first. Always confirmed at the free survey before any work begins.
Do you guarantee that strip filling won't loosen or fail?
What we can say is: correctly fitted V-cut slivers bonded with PVA adhesive will outlast resin on any floor with seasonal movement, and strips fitted by us on floors we assess as suitable have not required refitting in subsequent surveys.
If extreme structural movement makes filling unlikely to hold long-term, we say so at the survey and recommend repositioning boards instead.
How much does wood strip gap filling cost in London?
For a typical Victorian pine room of 20–25m², the strip filling element adds approximately £160–£300 to the sanding project cost. Strip filling costs more than resin, but on a seasonally moving floor lasts 4–5x longer.
We quote both methods at the free survey so you can choose with full information.
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