Timber Sliding Sash Windows on Springs
Timber sliding sash windows with modern spring balances
Our timber sliding sash windows on springs give you the look of a traditional sash window with a modern balance mechanism. Instead of cords and weights, concealed spiral spring balances hold each sash in place, so the frame needs no weight pockets and can be slimmer than a box sash — ideal for new builds, extensions and openings with shallow reveals. Every wooden sliding sash window is made to measure in engineered pine, meranti or oak, single or double glazed, and delivered fully finished across the UK from £449+VAT.
✓ Made to Measure Any size, any configuration | ✓ 5-Year Warranty On all timber windows | ✓ UK Delivery Nationwide, supply only | ✓ From £449+VAT Delivered fully finished |
How Spring Balance Sash Windows Work
Like any sliding sash window, ours have two sashes that move up and down past each other. The difference is the balance. In spring sash windows, a coiled spiral spring sits in a tube hidden in each side of the frame and connects to the sash. As you lift the sash, the spring assists; as you lower it, the spring provides controlled resistance. Each balance is set to suit the weight of the sash, so it stays where you leave it.
This is the modern sash window mechanism that replaces the pulleys, cords and counterweights of a traditional box sash. Because there are no weights to hide, sash windows with springs don’t need deep weight pockets in the frame.
Our Timber Sliding Sash Window Range
Wooden Sash Window on Hidden Springs — from £449+VAT
A clean-lined sliding sash on concealed spring balances, with clear, unobstructed glazing and a slim frame. A good fit for contemporary homes, extensions and new builds.
Georgian Timber Sash Window on Hidden Springs — from £699+VAT
The classic multi-pane Georgian look on concealed spiral balances, with a slimmer frame and no weight box.
Need another bar pattern, a pair of matching windows or an arched head? We build to your drawings. For the deep box frame and traditional cords and weights, see our timber box sash windows on weights.
Why Choose a Sliding Sash Window on Springs?
- Slimmer frame, more glass — no weight box means narrower sightlines.
- Fits shallow reveals — a practical choice for new builds, extensions and modern openings.
- Smooth at any height — the balances hold each sash steady wherever you stop it.
- Traditional look outside — from the street it reads as a classic timber sliding sash window.
Springs or Weights: Which Is Right for Your Home?
| Spring balances (this range) | Cords and weights | |
|---|---|---|
| Balanced by | Concealed spiral springs | Counterweights on cords and pulleys |
| Frame | Slim, no weight pockets | Deep box frame |
| Typical projects | New builds, extensions, shallow reveals | Period homes, conservation areas |
If your home is listed or in a conservation area, check with your local planning authority first — some councils ask for the traditional mechanism. In that case, choose our sash windows on weights.
Double Glazed Timber Sliding Sash Windows
Double glazing comes as standard, with triple glazing and acoustic laminated glass available for extra warmth or quieter rooms. Low-E coatings, argon filling, toughened or laminated safety glass and obscured glass for bathrooms are all options. Choose astragal bars, solid glazing bars or clear, undivided panes. Ask us for the U-value of your chosen specification when you request a quote — it depends on the timber and glazing.
Hardwood or Softwood Sliding Sash Windows
All three of our timbers are engineered — laminated for stability so the sashes keep running smoothly:
- Engineered pine (softwood) — our most affordable option and ideal for painted finishes.
- Meranti (hardwood) — naturally durable with a fine, consistent grain.
- Oak (hardwood) — premium character and strength.
Compare them in our guide to hardwood vs softwood sash windows.
Made to Any Size, Including Small Sash Windows
There are no stock sizes. We make everything from small sash windows for bathrooms, cloakrooms and landings to tall sliding sashes for living rooms, all to your measurements. Follow our guide to measuring wooden windows, or ask us to arrange a site survey if you don’t have measurements.
Finish and Protection
Every window is vacuum-impregnated before machining and finished with a multi-coat microporous system, in any RAL or Farrow & Ball colour. Your windows arrive fully finished and are covered by our 5-year warranty.
Buy Timber Sash Windows Online
We are a UK supplier of made-to-order timber windows, trading since 2013. Ordering your timber sliding sash windows is simple:
- Send your measurements, style, timber and glazing — or book a site survey.
- Receive a detailed quote within 48 hours; a 50% deposit books your production slot.
- Your windows are made in around 20 working days.
- We deliver fully finished across the UK; the balance is due on delivery and your own installer fits them.
Prices start from £449+VAT. See our timber windows cost guide for typical budgets.