The spring balance system uses a coiled steel spiral housed in a tube within the window frame. The spiral connects to the sash via a tensioned tape or cord. When you lift the sash, the spring uncoils to assist the movement; when you lower it, the spring recoils to provide controlled resistance.

Key features of our spring balance mechanism:

• Pre-tensioned springs – Factory-set to match your exact sash weight
• Stainless steel construction – Corrosion-resistant for long life
• Concealed installation – Hidden within the frame jambs
• Adjustable tension – Fine-tuning possible after installation

The result is a timber sliding sash window that operates smoothly at any position, holds the sash securely when open, and requires virtually no maintenance over its lifetime.

All our sliding sash windows are manufactured from engineered timber for maximum stability:

• Engineered Pine – Our most popular choice. Cost-effective and ideal for painted finishes in any RAL colour.
• Meranti – Tropical hardwood with fine, consistent grain. Perfect for stained or natural finishes where you want to showcase the wood.
• Oak – Premium hardwood with distinctive character. The ultimate choice for high-end projects.

Engineered timber is laminated from multiple layers, eliminating the warping and twisting common in solid wood. Your sashes will slide smoothly for decades.

Our wooden sliding sash windows achieve excellent thermal performance with modern glazing options:

• Double glazing (14-24mm) – Low-E coated glass with argon fill, achieving U-values of 1.4 W/m²K or better
• Triple glazing – For maximum insulation in exposed locations or eco-builds
• Acoustic glass – Laminated units reduce external noise by up to 40dB
• Single glazing – Available where authenticity or planning requirements demand it

All windows include comprehensive brush-pile draught seals on the sashes, ensuring an airtight fit and eliminating the draughts common with older sash windows.

Every timber sliding sash window we supply includes security features as standard:

• Sash locks – Fitch or Brighton fasteners on the meeting rail
• Sash restrictors – Limit opening for child safety (can be overridden for cleaning)
• Key-lockable catches – Additional security option for ground floors
• Reinforced meeting rails – Prevent forced separation of sashes

Hardware finishes include polished brass, antique brass, satin chrome, brushed nickel, and matt black to complement your interior style.

Customise your sliding sash windows to match your property:

• Painted finishes – Any RAL colour, factory-applied for durability. White (RAL 9003) is most popular.
• Stained finishes – Show off natural grain on meranti or oak
• Dual colour – White inside, heritage colour outside (or vice versa)
• Primed only – For on-site finishing to match existing joinery

Glazing bar options:

• Astragal bars – Applied to glass surface for Georgian appearance with easy cleaning
• Solid timber bars – True divided lights for authentic period restoration
• Plain glass – Clean, contemporary look

Ordering your timber sliding sash windows is straightforward:

1. Get in touch – Send us your sizes and requirements for a detailed quote
2. Confirm specification – We'll finalise timber, glazing, finish and hardware
3. Place order – Pay 50% deposit to start manufacture
4. Production – Your windows are handcrafted (typically 4-6 weeks)
5. Delivery – UK-wide delivery; pay remaining 50% on arrival

We're supply-only, so you'll need a joiner or builder for installation. This keeps our prices competitive – you're paying for quality windows, not showroom overheads or installer margins.