Replace Beyond Repair Windows

We carefully assess each window and only recommend replacement when necessary— ensuring your home retains its character while gaining modern performance.

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Replacing your sash windows with Heritage Sash is a structured process designed to ensure accuracy, performance, and a seamless finish.

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Step 1

Carefully assess and measure existing windows to ensure accurate replacement dimensions and correct specification.

Approx. 1-2 hour

Step 2

Remove existing sash windows and prepare the window box, checking for structural issues or hidden damage.

Approx. 1 -2 hours

Step 3

Repair or reinforce the window box where needed to create a solid foundation for the new installation.

Approx. 2-3 hours

Step 4

Install new sash windows, ensuring correct alignment, smooth operation, and secure fitting.

Approx. 1 day

Step 5

Seal, finish, and make final adjustments. Ensure smooth operation, clean the area, and leave everything ready to use.
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Approx. 4-6 hours

Why replacing your sash windows matters

In most cases, sash windows don’t need replacing—they need restoring. Our process repairs, improves, and preserves your windows at a fraction of the cost of new units.

Bespoke Timber Windows

Custom-made sash windows designed to suit traditional and period properties.

Match Original Features

Profiles, glazing bars and traditional detailing carefully matched to existing windows.

Improved Efficiency

Upgrade thermal performance while maintaining the appearance of original timber sash windows.

Smooth Window Operation

Modern balances, cords and fittings improve everyday usability and reliability.

Upgrade performance.

Smooth operation, better sealing, and optional double glazing for comfort and noise reduction.

Traditional Appearance With Modern Performance

Where existing windows are no longer economically repairable, replacement sash windows can provide improved comfort, efficiency and reliability while preserving the traditional appearance of the property.

Retain Property Character

Maintain the appearance and proportions of original sash windows.

Improve Home Comfort

Reduce draughts, rattling and heat loss with properly fitted replacement windows.

Long-Term Reliability

Professionally manufactured timber sash windows built for long service life.

We regularly install replacement sash windows across Kent & Surrey for period homes, traditional properties and heritage buildings requiring carefully matched timber joinery.

Areas We Cover

We provide sash window draught proofing, repair and restoration across London and Essex.

We regularly work in:

Sevenoaks

Tunbridge Wells

Tonbridge

Canterbury

Guildford

Reigate

Cobham

Weybridge

Godalming

Heritage Sash Window Replacement London Essex

We regularly travel across London, Essex and surrounding areas for sash window repair, draught proofing and restoration projects.

Sash Window Replacement FAQs

How much does sash window replacement cost?
Costs vary depending on size, specification, and materials. We provide clear, upfront quotes after assessing your windows.
Do I need to replace all my windows?
Not always. Many properties benefit from a mix of restoration and replacement. We assess each window individually and recommend the most appropriate solution.
Will replacement change the look of my home?
No. We match the original design, proportions, and detailing to maintain the character of your property.
Will restoration improve energy efficiency?
Yes. When combined with draught proofing, replacementn can significantly reduce heat loss and improve comfort and acoustic sound.
How long does sash window replacement take?
Sash window replacement can be quick— most replacements are completed within 1-2 days, depending on the condition of the windows and the level of work required. We’ll confirm clear timings before any work begins.

Sash Window Replacement Kent & Surrey