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Sash Windows Repair in
Hertfordshire

Sash windows restoration is up to 70% cheaper than complete windows replacement. We specialise in Sash windows repair in Hertfordshire.

Our windows restoration services

If you live in Hertfordshire and are looking to repair your heritage wooden windows or you live in a Grade 2 listed property then you have come to the right place. Wooden sash windows are elegant and come with plenty of charm but they also require upkeep and maintenance to timber frame to ensure they work effectively and look good as new.


Sash Windows Before and After restoration



At Chameleon, we are trusted experts in sash windows repair in Hertfordshire. We have decades of experience restoring sash, casement, and sliding windows.

We pride ourselves on delivering a first-class service using the best materials available, for example, Accoya/ Tricoya for timber frame repairs, FINEO glass for sash window double glazing projects where we replace single glazing with ultra-thin double glazing vacuum units.

We are experts in treating issues such as badly decayed frames, rotten beading, missing putty, and thick layers of old paint. And once work has been carried out, you will not need redecoration for 10 years and 20 years until the next major restoration, saving you time, money and hassle.

Sash and Casement Windows Restoration

Sash and Casement Windows Restoration

Double Glazing Existing Periodic Sash and Casement Windows

Double Glazing Existing Periodic Sash and Casement Windows

Sash Windows Draught Proofing

Sash Windows Draught Proofing

Windows Painting and Paint Spraying

Windows Painting and Paint Spraying

Specialists in sash windows restoration in Hertfordshire.

Older windows often become weather-beaten causing issues like rot and decay in the wood. This not only impacts the overall appearance of your windows but will make them ineffective at keeping your home warm.

Sash Windows Repair in Hertfordshire

As a part of windows restoration project, we can:

  • Repair broken sash cords
  • Repair cracked or broken glass panes
  • Unblock windows
  • Repair rot in timber frames
  • Install new locks

Should you replace your sash windows with new ones?

You may think that when your wooden windows are no longer as beautiful as they once were or or even become rotten throughout that the only option is to replace them with new windows entirely.

However, this is not the case.

We professionally repair and restore even the most rotten and decayed wooden sash windows. Fixing your wooden windows is an affordable way to transform old, deteriorated windows back to their original beauty and functionality.


Replacing your wooden windows with new ones is costly, time-consuming, and could cause you to lose the original character and features of your home.

It is a far better option to restore your timber sash windows than to replace them. Not only is it more cost-effective, but it also retains the charm of your home and is eco friendly too.

Testimonials from satisfied customers

Here are the top 9 issues we deal with every day

Decayed window sills

Decayed window sills

Rotten beading

Rotten beading

Partially decayed frame

Partially decayed frame

Loose putty

Loose putty

Rain water penetrates unprotected wood through cracks in putty

Cracked glass pane

Cracked glass pane

We replace all cracked glass before commencing the wood repairs

Recently painted windows

Recently painted windows

Often rotten wood is left untreated under a fresh coat of paint. It leads to even more expensive repairs being needed in the future.

Holes in sash window frames

Holes in sash window frames

Despite the scary appearance, we repair these on a daily basis

Missing putty and rotten bottom rail

Missing putty and rotten bottom rail

Where necessary we will replace badly rotten window parts

Wet, partially rotten sills

Wet, partially rotten sills

Stripped back to solid wood, the sills will be treated and repaired with Accoya/ Tricoya wood

Our window restoration projects in Hertfordshire

Why Choose us

500 + happy customers over the past 15 years

10 / 15 / 20 years Warranty

For your peace of mind we give the following guarantees

10 years on Paintwork

15 years on Double Glazing

20 years on Repairs

  • fineo
  • Trainde contractor
  • checka
  • chas
  • google rating 5

Window renovation and upgrade enquiries

Contact us now to obtain a Free, No-Obligation Quotation





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