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Sash windows double glazing in Harlow

Retrofitting your single glazing with double glazed units and draught-proofing your timber sash windows

Improved energy efficiency

Improved energy

Noise reduction


Noise reduction


Noise reduction


Replacing your single glazing with slim double glazed units

Sash windows and double glazing don’t seem to be two things that go together and so many character property owners don’t realise that they can hugely improve the thermal insulation in their Harlow home by double glazing their sash windows.

The compromise with period features like sash windows has often been the comfort within the house and higher energy bills due to draught and heat loss. Now, Chameleon can upgrade your sash window and offer you all the benefits of double glazing without changing the structure or appearance of your sash windows.

Our Services

We bring historic wooden windows back to their former glory and make them energy efficient

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

Retrofitted Into Existing Timber Frames

Enjoy 21st-century comfort in your classic Essex period home, the best of both worlds. Fineo glass has unique thermal regulation properties and is so narrow it can be fitted to the rebate of a period sash window which would not accommodate standard double glazing.

Help the environment and your pocket with lower energy bills.

Retrofitted Into Existing Timber Frames

We are an official FINEO glass installer

Chameleon offers double glazing for the sash windows on your character Harlow home to improve warmth and eliminate draughts.

Fineo double glazing for sash windows is already a popular feature on countless Essex homes and with good reason. Fineo glass is light and thin – only 6.7mm – perfectly proportioned for the narrow rebate of a sash window but yet with the most amazing thermal regulation allowing homeowners to enjoy the lower energy costs and constant warm temperatures usually associated with a much more modern home. We can adjust the rebate slightly if necessary to accommodate the glass and with barely any additional weight, your sash windows will run as smoothly as ever.

Testimonials from satisfied customers

As a part of the retrofitting process, we also repair windows’ timber frames

We adjust the ropes and pulleys after fitting to ensure the smooth running of your windows and any repairs we need to make are done using Accoya wood. Accoya wood has revolutionised wood repairs with durability and performance far in excess of traditional woods.

Sash windows draught proofing Harlow

Draught proofing the sash windows on your Harlow home will lower your energy costs whilst raising the temperature in your property.

Chameleon’s double glazing is so draught-proof that it reduces heat loss by around half. Bump up your energy rating and enjoy a draught free and warmer home, find out more from Chameleon.

Sash windows draught proofing Suffolk

Window renovation and upgrade enquiries

To find out more about Fineo glass and what Chameleon can do for the windows on your beautiful home, contact us now

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