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Sash Windows Double Glazing & Draught Proofing in Cambridge

We provide specialist slim double glazing and draught-proofing solutions for period wooden windows.

Period windows can be reglazed with slim double glazing without a need for the sash replacement

Old wooden Sash or Casement windows are always a challenge when it comes to double glazing. Rebates (a gap where a glass pane fits into) in such windows are quite narrow. Standard double glazing would simply not fit into such rebates. Also, frames need to be strong enough to carry the extra weight of double glazing. Originally they were meant to carry the weight of single glass. Installing double glazing into such frames will make them dangerous to operate. To make things even trickier, sash windows with a system of weights and pulleys need a competent adjustment to make sure the extra weight of double glazing does not impact their smooth operation.

In our Sash Windows double glazing project, we use Fineo glass 6.7 mm thick

We work with Fineo glass. It is only 6.7mm thick, yet provides thermal performance of a standard size double glazing unit. It is an excellent choice for period properties. For windows with very narrow rebates, we have a tailor-made solution. Not only do we widen such rebates, but also strengthen frames so they can carry the extra weight. For sash windows, we do weight rebalancing to ensure they work in a safe and smooth manner.

15 Year Guarantee on Glass

Fineo is manufactured by AGC in conjunction with Panasonic. Fineo has a market-leading 15-year guarantee. Most slim double-glazing only has a 5-year guarantee due to their use of inert gases, which escape over time.

We only use Accoya/Tricoya wood for windows restoration

Accoya® is wood, but not as you know it. It is modified timber in which a process called acetylation, a cutting-edge patented technology, enables it to resist rot, defy the elements and stay strong for decades. Guaranteed for 50 years above ground and 25 years in ground or freshwater, its performance and properties are remarkable.

Dimensionally stable

Dimensionally stable

– Swelling and shrinkage reduced by 75% or more – Doors and windows open effortlessly year round – Reduced maintenance costs

Outstanding durability

Outstanding durability

– Lasting 50 years above ground, 25 years in ground/freshwater Class 1 durability, surpassing even teak – Virtually rot proof – 70 year minimum service life stated by TRADA

Perfect for coating

Perfect for coating

– Improved stability means coatings last up to two times longer – Easier to coat, less preparation and sanding required

Sash and Casement Windows on-site Paint Spraying

Paint sprayers allow us to apply an equivalent of 2-3 perfectly even coats of paint in just one day. This gives woodwork much better protection, perfect adhesion and superior finish. With such application windows and doors can be shut overnight without sticking.

What we can do for you

Tasks PerformedComplete window refurbishmentStandard maintenance painting
Remove rotten bits of wood.
Treat affected areas with
wood hardener
Repair woodwork with Accoya/Tricoya
wood and flexible wood fillers
Encase treated woodwork with
Tricoya veneers
Unblock windows
Repair pulley cords
Replace cracked glass
Sand down woodwork
Perform minor woodwork repairs
Repair loose putty with flexible
resinous fillers
Prepare woodwork for painting
Spray paint all woodwork
Tel.:   01223 504 315
Mob.:   0779 505 4725

Book your quote today:

– thorough assessment of your exterior woodwork;
– detailed written quotation;
– understanding of the condition of your woodwork and what needs to be done;
– tailor-made solution for your project.




Registered in England and Wales,

© 2008-2020 Chameleon Decorators Cambridge Ltd

number 6539664

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