Sash Windows in Maidstone & Kent
Sliding sash windows designed to replicate classic timber sashes, with the warmth, security and easy upkeep of a modern window. We survey, supply and fit them from our base in Aylesford, across Maidstone and the rest of Kent.
- Made to replicate classic timber sashes
- Free, no-obligation quotes
- Family-run and fully insured

Sash windows that keep a period house looking right
A sash window opens by sliding: one sash moves up or down past the other, instead of swinging out on hinges. It is the window most Georgian, Regency, Victorian and Edwardian houses were built with, and on a street of them it is the first thing people notice when a house has had something else put in.
Our sliding sash windows are designed to replicate classic timber sash windows while combining that traditional character with low maintenance. They suit period properties, with smooth operation, excellent insulation and lasting performance, and they are just as much at home on a newer house built in a traditional style.
Replacing old single-glazed sashes is also one of the most noticeable changes you can make to a draughty period room. The new windows are double glazed, sealed into the opening and fitted with modern locks, while from the street they keep the proportions the front was designed around.
Choosing your sash windows
Every sash window is made to measure, and these are the choices that decide how yours look and work.
The glazing bar pattern
Georgian sashes usually had six or eight small panes each, while Victorian and Edwardian ones more often had one or two. Matching the pattern your house was built with does more for the look of the front than anything else.
Horns
Many Victorian sashes have small projections, called horns, just below the meeting rail of the upper sash. If your originals had them, choose a design that includes them.
Colour
White is the traditional finish, but cream and other heritage colours suit many period homes. We will show you the options for the frames you choose.
Glass
Double glazing comes as standard, with Low-E glass to keep the heat in, obscure glass for bathrooms, and toughened safety glass wherever the regulations call for it.
Ventilation
Trickle vents can be built into the frame, so a room keeps the background ventilation it needs once the draughts have gone.
Security
New sash windows come with modern locks at the meeting rail, a big step up from the simple catch on many original windows.
Sash windows in conservation areas and listed buildings
Outside a conservation area, replacing sash windows with new ones of a similar appearance does not normally need planning permission. Inside one, permitted development rights are narrower, and where the council has made an Article 4 direction, changing the windows on the front of a house usually needs an application.
Kent councils that publish their criteria show what tends to be approved. Gravesham’s windows and doors guidance for its conservation areas, and Canterbury’s appraisal of the Herne Bay conservation area, both accept uPVC vertically sliding sashes in place of Victorian and Edwardian one-over-one or two-over-two sash windows, subject to the manufacturer and the detailing, and both refuse to let traditional sliding sashes be swapped for standard side-hung or top-hung uPVC windows.
A listed building is a different matter. Any change to its windows, even putting double glazing into the existing frames, needs listed building consent first. Where full double glazing is not acceptable, the Building Regulations accept glass with a centre-pane U-value of 1.2, or low-emissivity secondary glazing behind single glazing, so a protected window can still be made warmer.
How we fit sash windows
Free survey and quote
We visit at a time that suits you, measure every opening, talk through the styles, colours and glass, and give you a clear, no-obligation price with no hidden costs.
Made to measure
Everything is made to the sizes we took, in the style, colour and glass you chose, to fit the openings your home already has.
Fitted by our team
Our installers take out the old frames and fit and seal the new ones, working to the perfect fit and flawless finish we aim for on every job.
Checked before we leave
We make sure everything opens, closes and locks smoothly before we finish, and show you how it all works.
Building Regulations
Replacement windows have been covered by the Building Regulations since April 2002. A new window needs a U-value of 1.4 or better, or a Window Energy Rating of band B; glass within 800mm of the floor has to be safety glass; and a window that is there as a way out in a fire must give at least as much room to escape as the one it replaces. The work is either self-certified by an installer registered with a competent person scheme or approved by your council’s building control team.
Reviews from our customers
What customers across Kent and the South East say about us on Google.
Questions about sash windows
Anything else you would like to know? Call us, message us on WhatsApp or send us your question through our contact page.
Do uPVC sash windows look like timber ones?
They are designed to. With the right glazing bar pattern, horns where the originals had them and a traditional colour, they keep the look of classic timber sashes, and they need far less upkeep: no sanding, painting or replacing rotten sills.
Can I have sash windows in a conservation area?
Usually, if the new windows match the old ones closely. Check with your council first, particularly where there is an Article 4 direction. Some Kent councils, including Gravesham and Canterbury, publish the criteria they use, and both accept uPVC sliding sashes in some cases.
How much do sash windows cost?
It depends on the size, style and number of windows, and on the glass and finish you choose. We give a free, no-obligation quote after measuring up, so the price is for your windows rather than a guess.
Can sash windows go on a modern house?
Yes. They are a popular choice on newer homes built in a traditional style, and on extensions to period houses, where they keep the new part in step with the old.
Which areas do you fit sash windows in?
We are based in Aylesford and fit sash windows across Kent, including Maidstone, Tunbridge Wells, Sevenoaks, Rochester and Canterbury, and in parts of London, Surrey, East Sussex and Essex.
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Get a free, no-obligation quote
Tell us what you need and we will give you a free, no-obligation quote. Call us, message us on WhatsApp or send the form on our contact page.

