We make and fit double glazing windows in Wimbledon Chase, sized to each opening and styled to suit the house. This page is for owners who want to swap old or failing frames for warm, quiet and secure ones. You will see the styles, frames and glass that work best on local homes, and what to plan for before you book.
Our fitters are FENSA registered, so we sign off each window under Building Regulations. Every job comes with a 10-year guarantee. For the full range of styles, see our main double glazing windows page, or go back to our Wimbledon Chase home page.
Window replacement in Wimbledon Chase: local notes
The style of window that suits a house depends on when it was built. Here, most of our window work is on Interwar semis and terraces, with some newer flats near the station.
- Planning: Most houses here are not in a conservation area, but check with the council before making changes to the front of a house.
Building control for the area is run by Merton Council. If your home sits in one of the conservation areas above, talk to us before you choose a style.
Window styles that suit Wimbledon Chase homes
A new window should match the lines of the house. The wrong style can look out of place from the street and may even put off buyers. We bring samples to the survey so you can hold each one up to your own walls.
- Casement windows: side or top hung. They suit post-war and modern homes, seal well and are the lowest cost style.
- Flush casement windows: the sash sits level with the frame, like old timber joinery. They suit cottages and older semis.
- Sliding sash windows: the classic look for Victorian and Edwardian terraces. We fit them in uPVC or timber, with slim glazing bars.
- Tilt and turn windows: tip in for air, or swing in fully for cleaning. They work well on upper floors and in flats.
- Bay and bow windows: we rebuild these as one unit, with new posts and a fresh roof cover where needed.
How the glass keeps heat in
Most heat loss through a window goes through the glass, so the sealed unit matters most. Our standard unit is 28mm deep. It has two panes, a low-E coating on the inner pane and argon gas in the gap.
The low-E coat is a thin metal layer you cannot see. It reflects heat back into the room. Argon is a heavy gas that slows heat moving across the gap. A warm-edge spacer seals the panes apart, so the edge of the glass stays warmer and you see less condensation there.
Together, these give a full window U-value at or below 1.4 W/m²K, which is the Part L limit for replacement windows. The lower the number, the less heat escapes.
For rooms that face north or sit by a busy road, triple glazing adds a third pane. It improves heat and sound performance, but it is heavier. We check the frame and hinges can carry the extra weight.
Frame materials compared
The frame holds the glass and takes the wear. Each material has its strengths.
uPVC is the most popular choice. It insulates well, needs no painting and comes in white, colours and wood-grain finishes. Good frames have welded corners and steel inside for strength.
Aluminium is strong, so the frames can be slim around large panes. A thermal break inside stops the metal from carrying cold. It costs more than uPVC but holds its shape for a long time.
Timber gives the most traditional look. It is often the right answer in a conservation area or on a listed building. Factory-finished timber lasts well if you repaint it every few years.
We explain the pros and cons of each material at the survey. We do not push one over another.
Security and safety features
Every window we fit has a multi-point lock and locking handles. The glass is fixed from inside with internal beads, so it cannot be prised out from the garden. We fit frames tested to PAS 24, the UK standard for windows that resist forced entry.
Some panes must be safety glass by law. This covers low panes near the floor, glass next to doors and most bathroom windows. We fit toughened or laminated glass in these spots as standard.
Upstairs rooms need a way out in a fire. If your old window gave a clear escape route, the new one must too. We fit escape hinges that open wide, so the rule is met without changing the look.
Noise, light and fresh air
Homes near main roads or rail lines often want quieter rooms. Acoustic glass uses a laminated pane with a sound-damping layer. Using two panes of different thickness also helps, as each one blocks a different range of sound.
Light matters too. Slim frames let more daylight in, which helps in narrow terraces and north-facing rooms. Trickle vents in the head of the frame let fresh air in while the window stays locked.
Planning rules and conservation areas
Swapping a window like for like on a house does not usually need planning permission. The rules are stricter in three cases:
- Your home is a flat or maisonette.
- Your home is a listed building.
- Your home sits in a conservation area with an Article 4 direction.
In these cases, the council may want windows that match the originals in style, material or glazing bars. Slim double glazing in timber frames often wins approval where plain uPVC would not. We can draw up the details and help you with the request.
All replacement windows must still meet Building Regulations. Because we are FENSA registered, we self-certify the work and you receive a certificate. If you compare quotes, check any other firm is FENSA or Certass registered too.
What affects the cost of new windows
We do not list fixed prices here, because each home is different. These are the main cost drivers:
- The size and number of windows.
- The style, as sash and bay windows take more work than casements.
- The frame material and colour.
- The glass, such as acoustic, obscure or triple glazing.
- Access for upper floors.
- Making good, such as new cills or plaster repairs.
After a free survey, you get a written, fixed quote with each window on its own line. Payment stages are set out in the quote. You can book your free survey here.
From there we measure, make and fit your windows, then check each one before we leave. Our how we work page explains the full process. For other products and areas, see our main page on double glazing across Merton.
Frequently Asked Questions
Can you put new double glazed units into the old frames?
Yes, if the frames are sound. When only the sealed unit has misted or failed, we can make a new one to fit the same frame. This is quicker and cheaper than a full window. If the frame is warped, rotten or the locks are worn out, a new window is the better choice. We will tell you which applies at the survey.
How should you clean and care for new windows?
Wash the frames and glass with warm soapy water and a soft cloth. Avoid harsh cleaners, as they can mark uPVC and coatings. Once a year, put a drop of light oil on the hinges and locks. Check the drain slots at the bottom of the frame are clear. Simple care like this keeps the windows working well for years.
Will new windows cause condensation inside?
New windows seal much better than old ones, so moist air has fewer ways out. That can show up as damp on cold walls if the room is not aired. We fit trickle vents where the rules call for them. Keep them open, use the extractor fans in kitchens and bathrooms, and open a window for a short time each day.
Do double glazed windows block phone signals?
Standard double glazing has little effect on phone and Wi-Fi signals. Some solar control and low-E coatings can weaken mobile signals a little, mostly in homes that already have poor coverage. If signal is a worry where you live, tell us at the survey. We can suggest glass that keeps a good balance between heat performance and reception.
Are there grants for new windows?
Grants for windows are rare and change often. Some government and council schemes have covered glazing for homes on certain benefits or with very poor energy ratings. Check the current schemes on the government website or with Merton Council. Window replacement on its own does not usually qualify, but it may form part of a wider package.