Double Glazing Windows Merton Park

We supply and fit double glazing windows in Merton Park, made to measure for the homes on your street. This page is for owners and landlords who want warmer, quieter and more secure rooms. You will find the frame types we fit, the glass and locks we use, the local rules to check, and how to get a fixed quote.

Every window we fit is made to size, fitted by our own team and backed by a 10-year guarantee. For the full range, see our main double glazing windows page. To see all our services in the district, go back to our Merton Park glazing page.

Window styles that suit local homes

The right style depends on the age of the house and how you use each room. These are the styles we fit most often.

• Casement windows open on side or top hinges. They suit most houses built from the 1930s on. They are good value, easy to clean and seal tight when shut.
• Sash windows slide up and down. They keep the look of Victorian and Edwardian fronts. Our uPVC and timber-look sashes tilt in so you can clean the outside from indoors.
• Tilt and turn windows tip in at the top for air, or swing in like a door. They suit flats and upper floors where you need to clean from inside.
• Bay and bow windows join three or more frames at an angle. We check the bay roof and support before we fit.

If you are not sure which style suits your home, we bring samples to the survey. You can see and handle each one before you choose.

Frame materials: uPVC, aluminium and timber-look

Each frame material has its own strengths. We help you weigh them up on the survey.

• uPVC is the most common choice. It is warm, low cost and needs little care. Modern multi-chamber profiles hold heat well and come in white, grey, black and woodgrain foils.
• Aluminium is strong and slim. It lets in more light because the frames are thinner. A thermal break inside the frame stops heat escaping. It costs more than uPVC.
• Timber-look uPVC has a wood grain foil and joints that copy a timber frame. It suits older homes where the council or the street calls for a traditional look.

All our frames are made to order. We measure each opening, so the frame fits the gap and not the other way round.

Glass, energy ratings and Part L

The glass does most of the work in keeping heat in. Our standard sealed unit has two panes of glass, a low-E coating, argon gas and a warm-edge spacer. That mix keeps the inner pane warmer, so rooms feel less chilly near the window.

Building Regulations Part L sets a limit for replacement windows. The whole window must reach a U-value of 1.4 W/m²K or better, or a Window Energy Rating of band B or above. Our standard windows meet this limit. Lower U-values mean less heat lost.

• A-rated glass is our standard for most homes.
• Triple glazing adds a third pane. It suits cold, north-facing rooms and homes near busy roads.
• Acoustic glass uses a laminated layer to cut traffic and rail noise.
• Obscure glass gives privacy in bathrooms and on landings.

We are FENSA registered. We self-certify every job and send you the certificate, so you have proof the work meets the rules.

Locks, glass and security

New windows should make your home harder to break into. Every window we fit comes with a multi-point lock and key-locking handles. Hinges are fitted so they cannot be lifted from outside, and the glass is beaded on the inside.

For ground-floor frames, you can add laminated glass. It holds together if struck, so it is much harder to get through. For shops, flats and homes that need more, see our security glazing options.

We also think about safe exit. Upstairs rooms need at least one window that opens wide enough to escape in a fire. We fit egress hinges where the rules call for them.

Choosing the right window for your house

Start with the front of the house. On a period home in Merton Park, a sash or timber-look casement keeps the street view intact. Plain white casements can look out of place on an older front, even where the rules allow them.

Next, think about each room. Bedrooms need a window that opens wide enough for a safe exit. Kitchens and bathrooms need trickle vents or an easy way to let steam out. Rooms that face a busy road may need acoustic glass.

Last, think about upkeep. If you rent out the home, low-care uPVC with a simple lock saves time later. If you plan to stay for years, it may be worth paying a little more for the frame and glass you like best.

What drives the price

We do not list fixed prices on this page. The cost of new windows depends on a few clear things:

• The size and number of windows.
• The style, as sashes and bays take more work than casements.
• The frame material and colour.
• The glass spec, such as triple, acoustic or laminated glass.
• Access, such as upper floors that need a tower or scaffold.
• Making good, such as repairs to render, plaster or sills.

After a free survey, you get a written, fixed quote that lists each window. Ask for your free quote and we will book a time to visit.

Care and upkeep for each frame type

Double glazed windows need very little care. A few simple jobs will keep them working well for years.

• Wipe frames with warm soapy water two or three times a year. Avoid harsh cleaners on uPVC and foiled frames.
• Keep drain holes at the bottom of the frame clear, so rain can run out.
• Oil hinges and locks once a year with a light machine oil.
• On aluminium frames, rinse off salt and grime to protect the finish.

If a unit mists up between the panes, the seal has failed. We can replace the glass on its own without changing the frame.

From survey to fitting day

We start with a free survey and a fixed quote, then make your windows to size and book a date. You can read each step on our how we work page. We have been fitting windows for many years, here in Merton Park and across Merton.

Frequently Asked Questions

Do new double glazed windows add value to a home?

New windows make a home look cared for, and buyers notice that. They also help the Energy Performance Certificate, which buyers and lenders check. Your FENSA certificate and 10-year guarantee show the work was done properly. Keep both papers safe, as your solicitor will ask for them when you sell. Windows that suit the age of the house tend to appeal most.

Can double glazing cut outside noise?

Yes. A modern sealed unit with a good fit cuts noise well compared with old single glazing. For a busy road or rail line, ask about acoustic glass. It uses a laminated layer that soaks up sound. Using two glass thicknesses in one unit helps too. Seals around the frame matter as much as the glass, so a careful fit is key.

How long do window frames last?

Good uPVC frames last for decades with basic care. Aluminium lasts longer still, as it does not warp or rot. Timber needs paint every few years but can last well if cared for. In exposed spots with salt air or strong wind, rinse the frames now and then. Moving parts such as hinges and locks may need a service over time.

Can you fit double glazing yourself?

You can, but you will then need to apply to Merton Council building control and pay their fee. They will inspect the work to check it meets Part L and the safety rules. A FENSA registered installer can self-certify the work instead. You also lose the benefit of an insurance-backed guarantee if you fit the windows yourself.

Do you need consent in a conservation area?

Often, yes. In a conservation area, the council may control changes to the front of a house, such as the style and material of windows. If your home is listed, you will need listed building consent. We check the rules on the survey and can supply drawings and product details if you need to apply.