This page explains double glazing cost in Morden for homeowners who want a clear idea of the price before they book a survey. You get a plain guide to what each product starts from, what pushes the price up or down, and how we set a fixed figure for your home.
We are a local installer working across Merton, and we fit windows, doors, conservatories and roof glazing in Morden every month. Every job is fitted by FENSA-registered installers and comes with a 10-year guarantee. The figures below are starting points. Your own price comes in a written, fixed quote after a free survey, which you can book on our get a quote page.
What shapes glazing prices in Morden
- Typical homes: 1930s semis and terraces, including the St Helier cottage estate, with some flats
- Postcodes we price for: SM4
The type of house you live in and how easy it is to reach the windows both show up in the quote. That is why we always come out to look before we give you a price. For more on the area, see our main page for double glazing in Morden.
Starting Prices for Common Products
These are the lowest prices for a standard job. They give you a fair place to start. Most homes end up a little above the base figure once size, glass and finish are chosen.
- uPVC casement window: from £400 fitted
- Sash window: from £650 fitted
- Composite front door: from £1,200 fitted
- Bifold doors: from £3,200 fitted
- Conservatory: from £8,500 fitted
- Skylight: from £750 fitted
Each "from" price covers a standard size, white or plain finish, A-rated double glazed units, removal of the old frame and making good around the new one. It does not cover scaffold, structural work or special glass. Those are listed on your quote as separate lines so you can see where the money goes.
For the full town-wide guide, with more detail on each product, see our main double glazing prices page.
What Drives the Price of a Window
Two windows can look the same and still cost quite different sums. The gap comes from a few clear things.
- Size and shape. Larger frames use more profile and more glass. Bays, arched heads and odd shapes take longer to make and fit.
- Frame material. uPVC is the lowest cost. Aluminium costs more for its slim frames and powder-coated finish. Timber sits at the top and suits period homes.
- Style. A plain casement costs less than a flush casement. A vertical slider sash costs more again, as it has weights or spiral balances and more parts.
- Colour and finish. White is the base price. Woodgrain foils, grey and other colours add a little per frame, and dual colour adds a bit more.
- Hardware. Multi-point locks come as standard. Upgraded handles, restrictors and fire escape hinges are small extras.
When you have several windows, the cost per frame tends to fall. We set up once, the van comes once and the fitters work through the house in one visit.
Glass Choices and How They Change the Cost
The sealed unit is a big part of what you pay for. Our standard unit is 28mm, A-rated, with low-E glass, argon gas and a warm-edge spacer. A unit like this reaches a U-value of around 1.2 W/m²K, which meets Part L for replacement windows.
From there, you can pay more for:
- Triple glazing. A thicker unit with a third pane. It can bring the U-value down to around 0.8 W/m²K. Frames need to be deeper and the glass is heavier. Read more on our triple glazing page.
- Acoustic glass. Laminated panes of different thickness cut road and rail noise. This is worth it on busy roads.
- Safety glass. Toughened or laminated glass is needed by law in doors, low panes and some side panels.
- Obscure glass. Patterned glass for bathrooms and front doors costs a little more than clear.
- Solar control glass. Useful for south-facing rooms, roof glazing and conservatories.
We only suggest an upgrade when it does a job for your room. A quiet back bedroom does not need acoustic glass, for example.
Doors, Conservatories and Skylights
Doors have their own cost drivers. A composite door price moves with the style, glass panels, colour on each side, letter plate, knocker and lock grade. A door with side panels or a top light costs more than a single leaf in a standard frame.
Bifold doors are priced by the number of panes and the width of the opening. Aluminium bifolds cost more than uPVC, but they have slimmer frames and run more smoothly on wide spans. If the opening needs a new steel beam, that is a building job and goes on the quote as a separate line.
Conservatory prices depend on size, style, roof type and the base. A solid or tiled roof costs more than glass, but keeps the room warmer in winter and cooler in summer. Groundwork, drainage and electrics are the hidden parts of a conservatory budget, so we list them in full.
Skylight prices change with the size, how the window opens and the roof type. A fixed rooflight on a flat roof is simpler than an opening window cut into a pitched slate roof. Electric opening, rain sensors and blinds add to the cost.
Access, Parking and Site Work
The work on site has a real effect on the final figure. In Morden, we look at access closely at the survey, because it can add time on fitting day.
- Upper floors. Most first-floor windows can be fitted from inside with ladders. Some need a tower or scaffold, which we price by the day or week.
- Narrow paths. Large units may need to be carried by hand through the house or down a side path.
- Parking. A permit or a parking bay suspension can be needed for the van. We tell you this up front.
- Making good. New plaster, trims and cills are part of the job. Rotten lintels or loose brickwork found once the old frame is out are priced and agreed with you before any extra work starts.
We remove and recycle your old frames and glass. That cost is already in our price, not added at the end.
How We Turn This Into a Fixed Quote
We do not quote from a phone call or a photo. A surveyor visits, measures each opening, checks the walls, lintels and access, and talks you through the options. You then get a written quote with a fixed price for each item, the full glass and frame spec, and the payment stages.
The price on the quote is the price you pay, unless you change the order. If we find a hidden problem once a frame is out, we stop and agree the fix with you first. Our full process, from survey to aftercare, is set out on our how we work page.
How to Compare Quotes Fairly
A low price is only good value if it buys the same thing. Line up each quote and check:
- The frame profile and material, and whether the frames are steel reinforced where needed.
- The glass spec: unit width, gas fill, low-E coating and U-value.
- The locks, hinges and handles.
- Whether cills, trims, making good and waste removal are included.
- Who will register the work with FENSA or Certass, and whether you get a certificate.
- The length of the guarantee and whether it is insurance backed.
If two quotes are far apart, ask the lower one what has been left out. It is often the glass, the trims or the scaffold.
Frequently Asked Questions
Why can't you give me an exact price over the phone?
Every opening is a little different, even on the same street. We need to measure each one, check the walls and lintels, and see how we will get the frames in. A guess over the phone would only change later. A free survey takes about an hour, and the written quote that follows is fixed, so you know the full cost before you agree to anything.
Is it cheaper to replace all the windows at once?
Yes, the cost per window tends to drop on a whole-house job. We set up once, make all the frames in one batch and fit them in one visit, so there is less travel and less time spent on prep. If you need to spread the work over time, we can do the most urgent rooms first and match the rest later.
Can you replace just the glass rather than the whole window?
Yes, if the frame and sash are sound. We can swap a misted or broken sealed unit for a new A-rated one. This costs far less than a new window. If the frame is warped, the hinges are worn or the seals have gone, a full new window is better value over its life, and we will tell you which makes more sense.
Does triple glazing cost a lot more than double glazing?
It costs more per window, as the unit is thicker and heavier and the frame must be deeper. The gain in warmth is real but smaller than the jump from single to double glazing. It suits north-facing rooms, homes near busy roads and people who want the best U-value. We can price both so you can compare them side by side.
Do you take away the old windows?
Yes. Removal of old frames, glass and waste is part of every job and is already in the price. We recycle uPVC, aluminium and glass where we can, and the rest goes to a licensed site. We also clean up at the end of each day, so you are not left with dust or debris around the house.