Find a Window Installer you can trust in Dorchester.

Choose from 20 Window Installers, all rated by people like you.

Over 5 reviews & an average rating of 4.3/5 stars, you'll find the right pro

Choose and shortlist

Use the shortlist button to select up to 4 tradespeople, enter your project details and press send

or

Keen to get on with the job?

Get up to 4 quotes from local Window Installers near you

View Shortlist

Kensington Windows

0 review(s)
Offers services in DORCHESTER
Window & door installations across Dorset, Hampshire, Wiltshire & Somerset. High quality range of products including the m...
We are a Family run business with over 25 years’ experience with windows and doors. Predominantly covering the Southwest, ...

Thermaspec UK

1 review(s)
Offers services in DORCHESTER
Thermaspec UK are one of the UK’s leading property improvement specialists. Based in Poole, we are dedicated to helping ho...
The company was established in 1977 selling and installing aluminium windows mainly in the South West. Believing that the ...

The Window and Door Store

0 review(s)
Offers services in DORCHESTER
We are nationwide suppliers of Upvc and Aluminium windows and doors. From casement windows to 7 leaf bifolding doors; we a...

Recent Window Installer Enquiries

30 Mar

Windows | uPVC

Dorchester - DT1

Enquiry from: Deb T

Start Date: Immediate

Call anytime. Number of windows: 6 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

11 Nov

Windows | Aluminium

Dorchester - DT2

Enquiry from: Gemma M

Start Date: Immediate

Are you the home owner of that property? - Yes. How many windows are you considering replacing? - NB PORCH. What material do you require, Aluminium? - aluminium. What colour do you want them to be? - ...

Post a similar request >

06 Sep

Windows | uPVC

Dorchester - DT1

Enquiry from: Jorge D

Start Date: Immediate

Call back anytime. Number of windows: 16 Number of doors: 3 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

02 Aug

Windows | Wooden

Dorchester - DT2

Enquiry from: James G

Start Date: Immediate

22 hardwood windows. mainly 18x18 but not standard size in 17th century Grade 2 listed building

Post a similar request >

19 Jun

Windows | uPVC

Dorchester - DT1

Enquiry from: Chantelle L

Start Date: Immediate

Customer is looking to get quotes for replacement double glazing. multiple windows Supply and install Please call to quote.

Post a similar request >

01 Apr

Windows | uPVC | Single Window

Dorchester - DT2

Enquiry from: Neil -

Start Date: Immediate

are you the home owner of that property? - -. how many windows are you considering replacing? - -. what material do you require, upvc? - -. what colour do you want them to be? - -. i assume you requir...

Post a similar request >

22 Nov

Windows | Glazing

Dorchester - DT2

Enquiry from: Clem S

Start Date: Immediate

Customer is interested in Secondary Glazing for two, four section bay windows. Call back anytime. Type of window / door: Windows Glass replacement only: No Number of windows requiring repair: 2 ...

Post a similar request >

11 Oct

Windows | Glazing

Dorchester - DT2

Enquiry from: Ron G

Start Date: Immediate

one small top doubled glazed window is misty

Post a similar request >

04 Jul

Windows | uPVC | Single Window

Dorchester - DT2

Enquiry from: Carlos F

Start Date: Immediate

Are you the home owner of that property? JOINT How many windows are you considering replacing? 1 DOOR What material do you require, UPVC? UNSURE What colour do you want them to be? UNSURE I assume you...

Post a similar request >

18 May

Windows | Wooden

Dorchester - DT1

Enquiry from: Ian F

Start Date: Less than one month

customer in dorchester area has requested that we arrange quotes for their wooden windows project.mr are considering various options and would like to discuss with a window installer directly.please c...

Post a similar request >

09 Dec

Windows | Glazing

Dorchester - DT2

Enquiry from: Clem S

Start Date: Immediate

Customer is interested in Secondary Glazing for 2 bay windows that have 4 sections in them. Call back anytime. Type of window / door: Windows Glass replacement only: No Number of windows requi...

Post a similar request >

21 Nov

Windows | Glazing

Dorchester - DT1

Enquiry from: James O

Start Date: Immediate

Customer is interested in secondary glazing. Call back anytime. Type of window / door: Windows Glass replacement only: No Number of windows requiring repair: 6 Number of doors requiring repair:...

Post a similar request >

21 Sep

Windows | uPVC | Repair

Dorchester - DT2

Enquiry from: Matthew R

Start Date: Immediate

seven single glazed (4mm toughened) panes to be fitted to newly rebuilt oak porch. your webform insists we live in dorchester, but it's actually main street broadmayne, between the black dog and the ...

Post a similar request >

24 Jun

Windows | Wooden | Repair

Dorchester - DT1

Enquiry from: Davd B

Start Date: Immediate

locate and reseal leaks around glass panel in roof vent on conservatory. r are you the property owner: owner of the property property type: terrace what service are you looking for: resealing how man...

Post a similar request >

17 Jun

Windows | uPVC

Dorchester - DT1

Enquiry from: Gavin K

Start Date: Immediate

Good morning, I was wondering if you were able to give me a price on a PVC bi-folding window. The size would be 1950mm wide x 1050mm high. Anthracite grey exterior and white internal face. Silver i...

Post a similar request >

05 May

Building Work | Porch

Dorchester - DT2

Enquiry from: David A

Start Date: Immediate

Call back anytime. New build or replacement: Replacement Quote requested on a porch, in PVCu, to be supplied and fitted.

Post a similar request >

01 Mar

Windows | uPVC

Dorchester - DT1

Enquiry from: Nigel B

Start Date: 1 to 3 months

mr requested quotes for upvc double glazing from a window installer around dorchester. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the infor...

Post a similar request >

13 Sep

Windows | uPVC | Repair

Dorchester - DT2

Enquiry from: James P

Start Date: Immediate

replace 3 double glazed units

Post a similar request >

24 Aug

Windows | uPVC | Repair

Dorchester - DT2

Enquiry from: Paula T

Start Date: Immediate

i need a window taken out to fit a sofa and then i need it put back in again on the same day are you the property owner: tenant (with permission) property type: detached what service are you looking f...

Post a similar request >

23 Aug

Windows | Glazing

Dorchester - DT2

Enquiry from: Debbie F

Start Date: Immediate

supply and fit glass to windows 24 panes @ 392mm x 305mm

Post a similar request >

How much do Window Installer services cost?

How much do Window Installers cost? Prices for Window Installers in 2026 can differ relying on the kind of task that you require to have performed in your house. It's the inquiry we get asked a whole lot "how much do Window Installers charge?". It's generally very good to have an idea of how much a Window Installer are going to likely charge for their services. Prices will probably rise and fall based upon the products and also the tradesman selected. The table reveals the sorts of service that Window Installers typically do and also the typical cost range of these jobs. Some tasks take longer to complete than others so prices do fluctuate by task.

View our Window Installer cost guide View our Window Installer advice

The average price
of a Window Installer in Dorchester is:

£2,607

Window Installer job Window Installer cost in 2026
Double glazing in Dorchester £1,000-£8,500
Upvc double glazing units only in Dorchester £800-£1,200
Triple glazing in Dorchester £1,000-£8,500
Aluminium windows in Dorchester £1,875-£2,875
Wooden window in Dorchester £3,750-£5,750
Aluminium windows supply only in Dorchester £2,600-£3,900
Upvc or wood porch in Dorchester £2,625-£4,025
Sash window in Dorchester £1,150-£9,000
Glaziers in Dorchester £57-£87
Secondary glazing in Dorchester £1,000-£8,500
uPVC Single Window in Dorchester £225-£345
Wooden sash windows in Dorchester £3,750-£5,750
Wooden windows supply only in Dorchester £2,760-£4,140
Aluminium repair in Dorchester £240-£360
Window repair in Dorchester £268-£402
Wooden window repair in Dorchester £320-£480

Related Window Installer searches in Dorchester

Window Installer FAQs

How to measure the glass for a window replacement?
If the glass in your window has been damaged, you might only need to replace that rather than your whole window frame. Common reasons for needing to replace the glass in your window include:
  • The glass has smashed from an impact such as a stone hitting it from a lawnmower
  • You have been broken into and suspects used the window to gain entry
  • The glass has blown (lost its airtightness) from constant water build-up around the seals, which is common in bathrooms
  • Extreme weather or pressure changes have caused a crack
If your frames are still intact and there’s nothing wrong with your window’s locks or trims, there’s no reason why you can’t just replace the sealed unit in your window. To help with the quotation process, a window installer may ask you to measure the glass for your window replacement. It’s pretty simple to just measure the sealed unit inside your window. There are just 3 steps you need to take:
  1. Including the beading (the plastic and rubber seals around the windows that can be removed), measure the width of the window frame.
  2. Do the same for the height of the window, making sure you include the beading.
  3. Then, take 10mm off each measurement, and you have the approximate size of your glass.
A reputable window installer will still make their own measurements before confirming the size of the glass in your window and going ahead and ordering the replacement. Make sure you get a range of quotes from local and national installers so you can compare the price and their quotation process.
How much does one double glazed window cost?
How much one double glazed window costs is based on a few factors. If you just want to buy the window to install yourself, it will cost less than if you want an installer to fit it for you. If you want to simply buy one double glazed window without installation it could cost anywhere between £100-£300. That’s for a simple casement window, but other types like sash or tilt and turn windows could cost more. It’s recommended that you get a reputable installer to fit your double glazed windows because they’ve had the relevant training and will be able to install it much more quickly. How much it will cost for them to install one double glazed window will very based on your location, the type of window, how difficult the window is to access and whether you choose standard white uPVC or a coloured or woodgrain effect. An average uPVC casement window might cost somewhere between £300-£400, while a dual turn window might cost between £550-£660 to install. Do you really need to replace the entire window? If it’s just the double glazing that needs replacing, for example if it’s misted up inside, this will cost much less. Most window installers or a glazier will be able to just replace the sealed unit inside, and that may cost as little as £250. It’s always best to get a range of quotes from reputable companies so you know you’ve got a great price and you’re sure you’ll get excellent service.

Are A-rated windows worthwhile?

On the grand scale of things there isn’t a huge difference between B-rated windows and A-rated windows. Consumer watchdog Which? have calculated an extra 6.5% would be saved on energy bills with A rather than B rated panes. Be aware that A rated windows are slightly more expensive, however.

how to fit a double glazed window?

Did you just purchase a double glazed window and confused about how to have it installed? Fitting the window yourself can be quite easy with the help of this step by step guide. However, if you lack proper training or experience, we’d recommend you reach out to a trustworthy professional who can guarantee the best results for help. That said, now let’s take a look at the process.

• Remove the old windows by detaching the old beading and glass window safely. Then make some interval cuts using a hand saw before using a crowbar to pry it out.

• Cut the external double glazed window seal. Once done, take a measurement of the window area’s width once empty. Then transfer the measurement to the window sil to face outside and cut using a handsaw.

• Seal the window sil. Add a bead of clear silicone along both inside lip as well as the centre to seal the sil.

• Screw the double glazed window to the sil. Position the window on the top of the lipped section that was siliconed. Then pre-drill them together and screw in three places. You should make sure the screws do not go totally to the sil’s bottom.

• Install the double glazed window. After successfully screwing the double glazed window to the sil, you can now fit in the double glazing. Make use of packers to make sure it’s even in the slot.

• Screw the uPVC window to the wall. If you’re happy and satisfied with the position of the window, you can then pre-drill through the frame of the window and the brick wall. Once done, simply screw it in place using masonry screws or Spax screw as they do not require crawl plugs in bricks.

• Seal around the window. To do this, simply fill any gaps with expanding foam, wipe out the excess and seal with silicone.

how does double glazing work?

One of the essential factors that makes a home truly a home is the convenience and comfort it provides us. As a result, we usually have a long to do list comprising things that come together to make sure our home is comfortable with ambient temperature at the very top of the scale of preference. After all, no matter how greatly designed your furniture and home decor is, it probably would amount for nothing if the temperature is either too hot or too cold. Some of the most common ways we incorporate to make the temperature a lot more conducive and warm during the winter months is by installing air conditioning system or through top notch insulation materials, but the fact still remains that a lot of heat would escape through the doors and windows. And that’s exactly the use of double glazing. So how exactly does double glazing work?

Double glazing basically works by preventing the escape of air and trapping it between two panes of glass. It’s the trapped air which serves as an insulation barrier which delivers 3 major functions. First and foremost, it stops the escape of heat through the window as the barrier created insulates the room from varying air temperatures at both sides of the glazing unit. The second major function is the double glazing works to keep down noise pollution coming from outside. While the third major function of double glazing I the fact that it helps minimize condensation which usually occurs on the single glazed windows’ inside as the cold outside air works to cool the warm air inside the house. When you install a double glazing window, the insulation barrier generated will work to stop the air temperature transmission which ultimately helps prevent the occurrence of condensation.

Will double glazing increase my property’s value?

These days, buyers expect homes to have double glazing. People recognise the benefits of installing double glazing, so if you don’t have it installed you should consider it. You’ll increase your property’s value and give it a better chance of selling faster, since single glazed properties are also more likely to have problems with damp and mould which could put buyers off.

Do I need toughened glass in my windows?

Whether you need toughened glass in your windows depends on where the windows are in your home or business. Toughened glass is sometimes referred to as tempered or safety glass, and it just means it’s stronger than the standard glass that’s usually offered with double glazed windows. So how do you know if you need it?

Toughened glass is useful in areas of your home where you might come into contact with the windows if you were to trip and fall. If you put your hands out to steady yourself on standard glass the chances are it would break into large sharp pieces with jagged edges. Of course, this means that you could seriously cut yourself if this were to happen. With toughened glass, the structure of the glass is changed so that if it breaks it shatters into lots of tiny pieces, minimising the risk to you if you were to fall on it.

You might want to use toughened glass in patio doors, low windows or frames next to doors. It just means that you will be safer if the unlikely happens and you or a family member falls through the glass. There are certain requirements through Building Regulations with windows at a certain level, but any reputable window installer should be able to go through these with you if you need to replace your windows with toughened glass. The regulations will only apply to new windows – there's no need to switch your windows to toughened glass early, but when you do come to replace them you’ll need to make sure they meet the standard.

What are the other double glazing options?

Double glazing frames don’t just have to come in uPVC and are available in other materials including aluminium and wood too. Wooden or timber windows are more suited to properties with a traditional look and are often the frame of choice for listed buildings and homes in conservation areas. When properly maintained wooden windows can last well for years but can be up to three times more expensive than uPVC.Aluminium is the strongest and most durable option. As a metal it is highly resistant to the UK’s changing weather conditions and won’t rust, warp, crack or peel. Aluminium offers a modern appeal and is available in a range of colours.

Window Installer help and advice

How it works

Tell us about your Window Installer project

Answer a few quick questions to help us match you with the right Window Installer

Get up to 4 free quotes

Receive no-obligation quotes from 4 Window Installers working in Dorchester.

Pick the right pro for you

Compare prices, customer reviews and services, and hire the right Window Installer.

Are you a Window Installer in Dorchester?

View our open Window Installer jobs near you

Join today
View Shortlist