Find a Window Installer you can trust in Grantham.

Choose from 61 Window Installers, all rated by people like you.

Over 171 reviews & an average rating of 4.6/5 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
Verified ProOver 10 Reviews

The Window Company

13 review(s)
Offers services in GRANTHAM
The Window Company have been trading since 2001 in the East Midlands area, offering a bespoke service for windows, conserv...
Verified ProOver 50 Reviews

ALL Weather Roofline

53 review(s)
Offers services in GRANTHAM
AWR have years of experience in creating stunning home improvement products, carefully crafted right here in the UK to off...
Verified Pro

Build fix & Plaster

0 review(s)
Offers services in GRANTHAM
We have many years of experience working on extension projects of our own, or sub contracting onto other projects with our...

Recent Window Installer Enquiries

22 Aug

Windows | uPVC | Single Window

Grantham - NG31

Enquiry from: Mehran G

Start Date: Immediate

are you the home owner of that property? yes how many windows are you considering replacing? 2 what material do you require, upvc? yes what colour do you want them to be? white do you require doors if...

Post a similar request >

20 Mar

Windows | uPVC

Grantham - NG32

Enquiry from: Margaret K

Start Date: Immediate

Are you the home owner of that property? yes How many windows are you considering replacing? 1 What material do you require, UPVC? UPVC What colour do you want them to be? whitE Do you require doors...

Post a similar request >

15 Mar

Windows | uPVC

Grantham - NG31

Enquiry from: P

Start Date: Immediate

Are you the home owner of that property? yes How many windows are you considering replacing? 5 What material do you require, UPVC? upvc What colour do you want them to be? - Do you require doors If so...

Post a similar request >

15 Mar

Windows | uPVC

Grantham - NG31

Enquiry from: Joanne H

Start Date: Immediate

Are you the home owner of that property? Sole How many windows are you considering replacing? 4 What material do you require, UPVC? upvc What colour do you want them to be? - Do you require doors If s...

Post a similar request >

09 Mar

Windows | uPVC

Grantham - NG31

Enquiry from: Heidi W

Start Date: Immediate

Customer in Grantham area made an enquiry for double glazing online. 2+ windows Supply and install Please call to arrange an appointment to discuss options

Post a similar request >

27 Jan

Windows | Aluminium | Supply

Grantham - NG31

Enquiry from: Lucy B

Start Date: Immediate

Gordon, would you price for new windows and front door and french doors on bungalow we are renovating in Grantham, if you would can we arrange a time for you to come and look whats needed, we are repl...

Post a similar request >

29 Nov

Windows | uPVC

Grantham - NG31

Enquiry from: Caroline H

Start Date: Immediate

one sash window and 2 top opener windows. are you the property owner: owner of the property what level of service do you require: supply and installation of full unit property type: terrace how many w...

Post a similar request >

24 Aug

Windows | uPVC

Grantham - NG31

Enquiry from: Umesh P

Start Date: Immediate

customer in grantham area has requested that we arrange quotes for their upvc double glazing project.mr are considering various options and would like to discuss with a window installer directly.pleas...

Post a similar request >

13 May

Windows | uPVC

Grantham - NG33

Enquiry from: Patricia D

Start Date: Immediate

*homeowner 2+ windows upvc supplied and fitted please call to appoint

Post a similar request >

05 May

Windows | uPVC

Grantham - NG31

Enquiry from: Gerry M

Start Date: Immediate

customer made an enquiry for upvc double glazing and confirmed on the quotatis site they would like quotes from a window installer.mr lives in the grantham area and would like a call to discuss option...

Post a similar request >

19 Jan

Windows | uPVC

Grantham - NG31

Enquiry from: Clayton S

Start Date: Immediate

replacement of all doors/windows and facias i am looking for quotes for 4+ windows are you the property owner: owner of the property what level of service do you require: supply and installation of ...

Post a similar request >

13 Jan

Windows | uPVC

Grantham - NG33

Enquiry from: Joanne H

Start Date: Immediate

customer in grantham area has requested that we arrange quotes for their upvc double glazing project.miss are considering various options and would like to discuss with a window installer directly.ple...

Post a similar request >

10 Dec

Windows | uPVC

Grantham - NG31

Enquiry from: Michelle D

Start Date: Less than one month

best time: any work type: upvc windows and doors are you the property owner: owner of the property what level of service do you require: supply and installation of full unit property type: semi detach...

Post a similar request >

20 Nov

Windows | Aluminium

Grantham - NG32

Enquiry from: Terence C

Start Date: Immediate

customer in the grantham area made an enquiry a couple of projects including aluminium windows.call anytime and arrange an appointment to discuss. below is some details about this project: are you the...

Post a similar request >

20 Nov

Windows | Glazing

Grantham - NG32

Enquiry from: Terence C

Start Date: Immediate

large double glazed unit has shattered and needs to be replaced are you the property owner: owner of the property property type: detached are you looking for glaziers: yes how many units do you do you...

Post a similar request >

08 Nov

Windows | Wooden | Supply

Grantham - NG31

Enquiry from: John M

Start Date: Immediate

Eight double glazed units (310 x 335) to go into existing wooden front door

Post a similar request >

30 Oct

Windows | uPVC

Grantham - NG31

Enquiry from: Prabhjot K

Start Date: Immediate

Customer made an online enquiry for new double glazing. Miss confirmed interest via Considering a range of options Miss lives in Grantham area 2+ windows Supply and install Please call to arrange ap...

Post a similar request >

20 Aug

Windows | uPVC

Grantham - NG31

Enquiry from: Robert B

Start Date: Less than one month

best time: any work type: upvc windows and doors

Post a similar request >

12 Jul

Windows | uPVC | Repair

Grantham - NG32

Enquiry from: Mr B

Start Date: Immediate

bifold door is jammed in closed position. free quote please to repair/service. are you the property owner: owner of the property property type: detached what service are you looking for: other how ma...

Post a similar request >

20 May

Windows | uPVC

Grantham - NG33

Enquiry from: Kathleen P

Start Date: Immediate

customer made an online enquiry for upvc double glazing and confirmed on telephone and email they would like a call with a window installer to discuss prices.please call to arrange an appointment to q...

Post a similar request >

How much do Window Installer services cost?

How much do Window Installers cost? Prices for Window Installers in 2025 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 Grantham is:

£2,082

Window Installer job Window Installer cost in 2025
Double glazing in Grantham £1,500-£5,000
Upvc double glazing units only in Grantham £800-£1,200
Triple glazing in Grantham £1,500-£5,000
Aluminium windows in Grantham £1,875-£2,875
Wooden window in Grantham £3,750-£5,750
Aluminium windows supply only in Grantham £2,600-£3,900
Upvc or wood porch in Grantham £2,625-£4,025
Sash window in Grantham £1,800-£6,000
Glaziers in Grantham £57-£87
Secondary glazing in Grantham £1,500-£5,000
uPVC Single Window in Grantham £225-£345
Wooden sash windows in Grantham £3,750-£5,750
Wooden windows supply only in Grantham £2,760-£4,140
Aluminium repair in Grantham £240-£360
Window repair in Grantham £268-£402
Wooden window repair in Grantham £320-£480

Related Window Installer searches in Grantham

Window Installer FAQs

Are coloured double glazing windows more expensive than white ones?

Coloured double glazing windows are more expensive than white ones, in general. uPVC is the cheapest material to use for double glazing, and white is the standard colour. But there are endless possibilities in terms of colours you can have, and they do come at additional cost.

Some people choose to have coloured double glazing that matches or opposes the colour of the exterior of their house. Another popular option is a woodgrain effect, which from a distance looks just like more expensive timber windows. The best thing about a wood effect is that you can have the stylish look of wooden windows without the maintenance, and they should last longer.

While coloured double glazing is more expensive than white ones, it doesn’t have to break the bank. The best thing to do is get in touch with a range of window companies and ask them to come round to give you a quote. They should be able to offer you brochures or links to websites of different brands of windows that offer coloured frames. From there, you can decide on the installers you liked most and the brand you preferred.

It’s worth bearing in mind that it’s not always best to go with the cheapest coloured windows. While there lots of good, inexpensive options out there, sometimes very cheap windows won’t be good quality and may not last as long as other slightly more expensive brands. Speak to your installer about guarantees that may come with the windows and how long they would expect them to last before making your final decision.

How to fit aluminium double glazed window?

Whether you’re hiring a professional to replace your double glazing or are considering DIY, it’s a good idea to know how to fit a double glazed window.

You need to start by assembling your window. Fit any handles and cut the outer sill to size by measuring the outer wall depth. Then, screw the outer sill to the window frame and attach the frame fixers. Screw the ventilation grilles onto the inside of the frame and fix the vents on.

Next, you need put the window into place, using spacers to wedge it in. Use a spirit level to check it’s level horizontally and vertically, adding extra spacers if needed. Then, fix the frame into place at each fixing point using a drill, wall plugs and screws. Measure and cut the interior sill, and check that it’s level, adding spacers if needed. Then fix it using screws, masonry nails or adhesive.

Finally, fill in any wide gaps with foam filler and small gaps with sealant. You can get interior and exterior trims to cover these up, making your window look neat and professional.

Should I use a Fensa registered installer?

Using a Fensa registered installer isn’t compulsory but it helps to protect you from cowboys and rogue traders. It will also make life a whole lot easier in regards to Building Regulations. Replacement windows must meet a certain energy efficiency rating and once fitted you need a certificate to show your installation complies. By using a Fensa registered company they’ll issue this certificate, otherwise you’ll need the council to look at the new windows.

How to replace the glass in a uPVC window?
It’s not too difficult to replace the glass in a uPVC window, so if you’re a confident DIYer you could have a go at this yourself. We’ll go through the main steps on how to replace the sealed unit in a uPVC double glazed window:
  1. Using a rubber mallet and a strong pallet knife, remove the beading around the window. You might think they’re part of the frame, but they’re actually separate on the inside of the frame and can be taken out by using pallet knife to prize them out. Start with one of the longest beads first and leave the top bead until last.
  2. Give the glass a little tap to loosen it if it doesn’t come out straight away, then the whole unit should slide out easily. Just make sure it falls towards you and not back out onto the ground below!
  3. Clear any debris that has found its way into the frame with a brush. Add spacers at the bottom of the frame – these could be pieces of plastic.
  4. Get your new sealed unit (make sure you measure the glass before you buy one so you know which size to get) and carefully take it out of the packaging. Look for the British Standard mark – that shows you the bottom of the glass.
  5. Lift the glass into the frame, starting with the bottom first, and make sure that it fits square in the frame before taking the spacers out.
  6. Use a little washing up liquid to spread along the beads to make it easier when you slide them back into the frame. If they simply push and clip back in, you can use something like a block of wood to help you push them in correctly. Put them back in reverse order to how you took them out.
And there you go! If you’re feeling confident you can have a go at replacing the glass in your uPVC window yourself. But if you’ve got any worries, leave it to a window installer who will be able to do it in less than an hour.
what is a window sash?

Windows, being a very crucial feature in every home, are one of the things you simply can’t afford to ignore in your home. Having a good understanding and solid knowledge of your windows’ components like the window sash will help you stay up to date with them and able to identify any minor mishaps early on before it leads to a much bigger problem. So what exactly is a window sash?

Well without much fuss, a window sash is simply that part of your windows that’s able to open and close. And there could as well be more than one window sash that’s operable depending on your window’s type. Window sash usually possess a very basic design as well as structure. What’s more? This section of a window happens to be a frame that’s designed in such a way to make for easy placement inside the whole window casement. You’ll discover inside the sash frame, the window glass alongside any framework possessed by your window which includes grids.

Usually, the sash is fitted into the frame of the window on a runners’ set in such a way that allows for both upward and downward movements. And finally, the window sash’s frame typically comes with a locking system which provided for extra safety and security.

The window sash is a vital feature that can determine the durability and overall performance of the windows. In the event whereby your window sash is malfunctioning, it can result to numerous problems which includes both drafts as well as leaks. As a result, it’s very important to keep your window sashes in a great working condition as failure to do so will make opening and closing your windows a really difficult task.

How much is a single window?
Sometimes accidents happen, and that leads to you needing to replace just a single window. Luckily, most window fitters are happy to replace just one window if you need to. But how much a single window costs will depend on a few factors. Firstly, do you need the entire window, including the frame, replaced, or just the sealed unit? If the frame is still in good condition, glaziers and some window installers can replace the sealed unit and this will set you back around £250. If your window frame is damaged, don’t try to get away with not replacing it. Having a broken window frame can let heat escape your home, increasing your energy bills, and you’re likely to hear more traffic noise. Plus, if the frame is broken you might have trouble closing the window properly, stopping you from keeping your home secure. So how much is a single window if you need the whole thing replaced? You should expect it to cost between £400-£550, but it could cost more or less than this depending on your location, the size of the window and how tricky it is to replace. There are other factors that will impact the cost of replacing a single window. Do you want the window to have plain, leaded or Georgian bar glass? Maybe it will be a casement window, or a bay, bow or sash? The cost will increase if you want more than one opener if it’s a large window, and if you want it to have locks. Also, the standard white uPVC frame colour will probably be included in the price, but if you want a woodgrain look or a different colour uPVC this will cost more.

how to repair or replace a double glazed unit?

Are you about to purchase a double glazed unit and wondering how to go about the replacement project? If yes, then you’re at the right place. Firstly, it’s advisable to hire the services of a reliable professional who can guarantee the best results for help especially if you lack proper training and experience in the field. However, we’ve put together this step by step guide to provide you with a detailed information about the double glazed unit replacement process. Let’s get started!

The tools and materials you require for the project includes tape measure, hammers, nail punch, scraper, spacing blocks, non-hardening butyl putty, high-security glazing tape rolls and beading tacks.

• Work out the glass size required. Simply use the tape measure to measure from frame edge to frame edge while also taking note of the thickness.

• When about to order, inform the glass merchant that the measurement provided are frame-tight. This will make him reduce the dimension a little bit, mostly by 5mm for clearance.

• Remove the beading and ensure to support the glass while doing so. If the glass units are fitted in wooden windows, you may need to cut the putty-based compound they’re normally sealed with to remove the glass.

• Lay out the beading in the window’s shape to make for easier refitting later on.

• If you’re working on wooden frames, wipe out all traces of excess installation compound using a scraper and clean the rebate with a soft brush.

• Trial fit the double glazed windows to ensure they’d slide into the frame without being forced.

• Plastic frame windows are usually in between a pair of gaskets, you should replace this with a hight security glazing tape. While for a wooden frame, simply apply strips of flexible non-setting butyl putty or high-security glazing tape on either sides of the glass.

• Install and centralize the glass in the frame.

• Press the nail wooden beading or plastic beading back into place.

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 Grantham.

Pick the right pro for you

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

Are you a Window Installer in Grantham?

View our open Window Installer jobs near you

Join today
View Shortlist