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Verified ProOver 50 Reviews
Crystal is a uPVC Windows and Double Glazing manufacturer and installer. We have built a strong reputation in London and t...
Verified Pro

Radiant Design & Build

1 review(s)
Offers services in HARWICH
Radiant Design & Build has been established as a sister company to both Radiant Windows and Universal Aluminium. Concentra...
Verified Pro

DGN Building

0 review(s)
Offers services in HARWICH
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Recent Window Installer Enquiries

14 Sep

Windows | uPVC

Harwich - CO12

Enquiry from: Richard B

Start Date: Immediate

Repair to sealed units 4 units in number

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16 Jul

Windows | uPVC

Harwich - CO12

Enquiry from: Lyn B

Start Date: Immediate

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

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04 Dec

Windows | uPVC

Harwich - CO12

Enquiry from: Jonathan E

Start Date: Immediate

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

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24 Nov

Windows | uPVC

Harwich - CO12

Enquiry from: Sue H

Start Date: Immediate

A new double glazed window in kitchen 6' x 3'

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03 Nov

Windows | uPVC

Harwich - CO12

Enquiry from: Glen B

Start Date: Immediate

I have had a door fitted by Safestyle, the work was not completed and the company has gone bust. Would you be able to quote me on completing the work please?

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23 Apr

Windows | uPVC

Harwich - CO12

Enquiry from: Tanya J

Start Date: Immediate

customer living in harwich area made an enquiry for double glazing quotes via one of our websites. customer confirmed interest via / sms at 08:17 homeowner needs advice on options 2+ windows supply a...

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10 Mar

Windows | uPVC

Harwich - CO12

Enquiry from: Luis W

Start Date: Immediate

Supply and fit two windows in the garage. The large window is 1.44cm wide and 89 cm height. The windows are located in a garage/outdoor building. I hope to hear from you soon Luis

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08 Nov

Windows | uPVC | Repair

Harwich - CO12

Enquiry from: Frances C

Start Date: Immediate

window unable completely closed are you the property owner: owner of the property property type: other what service are you looking for: other how many windows are involved: one what material is the w...

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17 May

Windows | uPVC

Harwich - CO12

Enquiry from: Jo P

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: detached ho...

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25 Feb

Windows | uPVC

Harwich - CO12

Enquiry from: Melissa M

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: terrace how...

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29 Oct

Windows | uPVC

Harwich - CO12

Enquiry from: Shaun W

Start Date: Immediate

Are you the home owner of that property? Yes How many windows are you considering replacing? 6 What material do you require, UPVC? UPVC What colour do you want them to be? Unsure Do you require doo...

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27 Jul

Windows | uPVC

Harwich - CO12

Enquiry from: Jen K

Start Date: Immediate

customer is looking to have windows installed. they are unsure what options to go for so would like to discuss directly multiple windows to be supplied and installed please call to quote. are you the...

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26 May

Windows | Glazing

Harwich - CO12

Enquiry from: Nasrin K

Start Date: Immediate

secondary glazing 2 bedrooms, double glazed period windows, kitchen times 2, bathrooms times 2, stairwell times 2

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01 Dec

Windows | uPVC

Harwich - CO12

Enquiry from: Donna G

Start Date: Immediate

windows and doors

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05 Apr

Windows | uPVC

Harwich - CO12

Enquiry from: GILLIAN C

Start Date: Immediate

Homeowner 2+ windows UPVC Supplied and fitted Please contact to appoint

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04 Feb

Windows | uPVC

Harwich - CO12

Enquiry from: Clare B

Start Date: 1 to 3 months

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 windows do you need: 4+ Window Material: uP...

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13 Nov

Windows | uPVC

Harwich - CO12

Enquiry from: Terry L

Start Date: Immediate

*Property owner 9 windows uPVC Supplied and fitted Please call to appoint

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21 Jul

Windows | uPVC

Harwich - CO12

Enquiry from: Gill L

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Semi detached How many bedrooms do you have: 3-4 Rooms Have you thought about Solar panels: No Time scale: Immediate Other Forms: 35 A...

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08 Jun

Windows | uPVC

Harwich - CO12

Enquiry from: Linda S

Start Date: Immediate

Home Owner UPVC Supplied and Fitted Please Call to Appoint

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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 Harwich is:

£2,150

Window Installer job Window Installer cost in 2025
Double glazing in Harwich £2,250-£4,500
Upvc double glazing units only in Harwich £650-£1,600
Triple glazing in Harwich £2,250-£4,500
Aluminium windows in Harwich £3,438-£4,938
Wooden window in Harwich £2,125-£3,875
Aluminium windows supply only in Harwich £1,800-£2,950
Upvc or wood porch in Harwich £3,313-£5,013
Sash window in Harwich £2,400-£5,000
Glaziers in Harwich £54-£144
Secondary glazing in Harwich £2,250-£4,500
uPVC Single Window in Harwich £363-£1,173
Wooden sash windows in Harwich £2,125-£3,875
Wooden windows supply only in Harwich £1,630-£4,570
Aluminium repair in Harwich £240-£360
Window repair in Harwich £159-£451
Wooden window repair in Harwich £210-£740

Related Window Installer searches in Harwich

Window Installer FAQs

Do I need to stay at home while my windows are being replaced?

Most installers will not need you to be at home while they are fitting your windows. It is a good idea to be present though, just in case they have any questions for you and perhaps for your own peace of mind. If you cannot be there, you will need to arrange access to the property and/or agree securing the property at the end of the day.

How much money will I save with double glazing?

By replacing the single glazed windows in your home you stand to make savings of around £170 each year. It’s not just the financial gain that makes double glazing attractive though and you can also save up to 680kg of carbon emissions annually. Over 20 years this is a saving of around £3,400 and 13,600kg of CO2.

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.

Can I fix glass on one side of a double glazed window?

Unfortunately, you can’t fix the glass on one side of a double glazed window. That’s because they’re sealed units – once one pane of glass is broken, that will break the seal and its thermal insulation properties will be lost.

The good news is that if your window frame is still looking great, there’s no need to replace that. You can simply replace the glass in the window, which will cost much less. You can look to spend around £250 on a sealed unit, whereas a whole replacement single window may cost up to £600.

When an installer comes to replace the glass in your double glazed window, they will survey the inside and outside of your home around the window, then move any furniture by the window so they’ve got access. They should then pop a dust sheet down to stop any debris from getting on your floor.

Then, the installer will carefully remove the beads from the frame. They will then lift the glass out of the frame and put it somewhere safe before cleaning out all of the dust and any debris that has found its way into the frame. Using spacers at the bottom of the frame, the installer will make sure that the sealed unit is square in the frame to get a good fit. Once they’re happy, they will replace the beading and make sure it looks perfect before cleaning up their tools.

You could have a go at replacing the glass on a double glazed window yourself, but it’s not recommended. Leave it to the professionals who will know exactly what to do and will be able to do it quickly and safely.

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.

What is uPVC?

uPVC is unplasticised polyvinyl chloride. It is a favourite amongst homeowners and manufacturers for its cheap production cost and excellent benefits. uPVC is used for window frames, conservatories and doors. In fact, uPVC can be three times cheaper than wooden frames and is also the most energy efficient option.As well as this, uPVC is now available in a range of colours other than the typically seen bright white finish. It can also be recycled, is durable and resistant to changing weather conditions.

Where can I get one double glazed window?

Most window installers will be able to provide you with one double glazed window and fit it for you. If you’re replacing one double glazed window in your home, ask them to try and source the same windows that you already have or find one that’s very similar. Externally, you probably won’t be able to notice the difference, but if your existing windows are very old there may be some exterior discolouration and the locks and handles might look slightly different.

If you want one double glazed window so you can fit it yourself, there are lots of online companies that can supply you with one window. However, window fitting is a skilled trade and you might want to consider whether you have the right tools and experience to fit it yourself. Of course, you’ll save money on installation costs, but if something goes wrong, you might end up shelling out to get it fixed anyway.

The other thing to consider is that any replacement windows need to be certified that they meet Building Regulations. If you fit the double glazed window yourself, you’ll need to apply to your local council building control officer to get a certificate that confirms that you fitted the window within the regulations. You’ll have to pay a fee for this, and it will be even more expensive if Building Control say that the window hasn’t been fitted within the regulations and you have to start again.

The alternative is to ask a reputable window installer that is registered with a self-certification scheme, like FENSA, to install the window. That means that they can self-certify that the window meets building regulations once they’ve finished the installation.

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