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Alexander Constructors

0 review(s)
Offers services in BLACKWOOD
South Wales, Penarth based design and build contractor. Projects completed include new houses, extensions, kitchens, bathr...

BDS Windows & Doors

0 review(s)
Offers services in BLACKWOOD
BDS Windows and Doors offer the very highest specification and installation of our products. Whether you’re a homeowner sh...

Bond Windows

0 review(s)
Offers services in BLACKWOOD
Hi thank you for taking the time to consider Bond Windows. We are a small family run company based in Bristol. From a ...

B W M

3 review(s)
Offers services in BLACKWOOD
BWM are a family run business based in Wales that manufacture UPVC and Aluminium windows, doors and bi-folds. As well as i...

Heronhurst Window & Doors

0 review(s)
Offers services in BLACKWOOD
Heronhurst Window and Door Studio are the most recommended family window and door company in Wales with well over 2,000 ve...

Recent Window Installer Enquiries

14 Oct

uPVC Double Glazing

Treorchy - CF42

Enquiry from: Christine R

Start Date: Immediate

Considering a range of options 2+ windows Supply and install

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23 Sep

uPVC Double Glazing

New Tredegar - NP24

Enquiry from: Sylvia D

Start Date: Immediate

Considering a range of options 2+ windows Supply and install

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19 Sep

Window Repair

Cardiff - CF23

Enquiry from: Frank W

Start Date: Immediate

My windows and doors and the back door handle needs replacing

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20 Aug

uPVC Double Glazing

Newport - NP19

Enquiry from: Joe R

Start Date: Immediate

2+ windows Supply and install

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08 Aug

uPVC Double Glazing

Cardiff - CF23

Enquiry from: Firezer T

Start Date: Immediate

2+ windows Supply and install

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01 Aug

Window Repair

Caerphilly - CF83

Enquiry from: Keith J

Start Date: Immediate

Wooden window repair Lead Wooden window repair Lead Wooden window repair Lead

Double glazed window needs seal replaced 12 ft x 8ft

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28 Jul

uPVC Double Glazing

Newport - NP18

Enquiry from: Justin E

Start Date: Immediate

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25 Jul

Replacement Glass Only

Caerphilly - CF83

Enquiry from: Sian M

Start Date: Immediate

I have staybrite windows, but my seals on the inside have gone yellow, can I buy them through you please

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01 Jul

uPVC Double Glazing

Cardiff - CF5

Enquiry from: Donna W

Start Date: Immediate

2+ windows supply and install

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30 Jun

uPVC Double Glazing

Newport - NP10

Enquiry from: Emelia D

Start Date: Immediate

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27 Jun

Window Repair

Treorchy - CF42

Enquiry from: Gareth D

Start Date: Immediate

Wooden window repair Lead

Replacing the four blown sealed units or supplying and fitting one completely new window. the measurements for the blown frosted units are: 2 × 1305mm (h) × 835mm (w) 2 × 455mm (h) × 755mm (w) the

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02 Jun

uPVC Double Glazing

Newport - NP11

Enquiry from: Rena M

Start Date: Immediate

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01 Apr

uPVC Double Glazing

Blackwood - NP12

Enquiry from: Diane H

Start Date: Immediate

2+ windows Supply and install

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28 Jan

uPVC Double Glazing

Blackwood - NP12

Enquiry from: Shannon M

Start Date: Immediate

What best describes your living situation? - -. How many windows are you considering replacing? - -. What material do you require, UPVC? - -. What colour do you want them to be? - -. Do you require do

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22 Jan

uPVC Double Glazing

Blackwood - NP12

Enquiry from: Jason R

Start Date: Immediate

What best describes your living situation? How many windows are you considering replacing? - 8. What material do you require, UPVC? - upvc. What colour do you want them to be? - white. Do you require

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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 Blackwood is:

£2,082

Window Installer job Window Installer cost in 2026
Double glazing in Blackwood £1,500-£5,000
Upvc double glazing units only in Blackwood £800-£1,200
Triple glazing in Blackwood £1,500-£5,000
Aluminium windows in Blackwood £1,875-£2,875
Wooden window in Blackwood £3,750-£5,750
Aluminium windows supply only in Blackwood £2,600-£3,900
Upvc or wood porch in Blackwood £2,625-£4,025
Sash window in Blackwood £1,800-£6,000
Glaziers in Blackwood £57-£87
Secondary glazing in Blackwood £1,500-£5,000
uPVC Single Window in Blackwood £225-£345
Wooden sash windows in Blackwood £3,750-£5,750
Wooden windows supply only in Blackwood £2,760-£4,140
Aluminium repair in Blackwood £240-£360
Window repair in Blackwood £268-£402
Wooden window repair in Blackwood £320-£480

Related Window Installer searches in Blackwood

Window Installer FAQs

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.
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.

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 much are new windows?

Are you about to replace your old windows and wondering just how much it’ll cost to have a new one fitted? If yes, then you’ve come to the right place! The question is a very straight forward one, however a direct answer can not be provided as determining window prices for a replacement project can be a very tricky challenge. With a plethora of influencing factors that can play a key role in the price of both materials and labour to be used, it could be extremely hard for a window installer to provide a cost estimate without paying you a visit beforehand.

The factors that can go a long way in determining the price of your new window includes the size of the window, frame material, style chosen, your location, rates charged by the window installer (these rates can be different from an installer to an installer, so it’ll probably be in your best interest to compare quotes to identify the most competitive price) as well as the type of glass required.

Generally, for a small flat featuring four windows, the average cost for new windows would be between the range of £2,100 to £2,300. This range provided covers the cost of double glazed uPVC casement windows as well as the installation price. In the same tone, a home with up to 8 windows will have an average cost for window replacement between the range of £4,400 to £4,600, wile also taking into account the installation price. Whereas a house comprising 10 windows could begin at an average cost of window replacement between the the range of £5,200 to £5,500, and a 15 window home will be between the range of £8,400 to £8,600. it should be noted that the aforementioned figures only include the standard number of windows with a uPVC frame and the installation cost.

Why aluminium windows?

Aluminium windows have a range of benefits that make them a great alternative to uPVC windows. Developments in technology have meant that modern aluminium windows now have the same energy efficiency levels as uPVC. Plus, their strength and flexibility make them a more attractive choice to many homeowners, particularly for more modern buildings.

Aluminium frames are typically much thinner than uPVC frames, allowing more light in and wider views. The metal can also be moulded to suit custom shapes, making it ideal for unusually shaped windows. Aluminium windows are available in lots of different colours, so can be designed to suit a wide range of interiors and exteriors.

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 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.

Can you repair blown double glazed windows?

You can only repair blown double glazed windows in the sense that you can replace the sealed unit (the glass part of the window) instead of having to replace the entire window.

When a double glazed window is blown, it means that the seal around the window has failed and is now letting air in and out. Often the first sign that the sealed unit has blown is condensation on the inside of the window, which is annoying since there’s no way to get rid of it! When your sealed unit has blown, you’ll be losing heat out of the window, meaning you could be spending more on your energy bills.

As a temporary fix, you could see if you can buy a misting repair kit online, but the condensation will eventually occur again as the air gets in. The best thing to do is ask a window installer or glazier to replace the sealed unit for you.

It's simple to replace the glass in a window – the specialist will remove the beading around the window, remove the blown glass from your window frame and set it to one side. They will then clean up around the frame before adding spacers in, then fitting the new sealed unit into the frame. They’ll make sure it’s a snug fit before replacing the beading back around the window to secure it.

There's no reason to put off repairing a blown double glazed window since the cost is generally much less than replacing the entire thing. A sealed unit with installation costs an average of £100, whereas a completely new window will cost around £400. You’ll soon notice that it’s less draughty and will be able see out of your window once you’ve had the blown glass replaced.

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