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Verified ProOver 50 Reviews

Britelite Windows

156 review(s)
Offers services in HARPENDEN
We fit high quality double glazing and the next generation triple glazing, using only the best materials. Fully guaranteed...
Verified ProOver 50 Reviews

Crystal Windows and Doors

64 review(s)
Offers services in HARPENDEN
Crystal is a uPVC Windows and Double Glazing manufacturer and installer. We have built a strong reputation in London and t...
Verified Pro

Simply Doors

0 review(s)
Offers services in HARPENDEN
With over 10 years experience in the trade we are a local family run home improvement company specialising in Upvc and com...
Verified Pro

MCC Service London

0 review(s)
Offers services in HARPENDEN
MCC Services London Ltd. is a specialist building company located in North London and covering all of London and the surro...

Recent Window Installer Enquiries

18 Mar

Windows | uPVC

Harpenden - AL5

Enquiry from: ALLY M

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? / Do you require doors If so how ...

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15 Dec

Windows | uPVC

Harpenden - AL5

Enquiry from: Jeremy N

Start Date: Immediate

Replacement sealed glazing unit 1100mm x 970mm on the ground floor, looking for an approximate cost. Thanks

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16 Nov

Windows | uPVC | Single Window

Harpenden - AL5

Enquiry from: Lester F

Start Date: Immediate

sell 1 times are you the home owner of that property? joint homeowner how many windows are you considering replacing? 1 what material do you require, upvc? upvc what colour do you want them to be? wh...

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10 Sep

Windows | uPVC

Harpenden - AL5

Enquiry from: John C

Start Date: Immediate

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

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05 Sep

Building Work | Porch

Harpenden - AL5

Enquiry from: Daryl B

Start Date: Immediate

Looking to create a porch area on our terraced property. Porch to contain a small coat rack and boiler. Work needed to completed asap.

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14 May

Windows | uPVC

Harpenden - AL5

Enquiry from: Ting G

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.customer lives in the harpenden area and would like a call to discuss...

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01 Apr

Windows | uPVC

Harpenden - AL5

Enquiry from: Kathleen B

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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21 Mar

Windows | uPVC

Harpenden - AL5

Enquiry from: Kenny M

Start Date: Immediate

customer in harpenden 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.plea...

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13 Oct

Windows | uPVC

Harpenden - AL5

Enquiry from: Rubina F

Start Date: Immediate

windows - flush upvc windows in white for the whole house with half georgian astragal bars. door - a large set of sliding doors, two sets of french doors and a side door. i am looking for quotes for ...

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08 Jun

Windows | uPVC

Harpenden - AL5

Enquiry from: Tim D

Start Date: Less than one month

best time: any work type: upvc windows

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19 Mar

Windows | Wooden | Repair

Harpenden - AL5

Enquiry from: Philip D

Start Date: 1 to 3 months

Replacement of slim-line sealed double-glazed units (wooden frames) Number of Windows: 5+ Windows Need Doors: Back Door Material: Wood Are you the property owner: Owner of the property What level of s...

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30 Jan

Windows | uPVC

Harpenden - AL5

Enquiry from: Alex M

Start Date: Immediate

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

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24 Jan

Building Work | Porch

Harpenden - AL5

Enquiry from: Esra E

Start Date: Immediate

Are you the home owner of that property? YES Are you replacing an existing porch or is this a new build? New Build What material do you require, UPVC? UPVC What colour do you want it to be? White I as...

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14 Dec

Windows | uPVC

Harpenden - AL5

Enquiry from: Mark D

Start Date: Immediate

Passanger quarter window replacement

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04 Oct

Windows | Glazing

Harpenden - AL5

Enquiry from: Greg H

Start Date: Immediate

Customer visited the mywindowsprices.co.uk site and submitted an enquiry. Glazing type: Double, Work description: Install three sets of French doors Are you the property owner: Owner of the property W...

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29 Mar

Windows | uPVC

Harpenden - AL5

Enquiry from: Fiona M

Start Date: Immediate

Home Owner UPVC Supplied and Fitted Call to Appoint

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04 Dec

Windows | uPVC

Harpenden - AL5

Enquiry from: Paul B

Start Date: Less than one month

*Property owner 2+windows uPVC Supplied and fitted Please call to appoint

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01 Dec

Windows | uPVC | Single Window

Harpenden - AL5

Enquiry from: Paul B

Start Date: Less than one month

I am looking for quotes for 1 uPVC 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 ...

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30 Aug

Windows | uPVC

Harpenden - AL5

Enquiry from: Suzanne C

Start Date: Less than one month

*Property owner 2+windows uPVC Supplied and fitted Please call to appoint

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30 Aug

Windows | Wooden

Harpenden - AL5

Enquiry from: Suzanne C

Start Date: Less than one month

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: 1 Window Material: Woo...

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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 Harpenden is:

£2,082

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

Related Window Installer searches in Harpenden

Window Installer FAQs

Will a new double glazed window look different to existing ones?

It depends on a few factors whether a new double glazed window will look different to existing ones. If your existing windows are very old, perhaps 10 years or more, then it’s likely that there will be some small differences.

The first thing to remember is that your double glazing is exposed to the elements as soon as it’s installed. So over time, unless you’re very good at cleaning and maintaining your windows, they’re likely to look a bit dirty. Window frames that are south-facing may also become slightly discoloured from the sun, so if you install a new window right next to it you might notice a difference.

Also, there have been lots of technical advances in windows over the years. If your existing windows are significantly older, you might notice a difference in the handles on openers, and if your existing windows were installed before 2010 they might not have trickle vents, which is an extra strip on the inside of your window to keep air flowing through your home. While it’s not a legal requirement for replacement windows to have trickle vents if the original one didn’t, it’s a good idea to have them installed as they help prevent condensation and mould.

The only truly noticeably different elements to a new double glazed window compared with existing ones are likely to be on the inside, which might not be a problem for you if you only have one window in a room. However, if you know the brand of your existing windows, you can ask your window installer if they can source the same ones. Even if they’ve been updated slightly, the difference should be minimal.

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.

What happens to my old windows?

After fitting your new windows, your installer should take away and dispose of your old windows. If you want to keep them, just let your installer know before they start work. The UPVC frames are melted down and used on the unseen parts of new windows. Aluminium frames are re-smelted and wooden are broken down and used as chipboard.

how deep do footings need to be for a porch?

No matter how big or small a building is, it can only be as good as it’s foundation - and that’s a fact! It all starts from the footing and when it isn’t deep enough, unlike badly installed gutters or gapped hardwood flooring, can make the whole building collapse to the ground. Just like any code recommendations, the depth of the footings of your porch is a parameter that must be complied with and adjusted to suit your local code requirements.

As a rule of thumb, you should always dig below the frost line when excavating your footings. At this depth level, the moisture present in the soil will be frozen. Ultimately, this will help the ground to act as a barrier to insulate the soil below the footing from freezing during the cold months. As a result, in regions where the weather is almost always very cold the depth of your footings is expected to be at least 48 inches. But in areas featuring a warm climate, you may be allowed to install your footings on grade.

In addition, it’s compulsory that your footings must be installed at a minimum depth of 12 inches below unsettled soil. However, if you’re constructing the structure into a steep hill’s side or by the side of a retaining wall, it’s required that you maintain the least distance to grade both vertically and laterally. In the event whereby you need to achieve a good lateral barrier, you’ll need to have your foundation dug a lot deeper compared to if it’s on a flat surface. For a more accurate and updated information, you can consult your local building inspection department to get familiar with the requirements in your area.

How much could I save on my energy bills if I install double glazing?

As well as keeping your home warmer and reducing noise, you’ll notice a saving on your energy bills from installing double glazing. If you install A++ rated windows in your home after having single glazing, you could save up to £120 year on your energy bills. The Energy Saving Trust has more information.

Can the glass in a double glazed window be replaced?
Yes, the glass in a double glazed window can be replaced. The glass in a window, or sealed unit to use its proper name, is not permanently attached to your window frames so if it gets damaged but your frames are still intact, there’s no need to replace the whole window. The glass in your double glazed window might need to be replaced due to:
  • Impact from a stone or other object smashing the glass in a ‘bullseye’ effect
  • The result of a break-in
  • Extreme weather or changes in pressure causing a crack
  • The sealed unit being ‘blown’, meaning that it’s no longer energy efficient due to air leaking out
A lot of window installers will replace the glass in your double glazing for you, but you might need to get quotes from specialist glaziers too. Glaziers deal purely with the glass in windows rather than installing entire frames. It won’t take a professional very long to replace the glass in your window. They will remove the beading from around the window with a pallet knife or chisel, leaving the top one until last to keep the sealed unit stable. Then, they simply lift out the glass carefully and will discuss with you whether the removal of the old sealed unit is included in their quote. Next, they will brush away any dust and debris that’s made its way into the frame and place spacers at the bottom. They will then lift the new glass into the frame, making sure it’s completely square. When they’re happy, they’ll remove the spacers and replace the beading back in reverse order. You’ll notice the replacement glass in your new window straight away as draughts should be eliminated and you’ll be able to see clearly again!
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.

Will double glazing stop condensation?

If you’ve got a problem with condensation and don’t have double glazing, you should find that getting new windows will help. Condensation is caused by warm air meeting a cold surface which then turns into water droplets. With two panes of glass, less heat will escape from your home and keep the window warmer, meaning when steam from the bathroom or kitchen touches your windows there should be less condensation.

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