Find a Window Installer you can trust in Knebworth.

Choose from 185 Window Installers, all rated by people like you.

Over 546 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
Verified Pro
Highpoint Roofing a family run business. We like to work to a high standard we cover all types of roofing services. We h...
Verified ProOver 50 Reviews

WFS Anglia

59 review(s)
Offers services in KNEBWORTH
Here at WFS Anglia Ltd, we have built ourselves a fantastic reputation throughout Cambridge, Northamptonshire, Peterboroug...
Verified Pro

Parkhall Roofing Services

5 review(s)
Offers services in KNEBWORTH
Parkhall Roofing Services - Your Trusted Roof Specialists in Milton Keynes Hey there! We're Parkhall Roofing Services, an...
Verified ProOver 50 Reviews

Safestyle Uk

375 review(s)
Offers services in KNEBWORTH
We've been fitting double glazing in your area since 1992 and there has never been a better time to get a quote from Safes...
Verified Pro

HomeFix Roofing

0 review(s)
Offers services in KNEBWORTH
Welcome to HomeFix Roofing Ltd. We have over 30 years experience in the roofing and Building trade and pride ourselves in ...
Verified Pro

New Trend Builders

0 review(s)
Offers services in KNEBWORTH
New Trend Builders Ltd - Your Comprehensive Building and Renovation Experts in Kent and London Located in the vibrant c...

Recent Window Installer Enquiries

11 Jun

Windows | uPVC | Single Window

Knebworth - SG3

Enquiry from: Claire B

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 require them to be...

Post a similar request >

05 May

Windows | Velux

Knebworth - SG3

Enquiry from: Chris M

Start Date: Immediate

awaiting plans for loft conversion Are you the property owner: Owner of the property Do you require any windows: Dormer Agreed to recieve quotes for selected products: Yes Do you require plumbing ...

Post a similar request >

17 Aug

Windows | uPVC

Knebworth - SG3

Enquiry from: Sarah B

Start Date: 1 to 3 months

3+ windows UPVC Supplied and fitted Please contact to appoint House number - 21 Property owner at this address 10 windows to be replaced Please call her to book an appointment *

Post a similar request >

13 Aug

Windows | uPVC

Knebworth - SG3

Enquiry from: Sarah B

Start Date: 1 to 3 months

3+ windows UPVC Supplied and fitted Please contact to appoint House number - 21 Property owner at this address 10 windows to be replaced Please call her to book an appointment *

Post a similar request >

30 Jun

Windows | uPVC

Knebworth - SG3

Enquiry from: Stephen W

Start Date: Immediate

homeowner 15 windows 1 door UPVC Supplied and fitted 1-3 months please contact to appoint *

Post a similar request >

22 Jun

Windows | uPVC

Knebworth - SG3

Enquiry from: Stephen W

Start Date: Immediate

Home Owner 6 windows UPVC Supplied and Fitted Please Contact to Appoint *

Post a similar request >

12 Mar

Windows | uPVC

Knebworth - SG3

Enquiry from: H

Start Date: Immediate

Home Owner New Front and back door, back kitchen window, patio doors, small downstairs toilet window, upstairs wide and shallow bathroom window, ensuite bathroom window, 2 large and one smaller bedr...

Post a similar request >

15 Jul

Windows | uPVC

St. Albans - AL2

Enquiry from: Gail N

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 ...

Post a similar request >

20 Jun

Windows | uPVC | Single Window

Abbots Langley - WD5

Enquiry from: Wijey S

Start Date: Immediate

quote for installing a new upvc 1200 x 1200 window on the outside wall, located above the stairway landing of the detached property. this involves, obtaining planning approval, opening a cavity wall...

Post a similar request >

22 Apr

Windows | uPVC

Potters Bar - EN6

Enquiry from: Leigh H

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 ...

Post a similar request >

12 Apr

Windows | uPVC

Waltham Abbey - EN9

Enquiry from: Kate P

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 ...

Post a similar request >

09 Apr

Windows | uPVC

Potters Bar - EN6

Enquiry from: Leigh H

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 ...

Post a similar request >

03 Apr

Windows | uPVC

St. Albans - AL2

Enquiry from: Fin M

Start Date: Immediate

looking for new windows and a new front door on a bungalow

Post a similar request >

01 Mar

Windows | uPVC

Barnet - EN4

Enquiry from: Maria D

Start Date: Immediate

customer has a windows project they are looking to have done, specially they want quotes for upvc double glazing. they are unsure of options so would like to discuss with a window installer.confirmed ...

Post a similar request >

21 Feb

Windows | uPVC

Hemel Hempstead - HP1

Enquiry from: Graeme E

Start Date: Immediate

homeowner 9 windows 3 doors upvc supplied and fitted please call to appoint

Post a similar request >

14 Feb

Windows | uPVC

Hemel Hempstead - HP1

Enquiry from: Graeme E

Start Date: Immediate

our house was built in 1971, 4 bed-roomed detached. The double glazing is 30 years old. 9 windows replaced and back and front doors plus single patio door.

Post a similar request >

07 Nov

Windows | Glazing

St. Albans - AL2

Enquiry from: Karen H

Start Date: Immediate

Quote is for a secondary glazed window to be supplied only (NOT fitted) Call back anytime. Type of window / door: Window Glass replacement only: No Number of windows requiring repair: 1 Numbe...

Post a similar request >

11 Oct

Windows | uPVC

Waltham Cross - EN8

Enquiry from: Bev L

Start Date: Immediate

Are you the home owner of that property? Yes How many windows are you considering replacing? 7 What material do you require, UPVC? UPVC What colour do you want them to be? White Do you require doors I...

Post a similar request >

08 Aug

Windows | uPVC

St. Albans - AL1

Enquiry from: Alice T

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 ...

Post a similar request >

12 Jul

Windows | uPVC | Single Window

Barnet - EN5

Enquiry from: Nick K

Start Date: Immediate

Sell 1 Times 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 I assume...

Post a similar request >

How much do Window Installer services cost?

How much do Window Installers cost? Prices for Window Installers in 2024 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 Knebworth is:

£1,945

Window Installer job Window Installer cost in 2024
Double glazing in Knebworth £1,500-£5,000
Upvc double glazing units only in Knebworth £800-£1,200
Velux windows in Knebworth £675-£1,035
Triple glazing in Knebworth £1,500-£5,000
Aluminium windows in Knebworth £1,875-£2,875
Wooden window in Knebworth £3,750-£5,750
Aluminium windows supply only in Knebworth £2,600-£3,900
Upvc or wood porch in Knebworth £2,625-£4,025
Sash window in Knebworth £1,800-£6,000
Glaziers in Knebworth £57-£87
Secondary glazing in Knebworth £1,500-£5,000
uPVC Single Window in Knebworth £225-£345
Wooden sash windows in Knebworth £3,750-£5,750
Wooden windows supply only in Knebworth £2,760-£4,140
Aluminium repair in Knebworth £240-£360
Window repair in Knebworth £268-£402
Wooden window repair in Knebworth £320-£480
Sun Tunnel in Knebworth £700-£1,000

Related Window Installer searches in Knebworth

Window Installer FAQs

How to fix a cracked glass window?
You can end up with a cracked glass window in a few ways. The most common one is when a rogue stone in the lawnmower hits the window or someone’s cricket or tennis game goes wrong and you end up with a ball through the window. Youi often end up with a ‘bullseye’ type crack that expands out from the point of impact. You can also get pressure and stress cracks from intense fluctuations in pressure and temperature. Unfortunately, there’s no way you can permanently fix cracked windows without replacing the entire sealed unit. An installer can replace a cracked glass window in less than an hour simply by taking out the sealed unit (the two panes of glass in double glazed windows) and replacing it with a new one. It costs an average of £110, but you could try to do it yourself for around £55. But what if you can’t get an installer to fix your window straight away? There is a DIY method you could try. As a temporary fix for your glass window, you can use a solvent-based adhesive like epoxy which will keep the glass intact and prevent further damage. You’ll also need:
  • Washing up liquid
  • Glass cleaner
  • A lint-free cloth or rag
  • A putty knife
  • A paper plate
  • Acetone
First, you’ll want to clean the glass using the washing up liquid and a damp cloth to remove any dust or oils. Leave it for a few minutes to dry, then create a mixture of epoxy by combining the hardener and the resin and stirring it on a paper plate. Using the putty knife, spread the mixture on the cracks, making sure you press gently to fill them. Leave it for at least 5 minutes to dry, then get rid of any excess by using some acetone on a dry cloth. Clean the window using some glass cleaner and another dry cloth, and you should have a temporary fix!
Can I set up a sun tunnel myself?

It is constantly important to consider your skill degree as well as your physical capacity when picking to tackle a Do It Yourself task. Generally, sun tunnel setup is not made to be tried by anybody without experience and training for the following reasons:

  • You will likely need professional devices which may include scaffolding.
  • It is really unsafe to deal with a roofing as a result of the danger of falling.
  • Your sun tunnel have to be appropriately secured to avoid leaks as well as drafts coming through your roofing.
  • This installment is not a straightforward, easy job. It involves eliminating roofing ceramic tiles, attaching a panel, thoroughly installing the passage and also even more.
What is the Window Energy Rating (WER)?

The energy efficiency of windows is measured using ratings, varying from A, the most efficient, to G, the least efficient. This scheme is run by the British Fenestration Council (BFRC). To comply with Building Regulations you’ll need windows of energy efficiency at least level C.

What is the Velux Active home kit?

Velux installers offer the Velux Active home kit. This provides an automated system to enhance your indoor living. With its sensor-based ventilation apparatus, the Velux active home kit’s smart sensors repeatedly monitor your home’s temperature, humidity and CO2 levels for its optimum healthy living standards.

Sensor-based ventilation
Velux Active tracks temperature, humidity and CO2-levels, and ventilates to keep your indoor climate nice and healthy.

Automatic heat protection
Velux Active automatically protects your home from excessive heat by closing your Velux Integra blinds, awnings and shutters on hot days.

Set personal preferences
Want to swap your alarm clock for a sunrise or air out while you’re at work? Customise your indoor climate with Velux Active.

Voice-control and smart speaker integration come standard with VELUX ACTIVE with NETATMO, enabling you to draw the shades or open the windows just by asking.

How long do double glazed sealed units last?
When it comes to how long double glazed sealed units (the glass inside the window) last, a lot of it is down to the quality of the glass and the environment that your windows sit in. It’s not uncommon for your window frames themselves (especially if they are uPVC) to last longer than your sealed units. Sealed units are called that because they’re two panes of glass sealed together with an air gap in between. They use what’s called a ‘perimeter seal’ to protect the air gap between the panes, and is usually made of butyl mastic which retains a desiccant within a perforated metallic spacer bar. The desiccant’s job is to absorb any moisture which finds its way into the air gap to stop your window from misting up on the inside. When a sealed unit fails, or is ‘blown’, it’s usually because moisture builds up around the seal and causes it to fail. Sealed units won’t last forever, so you will eventually end up with condensation inside the panes of your double glazing, but in an ideal environment your double glazed sealed units could last up to 30 years, with some manufacturers claiming as long as 40 years. But they do require a bit of maintenance and the position of your windows will also make a difference as to how long they last. There are a few things that determine how long a sealed unit will last:
  • Climate - If your window faces south, it will be subject to direct sunlight for a lot of the day. This tends to cause the sealed unit to fail more quickly – a south-facing window may last between 10-25 years. This is because the spacer bars will twist as the temperature rises and causes the adhesive holding them together to eventually fail.
  • Moisture - Windows in kitchens and bathrooms tend to fail more quickly because they come into contact with moisture more often. For example, if water gets on your windowsill when you shower, the seal around the glass will come loose more quickly if it’s constantly wet.
When you replace the sealed units in your windows or get completely new double glazing, make sure you choose an installer that uses quality products and will take all the steps to ensure that your sealed units are kept away from moisture as much as possible.
How to open Velux windows?

If you’ve never had Velux windows before, you might be wondering how to open them. If you’ve got very high ceilings and your roof windows are set high up in the pitch of the roof, you might not even be able to reach them. So how do you open them in this case?

When Velux windows are installed so high that they’re out of reach, the installers will often recommend that they install an electric switch for you to open and close your windows. They often come with a rain sensor, so you don’t need to rush up to the top of the house if there’s a sudden downpour – they will close automatically. You can also choose to have a remote so you can open and close your roof windows wherever you are in the room.

If you don’t have an electric switch, but you still can’t reach to open and close your Velux windows, you should be supplied with a telescopic pole when they’re installed. If you weren’t or you’ve moved into a home with roof windows and there isn’t one, you can buy them online. They have a hook on the end and can be extended to the correct length so you can hook it over the handle of the window and pull or push to open it.

If you’ve got a top-hung Velux window that can also be opened in a centre-pivot position, it’s easy to switch between the two. Simply ensure the window is completely closed before you start, then open the handle up – but don’t push it out. Then pull the vent bar down until the sash is rotated 180 degrees. Then secure the position by sliding the barrel bolts into the holes at either side of the bottom of the frame. Easy!

how long does double glazing last?

Just like every other thing in your house, your double glazed windows have an expected lifespan attached to it as it gradually becomes less functional and less efficient over time. Although there are actually top quality windows which are able to last a very long time, but the fact still remains that nothing can stand the test of time or last forever. Even the best quality double glazed windows will eventually need to be replaced at some point. So exactly how long do double glazing windows last before need a replacement?

To make it brief, most double glazing window units are typically expected to last an average of 20 years. This number of years can, however, vary within the range of 10 to 35 years based on the several factors such as the type, quality of materials as well as installation and where the windows are located.

The reason for the depreciation in double glazing windows is, over time, the windows may be subjected to some wear, tear as well as all kinds of minor damages which includes gas filled insulated glazing unit slowly and gradually leaking. According to the Centre for Sustainable Energy, the evaporation of 25 percent of gas will ultimately minimize the windows’ thermal performance. And when this occurs, fitting a secondary glazing measure or replacing the windows should be put into consideration.

Another factor leading to the gradual depreciation in double glazing windows over time has to do with condensation. When the window collects between the layers of glass due to the failure of the seal of the perimeter and the saturation of the desiccant, can only be solved by IGU replacement.

And finally, the ravages of time also has a way of taking its toll on double glazing windows. This can happen in so many ways such that the window becomes a lot less efficient and later needing to be replaced.

What if my home isn’t suitable for double glazing?

Some properties are unable to have double glazing, especially those in conservation areas or listed buildings. To counter this problem and still benefit from a warmer home and cheaper bills, secondary glazing is an option. Secondary glazing is a second pane fitted inside your original window. Secondary glazing will still save you around £105 yearly.

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 Knebworth.

Pick the right pro for you

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

Are you a Window Installer in Knebworth?

View our open Window Installer jobs near you

Join today
View Shortlist