Find a Window Installer you can trust in Penzance.

Choose from 14 Window Installers, all rated by people like you.

Over 4 reviews & an average rating of 4.9/5 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

Advertisement
View Shortlist

GO ECO Glazing

4 review(s)
Offers services in PENZANCE
About Go Eco Glazing We are based in Plymouth, covering the whole of the south-west. We strive to produce the best prod...

Elegance Windows

0 review(s)
Offers services in PENZANCE
We are a professional family run, local Double Glazing company. We specialise in the supply and installation of high quali...

The Window and Door Store

0 review(s)
Offers services in PENZANCE
We are nationwide suppliers of Upvc and Aluminium windows and doors. From casement windows to 7 leaf bifolding doors; we a...

Supreme Windows

0 review(s)
Offers services in PENZANCE
A family run business specializing in double glazed windows, doors, patio doors, conservatories, porches, fascias and gutt...

Recent Window Installer Enquiries

24 Apr

Replacement Glass Only

Penzance - TR18

Enquiry from: Becky C

Start Date: Immediate

Last night I noticed that the glass in my attic Velux window had shattered. I’m not sure how it happened

Post a similar request >

19 Apr

uPVC Double Glazing

Penzance - TR19

Enquiry from: Rachel B

Start Date: Immediate

2+ windows Supply and install

Post a similar request >

10 Apr

Wooden Window Repair

Penzance - TR20

Enquiry from: Lizzie N

Start Date: Immediate

Wooden window repair Lead

Repairs to 3 x 1st floor wooden windows, approx. 113cm x 88cm. Probably from 1980s 0r 90s although property much older. Accessible from conservatory roof

Post a similar request >

11 Mar

Replacement Glass Only

Penzance - TR20

Enquiry from: Hazel H

Start Date: Immediate

Quote pls for replacement glass to Velux Window

Post a similar request >

12 Jan

uPVC Double Glazing

Penzance - TR19

Enquiry from: Matt G

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

Post a similar request >

16 Aug

uPVC Double Glazing

Penzance - TR20

Enquiry from: Adam B

Start Date: Immediate

Submit your free quote for rated tradespeople

Post a similar request >

31 Jul

uPVC Double Glazing

Penzance - TR20

Enquiry from: Jimmy F

Start Date: Immediate

Considering a range of options 2+ windows Supply and install

Post a similar request >

21 Jul

uPVC Double Glazing

Penzance - TR18

Enquiry from: Stephanie E

Start Date: Immediate

2+ windows Supply and install

Post a similar request >

06 Jan

uPVC Double Glazing

Penzance - TR19

Enquiry from: Darren D

Start Date: Immediate

What best describes your living situation? - -. Are you the home owner of that property? - -. How many windows are you considering replacing? - -. What material do you require, UPVC? - -. What colour

Post a similar request >

02 Jan

uPVC Double Glazing

Penzance - TR19

Enquiry from: Jean N

Start Date: Immediate

What best describes your living situation? Are you the home owner of that property? - -. How many windows are you considering replacing? - -. What material do you require, UPVC? - -. What colour do yo

Post a similar request >

14 Dec

uPVC Double Glazing

Penzance - TR18

Enquiry from: Sigitas V

Start Date: Immediate

Call back anytime

Post a similar request >

09 Dec

uPVC Double Glazing

Penzance - TR20

Enquiry from: Ginnie B

Start Date: Immediate

Are you the home owner of that property? joint How many windows are you considering replacing? 5 What material do you require, UPVC? y What colour do you want them to be? white Do you require doors If

Post a similar request >

09 Dec

uPVC Double Glazing

Penzance - TR18

Enquiry from: Sandra M

Start Date: Immediate

Are you the home owner of that property? - yes joint. How many windows are you considering replacing? - 4. What material do you require, UPVC? - UPVC . What colour do you want them to be? - white. Do

Post a similar request >

03 Dec

uPVC Double Glazing

Penzance - TR18

Enquiry from: Monika M

Start Date: Immediate

Are you the home owner of that property? - yes. How many windows are you considering replacing? - 13. What material do you require, UPVC? - UPVC. What colour do you want them to be? - black. Do you re

Post a similar request >

11 Nov

uPVC Double Glazing

Penzance - TR19

Enquiry from: Susan P

Start Date: Immediate

Are you the home owner of that property? joint how many windows are you considering replacing? - what material do you require, upvc? upvc what colour do you want them to be? white do you require doors

Post a similar request >

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 Penzance is:

£2,082

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

Related Window Installer searches in Penzance

Window Installer FAQs

How long do aluminium windows last?

How long your aluminium windows will last depends on their quality. They should last 20 -30 years at least, but have been known to stay in good condition for up to 45 years. This is considerably longer than uPVC and wooden double glazing.

How to measure the glass for a window replacement?
If the glass in your window has been damaged, you might only need to replace that rather than your whole window frame. Common reasons for needing to replace the glass in your window include:
  • The glass has smashed from an impact such as a stone hitting it from a lawnmower
  • You have been broken into and suspects used the window to gain entry
  • The glass has blown (lost its airtightness) from constant water build-up around the seals, which is common in bathrooms
  • Extreme weather or pressure changes have caused a crack
If your frames are still intact and there’s nothing wrong with your window’s locks or trims, there’s no reason why you can’t just replace the sealed unit in your window. To help with the quotation process, a window installer may ask you to measure the glass for your window replacement. It’s pretty simple to just measure the sealed unit inside your window. There are just 3 steps you need to take:
  1. Including the beading (the plastic and rubber seals around the windows that can be removed), measure the width of the window frame.
  2. Do the same for the height of the window, making sure you include the beading.
  3. Then, take 10mm off each measurement, and you have the approximate size of your glass.
A reputable window installer will still make their own measurements before confirming the size of the glass in your window and going ahead and ordering the replacement. Make sure you get a range of quotes from local and national installers so you can compare the price and their quotation process.
Should I get all my windows replaced at once?

You don’t have to, especially if you’re on a budget. If you’re only replacing some, it’s a good idea to get all the windows on one side of your property replaced at the same time, so they all look the same. Be aware, obviously, huge savings could be had by having a number of windows replaced at the same time.

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.

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.

how does double glazing work?

One of the essential factors that makes a home truly a home is the convenience and comfort it provides us. As a result, we usually have a long to do list comprising things that come together to make sure our home is comfortable with ambient temperature at the very top of the scale of preference. After all, no matter how greatly designed your furniture and home decor is, it probably would amount for nothing if the temperature is either too hot or too cold. Some of the most common ways we incorporate to make the temperature a lot more conducive and warm during the winter months is by installing air conditioning system or through top notch insulation materials, but the fact still remains that a lot of heat would escape through the doors and windows. And that’s exactly the use of double glazing. So how exactly does double glazing work?

Double glazing basically works by preventing the escape of air and trapping it between two panes of glass. It’s the trapped air which serves as an insulation barrier which delivers 3 major functions. First and foremost, it stops the escape of heat through the window as the barrier created insulates the room from varying air temperatures at both sides of the glazing unit. The second major function is the double glazing works to keep down noise pollution coming from outside. While the third major function of double glazing I the fact that it helps minimize condensation which usually occurs on the single glazed windows’ inside as the cold outside air works to cool the warm air inside the house. When you install a double glazing window, the insulation barrier generated will work to stop the air temperature transmission which ultimately helps prevent the occurrence of condensation.

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.

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.

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 Penzance.

Pick the right pro for you

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

Are you a Window Installer in Penzance?

View our open Window Installer jobs near you

Join today
View Shortlist