Find a Window Installer you can trust in Lostwithiel.

Choose from 24 Window Installers, all rated by people like you.

Over 30 reviews & an average rating of 4.1/5 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

Lets Talk Windows & Doors

1 review(s)
Offers services in LOSTWITHIEL
We are a Home Improvements company specialising in replacement Windows and Doors, refurbishment and new build Conservatori...
Over 20 Reviews

Realistic Home Improvements

22 review(s)
Offers services in LOSTWITHIEL
Quality Windows, Doors & Conservatories across Cornwall, Devon & Somerset. 10+ years experience. Trust a Trader Scheme. Ul...

R & G INSTALLATIONS SW

0 review(s)
Offers services in LOSTWITHIEL
R&G Installations SW Ltd are a family run, South - West based installation company specialising in conservatories and high...

GO ECO Glazing

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

Recent Window Installer Enquiries

15 Mar

Windows | uPVC

Lostwithiel - PL22

Enquiry from: Paul M

Start Date: 1 to 3 months

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

Lostwithiel - PL22

Enquiry from: Susan W

Start Date: Immediate

homeowner 5 windows 2 sets of doors upvc supplied and fitted please call to appoint

Post a similar request >

21 Feb

Windows | uPVC

Lostwithiel - PL22

Enquiry from: Susan W

Start Date: Immediate

homeowner 5 windows 2 sets of doors upvc supplied and fitted please call to appoint

Post a similar request >

02 Jan

Windows | uPVC

Lostwithiel - PL22

Enquiry from: Jane M

Start Date: Immediate

Customer is looking to have new windows installed. They are unsure of options so would like to discuss. Confirmed interest via Customer lives in Lostwithiel area 2+ windows Supply and install Please...

Post a similar request >

13 Jun

Windows | uPVC

Lostwithiel - PL22

Enquiry from: Anne P

Start Date: Immediate

I am looking for quotes for 4+ 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 win...

Post a similar request >

12 Feb

Windows | Wooden

Lostwithiel - PL22

Enquiry from: Helen K

Start Date: Immediate

new bay windows Homeowner Supplied and fitted Please contact to appoint

Post a similar request >

16 Feb

Windows | uPVC

Lostwithiel - PL22

Enquiry from: Sam S

Start Date: Immediate

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

Post a similar request >

30 May

Windows | Glazing

Looe - PL13

Enquiry from: James T

Start Date: Immediate

I need three double glazed panes replaced due to misting up.

Post a similar request >

18 Mar

Windows | uPVC

St. Austell - PL25

Enquiry from: Deb C

Start Date: Immediate

Customer made an online enquiry for replacement windows via one of our websites. Confirmed via /phone. 2+ windows Supply and install Please call to arrange an appointment to quote.

Post a similar request >

26 Jan

Windows | uPVC

St. Austell - PL25

Enquiry from: Char W

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 d...

Post a similar request >

21 Jan

Windows | uPVC

St. Austell - PL26

Enquiry from: Graeme S

Start Date: Immediate

a quote for replacement windows

Post a similar request >

17 Nov

Windows | uPVC

St. Columb - TR9

Enquiry from: Helen W

Start Date: Immediate

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

Post a similar request >

27 Oct

Windows | uPVC

St. Austell - PL25

Enquiry from: Abby R

Start Date: 1 to 3 months

customer in the st. austell area made an enquiry a couple of projects including upvc double glazing.call anytime and arrange an appointment to discuss. below is some details about this project: are yo...

Post a similar request >

03 Aug

Windows | uPVC

Looe - PL13

Enquiry from: Angela C

Start Date: Immediate

Customer made an online enquiry for new double glazing. Homeowner confirmed interest via Considering a range of options Homeowner lives in Looe area 2+ windows Supply and install Please call to arran...

Post a similar request >

29 Jul

Windows | uPVC

St. Columb - TR9

Enquiry from: Dan A

Start Date: Immediate

Customer made an online enquiry for new double glazing. Homeowner confirmed interest via Considering a range of options Homeowner lives in St. Columb area 2+ windows Supply and install Please call to...

Post a similar request >

08 Jul

Windows | uPVC

St. Austell - PL26

Enquiry from: Brian R

Start Date: Immediate

customer made an online enquiry for quotes for double glazing replacement via one of our websites. customer lives in st. austell area and is considering a range of options for their home. 2+ windows s...

Post a similar request >

25 Apr

Windows | uPVC

St. Columb - TR9

Enquiry from: Pam R

Start Date: Immediate

Customer in St. Columb area made an enquiry for double glazing online. Confirmed via SMS at 15:36 Confirmed via phone at 15:36 2+ windows Supply and install Please call to arrange an appointment to di...

Post a similar request >

02 Apr

Windows | uPVC

St. Columb - TR9

Enquiry from: Pam R

Start Date: Immediate

Call anytime. Number of windows: 6 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

24 Feb

Windows | uPVC

Par - PL24

Enquiry from: Sheila B

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 >

06 Feb

Windows | uPVC

Looe - PL13

Enquiry from: Dan 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 ...

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 Lostwithiel is:

£2,082

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

Related Window Installer searches in Lostwithiel

Window Installer FAQs

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.

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.
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 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.

How can I find out how energy efficient my new windows will be?

All new windows come with an energy efficiency rating from A to G. A is best, while G is the lowest rating. Anything above C is considered good, but these days most companies will be able to supply you with A-rated windows to maximise your energy efficiency.

How much is it to repair the glass in a window?
Accidents happen, and sometimes windows get broken. And that will lead to you wanting to replace just the glass in your window, rather than the whole frame. Also, as windows get older they can mist up on the inside, which means that the unit has ‘blown’ - so you’ll also need to replace the glass. But how much is it to replace the glass in a window? Luckily, if the frame of your window is in good condition, there’s no need to replace it, and this will reduce the cost. For an installer to fit a new pane of glass in a single glazed window, the average cost is £100, while a replacement double glazed sealed unit will cost an average of £110. Of course, as this is an average, if your window is very large you may spend more, and if your window is very small the price may be less. That's why it’s important to get a range of quotes so you can compare costs and get the best price. If you’re good at DIY, you may feel confident enough to have a go at replacing the glass in your window yourself. In that case, the cost of sealed unit and any other materials you need will cost an average of £57. It’s a significant saving, and if you think you can do it, then give it a try. However, if you’re in any way unsure, it’s best to leave it to the professionals. A window installer will be able to replace the glass in your window in less than an hour. Even though it costs more for a professional to do it, if you get it wrong and have to start over it will cost you more in the long run.
how much does double glazed windows cost?

Are you looking to replace your old window for a new double glazed window and wondering what it’s going to be the cost? Well, the double glazed windows market is a very competitive one in the UK with varying prices across the country. Therefore, if you shop around you’re most likely to find something that’ll fit your budget both products and quality wise.

As you would have expected, the more windows you required the more money you are going to spend. However, the cost per window is likely going to be lower depending on the number of windows you purchase. Several double glazed windows come with a 10 year warranty but it’s advisable to also obtain a solid workmanship warranty which provides coverage for any potential problems for a good period of time upon installation.

To determine the cost of double glazed windows, there are so many things to put into consideration that just the primary dimensions of the window itself. Other factors that works to decrease or increase the cost of the project includes the frames’ quality as well as the material used. For example hardwood can be quite high priced when compared to uPVC.

The number of opening windows within the frame can also play a huge role in the cost of the windows as well as the type of the glass. The cost of a double glazing window usually ranges between £100 to £3,200 per window, depending on the available options.

To have a more accurate estimate of the cost of a double glazing window, you’ll need a obtain a survey from a double glazing installer who can take into account any possible complications that may arise when installing your windows while also giving an advise on the most suitable window style for your property.

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.

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 Lostwithiel.

Pick the right pro for you

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

Are you a Window Installer in Lostwithiel?

View our open Window Installer jobs near you

Join today
View Shortlist