Find a Window Installer you can trust in Llanelli.

Choose from 37 Window Installers, all rated by people like you.

Over 34 reviews & an average rating of 4.8/5 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

Alexander Constructors

0 review(s)
Offers services in LLANELLI
South Wales, Penarth based design and build contractor. Projects completed include new houses, extensions, kitchens, bathr...
Over 20 Reviews

Securahome PVCu

26 review(s)
Offers services in LLANELLI
Est. in 1994, Securahome, based in Gorseinon, Swansea, offers a range of UPVC, timber and aluminium orangeries, windows, d...
Complete home improvements with honest pricing, brought to you with both innovation and design.
Over 35 years’ experience, we offer the complete package from design to installation & 10 years beyond. We offer start to ...

Windowmaker

0 review(s)
Offers services in LLANELLI
We are one of the few window companies in Swansea that manufacture their own Upvc windows and doors, using eurocell profil...

Recent Window Installer Enquiries

14 Feb

Windows | uPVC

Llanelli - SA14

Enquiry from: Juliet P

Start Date: Immediate

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

Post a similar request >

28 Jan

Windows | uPVC

Llanelli - SA15

Enquiry from: Scott H

Start Date: Immediate

Call anytime. Number of windows: 5 Number of doors: 2 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

13 Nov

Windows | uPVC

Llanelli - SA15

Enquiry from: Malcolm C

Start Date: Immediate

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

Post a similar request >

05 Nov

Windows | uPVC

Llanelli - SA14

Enquiry from: Laura T

Start Date: Immediate

Call any time. 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 >

20 Oct

Windows | Glazing

Llanelli - SA15

Enquiry from: Wendy A

Start Date: Immediate

customer is looking to get quotes for replacement double glazing. multiple windows supply and install please call to quote. are you the property owner: tenant (with permission) what level of service d...

Post a similar request >

08 Oct

Windows | uPVC

Llanelli - SA15

Enquiry from: Jacob J

Start Date: Immediate

Call any time. Number of windows: 5 Number of doors: 1 Quote requested on windows and doors, in PVCu, to be supplied and fitted.

Post a similar request >

20 Jun

Windows | Glazing

Llanelli - SA14

Enquiry from: Ian M

Start Date: Immediate

We have several doubled windows that need re-sealing

Post a similar request >

15 Jun

Windows | uPVC

Llanelli - SA14

Enquiry from: Patricia D

Start Date: Immediate

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

Post a similar request >

13 May

Windows | uPVC

Llanelli - SA15

Enquiry from: Meinir G

Start Date: Immediate

Customer is looking to replace their windows. They are still considering options so please call to discuss what would be best for their home. Homeowner lives in Llanelli area 2+ windows Supply and ins...

Post a similar request >

06 May

Windows | uPVC

Llanelli - SA15

Enquiry from: Darryl E

Start Date: Immediate

7 windows and 2 doors fitted

Post a similar request >

05 May

Windows | uPVC

Llanelli - SA15

Enquiry from: Julie S

Start Date: Immediate

Customer is looking to get quotes for replacement double glazing. multiple windows Supply and install Please call to quote.

Post a similar request >

30 Apr

Windows | uPVC

Llanelli - SA14

Enquiry from: Kayley R

Start Date: Immediate

Customer is looking to have windows installed. They are unsure what options to go for so would like to discuss directly multiple windows to be Supplied and installed Please call to quote.

Post a similar request >

22 Apr

Windows | uPVC

Llanelli - SA14

Enquiry from: Jenna F

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 Llanelli area 2+ windows Supply and install Please cal...

Post a similar request >

18 Apr

Windows | uPVC

Llanelli - SA14

Enquiry from: Ian B

Start Date: Immediate

Customer made an online enquiry for quotes for double glazing replacement via one of our websites. Customer lives in Llanelli area and is considering a range of options for their home. Confirmed inter...

Post a similar request >

07 Apr

Windows | uPVC

Llanelli - SA15

Enquiry from: Scott H

Start Date: Immediate

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

Post a similar request >

29 Jan

Windows | uPVC

Llanelli - SA14

Enquiry from: K

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 >

15 Jan

Windows | uPVC

Llanelli - SA15

Enquiry from: Tracy S

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 >

07 Jan

Windows | uPVC

Llanelli - SA14

Enquiry from: Barbara 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 >

07 Jan

Windows | uPVC

Llanelli - SA14

Enquiry from: Alison W

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 >

06 Jan

Windows | uPVC

Llanelli - SA15

Enquiry from: Georgi G

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 >

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 Llanelli is:

£2,082

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

Related Window Installer searches in Llanelli

Window Installer FAQs

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 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 long does it take to install one small double glazed window?

To install one small double glazed window, it will take anywhere between two hours and half a day. It will depend on whether one installer is fitting your window or two. And if you’re doing it yourself and don’t have any professional experience, it will take even longer.

When the window fitters arrive, they will make sure they’ve got safe access to the window and move any heavy furniture if they need to. Any good installer will lay down a dust sheet, but it’s a good idea to check that they’ve got one laid down before they start.

The first step any window installer will take is to double check the measurements of the new frame against your existing one. Hopefully it should match up, so then they’ll take the old window out. Then, they’ll insert the new frame into the aperture and bolt it into the concrete. They'll check it with a spirit level to ensure it’s even before moving onto the glass sealed unit.

The installer will place the glass into the aperture, then fit the beads to secure the glass in the frame. They’ll then use silicone and trim on the inside and outside to ensure the window looks perfect. You won’t be able to see where they’ve used sealants or trims because they’ll colour match them so it’s not noticeable. Then, they’ll tidy up all of their tools and the working area and let you know what needs to be done in terms of proving that the window meets building regulations. Most good installers are registered with a self-certification scheme, so will be able to issue a certification once the work is complete.

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 does Aluminium double glazing work?

Double glazing is made up of two layers of glass, with a layer of argon gas in between. This type of glass can be used in Aluminium windows. The gas is a poor insulator, helping heat to stay in your home and making your windows more efficient. As well as trapping the argon gas, the second layer of glass reduces the amount of noise that enters your property, and helps to make your windows stronger and more secure.

how to tile a porch roof?

Tiling a porch roof is a very important but laborious and difficult task. A project of this magnitude will require a large investment in planning and preparation way before the actual installation process takes place. It can be a brand new porch roofing tile or a replacement of the existing one, either way it’s crucial to get the right technique. If you lack proper training or experience in this field, we’d recommend you hire the services of a reliable professional probably within your local area to guarantee the best results and to save yourself some time and money. This guide will give you a good insight into the porch roof tiling process. Let’s have a look!

• With the crown looking upwards, put the first tile on the batten and centre the tile from side to side.

• Hammer a 10d nail at the base of the tile and into the batten (make sure not to overdrive the nail).

• To provide a much needed support, apply a little mortar under the first tile.

• Identify the inner end of the first tile and place another tile on top. Take a measurement from the outer end and adjust the end of the second tile to fit.

• Just like you’ve done with the first tile, nail the second tile into the batten.

• Position two tiles at the both ends of the ridge and proceed with the installation just as you’ve done with the previous tiles.

• Take a measurement of the distance across the ridge from the first tile’s outer end. Once done, you can then calculate the number of tiles required by subtracting 16 inches from your measurement and divide the answer by 8.

• Beginning at the second tile on one end of the ridge, install the half the number of ridge tiles towards the centre of the ridge. Now install the remaining tiles working from the opposite end to the ridge’s centre. At the centre of ridge should be a key tile with mortar.

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 is a window sash?

Windows, being a very crucial feature in every home, are one of the things you simply can’t afford to ignore in your home. Having a good understanding and solid knowledge of your windows’ components like the window sash will help you stay up to date with them and able to identify any minor mishaps early on before it leads to a much bigger problem. So what exactly is a window sash?

Well without much fuss, a window sash is simply that part of your windows that’s able to open and close. And there could as well be more than one window sash that’s operable depending on your window’s type. Window sash usually possess a very basic design as well as structure. What’s more? This section of a window happens to be a frame that’s designed in such a way to make for easy placement inside the whole window casement. You’ll discover inside the sash frame, the window glass alongside any framework possessed by your window which includes grids.

Usually, the sash is fitted into the frame of the window on a runners’ set in such a way that allows for both upward and downward movements. And finally, the window sash’s frame typically comes with a locking system which provided for extra safety and security.

The window sash is a vital feature that can determine the durability and overall performance of the windows. In the event whereby your window sash is malfunctioning, it can result to numerous problems which includes both drafts as well as leaks. As a result, it’s very important to keep your window sashes in a great working condition as failure to do so will make opening and closing your windows a really difficult task.

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 Llanelli.

Pick the right pro for you

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

Are you a Window Installer in Llanelli?

View our open Window Installer jobs near you

Join today
View Shortlist