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Here are the Top Double Glazed Windows Companies in London. Browse the companies and check out the reviews from their previous customers:

We have separated the companies into the different regions of London for easy viewing:

 

West London Double Glazed Windows Companies:

 

Glaze Windows 27 Askew Rd, London, W12 9AD0800 246 5486 info@glazewindows.comhttps://www.glazewindows.com/
West Side Windows 85 Great Portland Street, London, England, W1W 7LT07400 700749sales@westsidewindows.co.ukhttps://www.westsidewindows.co.uk/
SDG Windows 319, Sydenham Rd
London
SE26 5EW
020 8616 1516info@sdglazing.co.ukhttps://www.sdglazing.co.uk/
Cube Commercial Unit 6 Apex Business Park,
Walsall Road, Norton Canes,
Cannock, Staffordshire WS11 9PU
03331 239696info@cubecommercial.co.ukhttp://cubecommercial.co.uk
Notting Hill Glass7 Woodmans Mews, London W12 0HU0207 118 8899 info@nottinghillglass.co.ukhttps://www.nottinghillglass.co.uk/
Peerless Windows 129 Northfields Avenue,
Heritage Quarter,
Ealing,
W13 9QR
020 8567 6000sales@peerlesswindows.co.ukhttps://www.peerlesswindows.co.uk/

 

South West London Double Glazed Windows Companies:

 

Stormplan Replacement Windows270 Mitcham Rd, London, SW17 9NT Directions0800 854 403mail@stormplan.co.ukhttps://stormplan.co.uk/
Xpress Glaziers – West BromptonWest Brompton, South West London, Bovingdon Road, SW6 2AP0800 051 8751 www.glazierswestbrompton.co.uk/
Prentice Glass LtdUnit B, 10 Waterside Way, London, SW17 0HB020 8944 9001 sales@prenticeglass.co.ukhttp://www.prenticeglass.co.uk/
Traditional Sash WindowsArch 12/13 Culvert Place, London, SW11 5BA020 7274 4525 traditionalsashwindows@hotmail.comwww.traditionalsashwindows.co.uk/
Double Glazing London61A St Ann’s Cres, Wandsworth, London SW18 2LP0203 733 2312 sarah@awewindowslondon.co.ukwww.awewindowslondon.co.uk

 

South East London Double Glazed Windows Companies:

 

Bespoke Windows344 Lordship Ln, Dulwich, London SE22 8LZ020 8693 1199info@bespokewindows.co.ukhttp://bespokewindows.co.uk/
Crestshield Windows 7 Croydon Rd, London SE20 7TJ020 8776 5554info@crestshieldwindows.co.ukwww.crestshieldwindows.co.uk/
Premier Windows 4 Grecian Cres, London SE19 3HH020 8683 4446info@premierwindows.ltd.ukwww.premierwindows.ltd.uk/
A&E GlaziersShop 8, 2 Bellot St, Greenwich Peninsula, London SE10 0AL0800 058 8103sales@aeglazing.co.ukhttp://www.aeglazing.co.uk/
The Window CompanyUnit 18, Gemini Project, London SE14 5RL020 7237 6565 https://thewinco.co.uk/
SDG Windows Ltd319, Sydenham Rd, London, SE26 5EW020 8616 1516info@sdglazing.co.ukhttps://www.sdglazing.co.uk/
South East Glazing Unit 34, 151 Trafalgar Road, Greenwich, London, SE10 9TX020 7157 9840info@seglassandglazing.co.ukhttps://www.seglassandglazing.co.uk/
London and Surrey Windows15 Church Road, London SE19 2TF020 8419 8134info@londonandsurreywindows.co.ukwww.londonandsurreywindows.co.uk/
Pearson Glazing2 Pennethorne Road, Peckham, London, United Kingdom, SE15 5TQ0207 732 1511info@pearsonglass.comhttps://pearsonglass.com/
Rise Windows15 Sherard Road, London, SE9 6EX2036238708info@risewindows.co.ukhttps://www.risewindows.co.uk/
Brockley Glass Ltd205, Shardeloes Road, London, SE14 6RZ 0208 691 0976enquiries@brockleyglass.co.ukhttps://brockleyglass.co.uk/
Osborn Glass & Windows 33-34 High St, South Norwood, London SE25 6HA020 8653 2200info@osbornglass.comhttps://www.southlondonglass.co.uk/
A to B Glass & Glazing99 Anerley Road, Anerley, London, SE20 8AP020 8778 8040info@atobglass.co.ukhttps://www.atobglass.co.uk/

 

North West London Double Glazed Windows Companies:

 

Unique Services Ltd14 Uphill Grove, London, NW7 4NJ020 8906 8520 info@uniqueservices.co.ukhttps://uniqueservices.co.uk/
Henry Windows Ltd19 Colindale Avenue, London, NW9 5DS020 3325 1065info@henrywindows.co.ukhttps://www.henrywindows.co.uk/
Hampstead windows and joinery1 Western Ave, London NW11 9HG2074594048info@hampsteadwindowsandjoinery.co.ukwww.hampsteadwindowsandjoinery.co.uk/
Cricklewood GlassUnit 6D Atlas Business Centre, Oxgate Ln, London NW2 7HJ020 8038 0904service@cricklewoodglass.co.ukhttps://www.cricklewoodglass.co.uk/

 

North London Double Glazed Windows Companies:

 

A D A Windows LtdUnit G, 1, Anthony Way, London, N18 3QT020 3985 0695info@adawindows.comhttps://adawindows.com/
Hond & Langer Ltd859 Green Lanes, London, N21 2QS020 8245 4000 info@hondandlanger.co.ukhttps://www.hondandlanger.co.uk/
LORDSHIP WINDOWS33-37 Lordship Lane,
London
N17 6RU
020 8885 3702enquiries@lordshipwindows.comhttps://www.lordshipwindows.com/
Stroud Green Windows 178 Stroud Green Rd, Stroud Green, London N4 3RS020 7281 1800info@stroudgreenwindows.co.ukhttp://stroudgreenwindows.co.uk/
Oakwood Windows Ltd4 Hampden Square, London N14 5JR020 8361 0128info@oakwoodwindows.co.uk https://oakwoodwindows.co.uk/

 

East London Double Glazed Windows:

 

Manor Glazing Ltd863 Romford Rd, Manor Park, London E12 5JY020 8514 0066 info@manorglazing.co.ukhttps://www.manorglazing.co.uk/
Mansat Windows Ltd51 Queens Rd, London, E17 8QR020 8520 1233mansatltd@yahoo.co.ukhttps://www.mansatwindows.co.uk/
M R Windows Ltd540 Leabridge Road
Leyton
London
E10 7DT 
02088046207 http://www.m-r-windows.net/
Advanced Woodford Glazing Unit 4, 109, Maybank Rd, London, E18 1EJ020 3553 8445 https://www.woodford-glazing.co.uk/
Sparkle Double Glazing1-3 Shrewsbury Road
(Off Romford Road)
London
E7 8AJ
020 8472 5694admin@sparkledoubleglazing.co.ukhttps://sparkledoubleglazing.co.uk/
M B Glass & Glazing11 Wellington Ave Chingford London E4 6RE0208 257 7458sales@mbglass.glasshttps://www.mbglass.glass/
Betterdeal Windows East LondonEnsign House, Admirals Way, Isle of Dogs, London E14 9XQ020 7863 2477sales@betterdealwindows.co.ukhttps://www.betterdealwindows.co.uk/
Prestige Windows & Doors Ltd156-158 Katherine Rd, East Ham, London E6 1ER020 8503 4731admin@prestigewindows.orghttp://www.prestigewindows.org/
DDG Windows Ltd844 Romford Rd, Manor Park, London E12 5JP020 8514 0819info@ddggroup.co.ukhttps://www.ddggroup.co.uk/
Arzoo Double Glazing 245-247 Katherine Rd, Forest Gate, London E7 8PP020 8586 2308arzoodg@hotmail.co.ukhttp://arzoodoubleglazinglondon.co.uk/
Southeast Windows Ltd71 Howard Rd, Plaistow, London E13 8AZ020 8472 4088sales@southeastwindows.co.ukhttp://www.southeastwindows.co.uk/
Bargain windows Ltd205A Plashet Rd, Upton Park, London E13 0QZ07786 777867contact@bargain-windows.co.ukhttp://www.bargain-windows.co.uk/
Best Glazing Ltd546-548 Romford Rd, Manor Park, London E12 5AF020 8514 6361sales@bestglazing.co.ukwww.bestglazing.co.uk
Wanstead Windows8 Etloe Rd, Leyton, London E10 7BT020 8558 5899sales@wansteadwindows.co.ukhttps://www.wansteadwindows.co.uk/
South East Secondary Glazing128 Hermon Hill, South Woodford, London E18 1QH020 3538 6730sales@sesecondaryglazing.co.ukhttps://sesecondaryglazing.co.uk/
BBL WindowsUnit 8, Roxwell Trading Park, Argall Ave, Walthamstow, London E10 7QY020 8800 1838info@bblwindows.co.ukhttps://www.bblwindows.co.uk/
Sunrise Double Glazing749 Romford Rd, Manor Park, London E12 5AW020 8478 7390sunrisedoubleglazing@hotmail.co.ukhttp://www.sunrisedoubleglazing.co.uk/
Grove Windows Ltd16 Raven Rd, Woodford, London E18 1HB020 8505 8113info@grovewindows.co.ukhttp://www.grovewindows.co.uk/
City Sound Secondary Glazing367 Chingford Rd, Walthamstow, London E17 5AE020 8523 3210sales@citysoundglazing.co.ukhttps://www.citysoundglazing.co.uk/
Crystal Windows2C Fulbourne Rd, Walthamstow, London E17 4EE01708 772500 enquiries@crystalwindows.co.ukhttps://crystalwindows.co.uk/
A1 Double Glazing883 – 887 Lea Bridge Rd, Walthamstow, London E17 9DS020 8521 6451 info@doubleglazinglondon.comhttp://a1doubleglazinglondon.com/
East London Repairs96 Seymour Rd, London E6 1PX07939 516326eastlondonrepairs@yahoo.comhttp://eastlondonrepairs.co.uk/
D G Double Glazing132 Palmerston Rd, Walthamstow, London E17 6PY020 8520 5039 sales@dgsolutions.co.ukhttps://www.dgsolutions.co.uk/

 

 

Some Common Double Glazed Windows Questions and Answers:

 

Can I get free double glazing?

If you are over the age of 60, living on benefits, or otherwise in dire need of assistance, you may be able to get free double glazing. You will need to check with the benefits office.

Is it worth replacing old double glazing?

Yes, if they are misting up or condensation is appearing between the panes. Remember, some double glazed windows are better than others, and triple glazed windows can be better still. Check warranties and guarantees. Replacing old double glazed windows with new higher performance glazing will cut heat loss through your windows, making the room more comfortable and easier to heat. It can also cut your heating bills slightly.

What are the benefits of double glazing?

Less condensation – Double glazed windows reduce the amount of moisture on the inside of your windowpanes, as the airtight seal prevents the condensation from building up. Single glazed windows often allow condensation to build up which causes windowpanes to produce mold. Also there will be less external noise.

What does double glazing mean?

The actual definition is: two layers of glass with a small insulating gap in between set in a window to reduce heat flow in either direction.

Will double glazing make my house warmer?

Yes, Single glazing is not considered a suitable option for the majority of modern homes. It won’t effectively trap heat, whereas double glazing will keep your home comfortable for longer

How many years does double glazing last?

The general consensus from manufacturers on the lifespan of double glazing is estimated to be anything between 20 and 35 years depending on the manufacturer and the fitter. Some people even suggest up to 40 years if looked after.

Are the window sills replaced with new windows?

No, even though windowsills receive the majority of moisture from open windows, they are never replaced during the window replacement process. That is a job for a good joiner.

Does double glazing keep a house cool?

Yes, Double glazing is very effective in all weathers because it stops heat transferring from one side to the other. That means in winter, it stops heat escaping from the inside of the property and in hot weather it limits the amount of heat energy from the sun transferring to inside the building.

Does double glazing really make a difference?

Yes, double glazing can be as effective as improving your home’s insulation and reducing external noise by up to 70%.

How much energy do you save with double glazing?

As mentioned previously, double glazing can improve insulation by up to 70% which means its costs less to heat your home. In 2022 we have seen huge energy cost increases, so it is vital for most people to reduce heating bills.

How do you know if your double glazing needs replacing?

The clear signs that you need to replace your windows are:

  1. There Are Draughts Around Your Windows
  2. There Are Chips or Cracks in the Windowpane
  3. You have Condensation on the glass
  4. Your Windows Have Water Leaking In
  5. Your Energy Bills Have Been Increasing
  6. Difficulty Using Windows

Which is better aluminum or uPVC double glazing windows?

As Aluminium is stronger than uPVC, this means aluminium windows have thinner frames, which some people prefer. In most cases it is an aesthetic decision rather than a performance decision.

Does double glazing reduce noise?

Yes, it definitely does. Double glazing by its nature is a noise reducing system of insulation or soundproofing. As it comprises of two panes of glass, with an air gap in the middle, and a specialised frame.

How long does it take to install double glazing windows?

On average, each window takes anything from 1 hour to 3 hours for a fitter to install. The actual time it takes to install the window will be different depending on the size and type of window.

It is a very good idea to shop around with local London and national Double Glazing Companies. By using Glazing Network we can connect you with over 4000 double glazing companies throughout the UK. Please use our quote form to receive up to 3 quotes from local double glazed windows companies in London or scroll through the companies and contact them directly.

If you have any issues with tradesmen in London then please contact London Trading Standards at: https://www.londontradingstandards.org.uk/contact/

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