39,457 Window and Glazing Professionals

The importance of the right windows to the appearance of your home can’t be overlooked; their arrangement giving symmetry and character to a building. And of course they also perform valuable functions such as letting light into the home and ventilation. But if your home still retains its original period sash windows, and you don’t have double glazing or secondary glazing, your windows can also make for noisy days, chilly evenings and sizeable energy bills. So, when you do want to upgrade or replace your windows, which way do you turn? Experienced window companies and glaziers will be able to advise you when to restore or repair your windows, and when to replace. If it is to be the latter, your replacement windows will be intended to last, so it’s not a decision that should be taken lightly. You want to make the right choice for your new windows, whether you opt for replacement sash, uPVC windows or a double glazed windows upgrade. So be sure to choose the right window companies and window manufacturers and you’ll sleep better at night, not least because you will be protecting your investment for years to come. More
The Industry's Most Extensive Selection of Window & Door Designs
An unparalleled value in the market, Marvin offers craftsman-quality construction, energy-efficient technology...
  • +1 888-537-7828
San Francisco's Expert Window Designs and Solutions
Alexander Company is a family owned door and window replacement business that has been proudly serving the San...
  • +1 650-373-3900
Your Leading Window & Door Manufacturer in San Francisco
Founded in 1967, Bonelli manufactures the finest custom aluminum window and door products and has gained a...
  • +1 650-873-3222
San Francisco Custom Windows
Since 1980, Wooden Window has been restoring and constructing fine wooden doors and windows for residences and...
  • +1 877-704-3667
San Francisco's First Choice for Quality Windows & Door Products
For decades, we've been helping Bay Area professionals and homeowners get the products you need and the name...
  • +1 650-401-3500
IQ Glass are the UK’s leaders in high specification technical glass solutions and structural glazing. With over... Read More
  • 01494 722880
  • Amersham HP6 6JQ, Hertfordshire
California's Premier Window and Door Specialist
Fleetwood is a manufacturer of luxury window and door products for the contemporary home market.
  • +1 800-736-7363
Sterlingbuild is the UK's largest independent online retailer of roof windows, skylights and our incredibly... Read More
  • 01304 219922
  • Folkestone CT19 5SU, Kent
San Francisco's Affordable and Efficient Window Replacement Solutions
Save Energy Company provides, installs and replaces energy efficient windows and doors for residential clients...
  • +1 707-763-3172
We at Herts Bifold Doors are accredited suppliers and installers of quality Aluminium bifold doors from Origin,... Read More
  • 01727 845600
  • St Albans AL3 6XZ, Hertfordshire
San Francisco's Highly Elite Source for all Window Replacement Needs
We are the window replacement division of Andersen Windows, drawing on the Andersen tradition of over 110 years...
  • +1 510-803-3110
First established in 1954, Mumford & Wood are manufacturers of Britain's finest timber windows and doors. Read More
  • 01621 818155
  • Tiptree CO5 0LX, Essex
San Francisco Bay Area's Award-Winning Custom Glass Artisans
Since 1979, the glass artisans of The Hyland Studio have been creating custom hand-made stained glass, leaded...
  • +1 408-748-1806
Your Timber Windows supply high-end bespoke timber windows and doors. Our team are very professional and skilled... Read More
  • 020 8252 3280
  • London EC1V 2NX, Greater London
Beautiful, bespoke wood windows and doors you can rely on, from a group of over 20 of the top timber window and... Read More
  • 020 7993 3924
  • London WC1E 7BT, Greater London
At Design Bifolds, we manufacture, supply and install a full range of Schuco high quality aluminium glazing... Read More
  • 07545 385366
  • Thirsk YO7 3BN
UK specialist in high performance architectural glazing and doors for commercial and residential projects. Read More
  • 01689 841602
  • Croydon CR0 9UG, Surrey
Bespoke window, door, and curtain wall solutions. Online quotes. Superior craftsmanship Read More
  • 020 3575 1351
  • London NW2 7JP, Surrey
Bespoke Frameless Glass offers an extensive product and service range for domestic, commercial and business... Read More
  • 0117 961 2709
  • Bristol BS6 5QA, Bristol
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What can specialist window companies, glaziers or window fitters do for me?


Specialist window companies and fitters can diagnose problems and prescribe a choice of remedies, while keeping in mind factors such as the style of your property, ease of operation, budget, noise reduction, thermal efficiency (the lower the U-value, the better), durability and maintenance. It is a balancing act that only a glaziers can deftly strike. Most window companies will be able to take care of both supplying and fitting your new or replacement windows, but if you have already purchased your windows from a window manufacturers then you can find a fitter to just take care of the installation.

What type of window company should I hire?


Like most professions, window companies and fitters often have specialisms. The glaziers you choose should reflect the types of new and replacement windows you are seeking, for example:

  • uPVC or PVCu window manufacturers will be able to assist in upgrading your windows with the latest technology. uPVC offers a cheap, energy efficient and low maintenance option.
  • A period window specialist will have particular expertise in how to deal with period windows. For example, you may be living in a Georgian property with original sash windows that have seen better days. They need draught proofing, the window frames are showing signs of rot, the sash mechanisms aren’t working smoothly and the budget is tight. A sash window refurbishment specialist, together with his team of glaziers and joiners, can reinvigorate your period windows, help install secondary glazing, or provide authentic replacement windows.
  • If you are looking to add windows to your roof as part of a loft conversion then you should look for window companies with knowledge of roof windows or Velux windows. They will help you select the correct number of roof windows to maximise the light in your attic space whilst maintaining affordability.


Where can I find the best choice of window manufacturers and window installers?


Right here on Houzz. Look for Windows & Double Glazing professionals in the Find a Pro category and then save images of window styles you love in an Ideabook. Take time to look through each window company’s profile and get a sense of where their strengths and specialisms lie. Make sure your window manufacturers’ work comes with accreditation: whether from FENSA (Fenestration Self-Assessment Scheme), FMB (Federation of Master Builders) or TrustMark.

Important questions to ask glaziers, window companies and manufacturers:


  • Are you registered with FENSA and a member of a trade organisation such as the FMB?
  • How long have you been manufacturing and/or installing windows?
  • If you just install, which window manufacturers do you tend to work with?
  • Do you provide replacement windows for period properties?
  • What styles do you specialise in?
  • Where can I read references from previous clients?
  • What level of service will you provide?
  • What choice of materials do I have for my budget and which type of window would be your recommendation?
  • Is that type of window CE marked?
  • What are the WER (window energy rating) and U-value of this type of window?
  • Do you have a showroom nearby where I can take a closer look?
  • What is the most difficult part of this project and how will you tackle that?
  • Who will actually be carrying out the work and are they fully qualified?
  • Will you be using sub-contractors?
  • Will all workers be covered by public liability insurance and employer's’ liability insurance?
  • Is your written quote fixed and inclusive of all labour, materials and VAT?
  • Please can we agree a start and completion date and discuss what happens if the completion is delayed?
  • How much disruption and mess will there be?
  • Is a deposit required and, if so, is it protected by an Insurance Backed Guarantee?
  • Is the work covered by guarantee or warranty?
  • Will you repair faults without charge if they occur and be on hand to provide aftercare?
  • Who will be my main point of contact after the job is completed?

Find window companies and glaziers on Houzz. Narrow your search in the Professionals section of the website to window companies. You can also look through photos by style to find new and replacement windows you like, then contact the glaziers, window manufacturers or companies who installed them.