Supreme Windows

Volterra, Cockwells, Penzance, Cornwall, TR20 8DB Directions

Business overview

For the very best in double glazing, conservatories, doors, patio doors and porches call Supreme Windows.

Double Glazing Repair in Cornwall

Our sales team are not on commission so there are no hard sell tactics - just solid advice on what you really require for your home or conservatory. For the very best in double glazing, conservatories, doors, patio doors and porches call Supreme Windows.

We supply everything you will ever need in the glazing line including fascias, soffits and guttering throughout the Cornwall area. For advice on all aspects of windows and conservatories, get in touch with us via the details on our contacts page, or view our website.

We are member of FENSA and the Plastics Window Federation.


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Products & Services

•Design & Manufacture Conservatories

•Made to measure Windows & Doors

•Full Installation & Survey Service

•Double Glazing Services

Casement windows


conservatory repairs

door fitting

door repairs

double glazed porches

double glazed windows

double glazing repair

edwardian Style windows

external doors

folding doors

front door installation


patio doors

porch doors

replacement doors

replacement windows

sash window repairs

sash windows

security doors

sliding doors

upvc doors

upvc windows

victorian windows

window repairs


Double Doors

French Doors

Composite Doors

uPVC In a varity of colours

Tilt & Turn windows




Don't go near this company

Don't bother with this company. They promised to tackle the project and took a deposit in last year and have still not appeared to do the work, nor returned the deposit.
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Avoid at all costs!

Don't waste your time dealing with Supreme Windows, their service and customer care is non existent. I had to wait over 7 months for my guarantee to be sent to me, they have refused to replace a corroding letterbox in my new door and despite many emails, messages and phone calls, refuse to replace a door panel they broke when installing a cat flap. There are far more trustworthy, reliable and professional installers out there!
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Job well done

We placed an order for two double glazed doors. Very pleased with quality and fitting. no hassle. nice straightforward job.
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Quality and great design

Had a fabulous L-shaped sunroom/conservatory fitted several years ago with tinted roof and style matched to our others windows perfectly. Has been the most amazing addition to our property with attention to detail given. Also the composite front door is of excellent quality, east to maintain and very secure
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We had our Conservatory replaced by Supreme approximately 5 years ago & has been leaking ever since. Supreme came back several times but have been unable to solve the problem. The problem is now worse & they arranged a further appointment with us last year but despite waiting in for them they did not show & have heard nothing further.
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