Alpha Windows
Beautifully fitted windows, doors and rooflights designed to last
Expert installations with no pushy salespeople and no hidden costs. FENSA registered, fully insured, and trusted by homeowners since 2003.
The Alpha Windows difference
New windows and doors are a long-term investment. We treat them that way.
Most glazing companies want you to decide quickly. They'll visit your home, sit at your kitchen table, and won't leave until you've signed something. We've never worked like that and we never will. When we visit, we take the time to properly understand your home, your priorities, and your budget — and if you need time to think, we'll give it to you.
- FENSA Registered
- Every installation certified to current building regulations
- Fully Insured
- Complete peace of mind throughout the entire process
- Approved Installers
- Duraflex, Rehau, Origin, Solidor, Rockdoor & more
- No-Pressure Quotes
- We visit, measure, and advise — no obligation, ever
Windows
Windows
Casement, sash, flush, heritage and aluminium — every style, measured and fitted properly for your home.
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Doors
Doors
Composite, bi-fold, French, patio and sliding — chosen for your home, installed to last.
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Rooflights
Rooflights
Lantern roofs, flat glass rooflights and bespoke glazed roofs — transforming rooms from above.
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Conservatories
Conservatories
We supply and fit the glazing elements of conservatories and orangeries — roofs, windows, doors and glazed panels — working alongside your builder across South Bucks and East Berkshire.
See optionsThe process
Getting started is simpler than you think
Here's exactly what happens after you get in touch.
Get in touch
Tell us what you are thinking
Fill in the short form below or give us a call on 01753 663663. There is no obligation and no sales process triggered by making contact — just let us know what you are considering and we will take it from there.
We visit your home
A proper look at your property
We visit at a time that suits you — usually within a few days. We measure every opening, assess what is there, and talk through your options honestly. We bring samples so decisions can be made against your actual property in natural light.
Your written quote
Clear costs, no surprises
We follow up with a written quote that covers everything involved. No hidden charges, no items that appear later. There is no pressure to decide on the day and no uninvited follow-up calls. You take as long as you need.
Installation
Done properly, left tidy
Our fitters work through each opening one at a time so your home is never left exposed. Furniture and flooring are protected throughout. Old frames are removed and disposed of. Before we leave, everything is tested and you are walked through the result.
Accreditations & Approved Partnerships
We only fit products we trust
Every installation is FENSA registered and certified to current building regulations — automatically registered with your local authority on your behalf.
FENSA Registered
All window and door installations are certified to meet current building regulations. Required documentation handled for you, essential when you come to sell your home.
Approved installer for
Not sure which product is right for your home? We'll advise honestly during your free site visit — no obligation to proceed.
Ask us about productsReviews
What your neighbours are saying
Real reviews from homeowners across South Bucks and East Berkshire. Every one verified through Google.
I had a new window fitted, Joe and Bob behaved in a professional manner at all times and the work was done to a high standard. I would have no hesitation in using Alpha Windows again. Joe and Bob came again today and fitted a new door on my garage. A very professional finish.
Stuart Jones
Gerrards Cross
Having used Alpha Windows in our school in Gerrards Cross, we found their experience and ability to work around the schedule very helpful. The managers and owner have been great with communication and very personable. Installers resolved issues quickly and the end result has helped with heat retainment and aesthetics. Great experience.
Chris Ohanians
Gerrards Cross
They replaced all the windows in our 3-bed house. Very good service and competitive prices. Good communication and very happy with the windows.
Kiran Arhestey
Windsor
Alpha Windows are brilliant. Great customer service, great windows, competitively priced and superbly fitted. Their fitter is so good and diligent that he managed to fit the replacement windows with barely any disruption to the plaster. I don't even need to repaint around the aperture. Highly recommend.
Nathan Turner
Ascot
New lantern installed, great job. Victoria in the office, Joe overseeing everything and Jack installing made the whole process a pleasure. Would recommend to anyone.
Martin Rosen
Stoke Poges
We used this company for our patio doors, their communication and service was great. We are really happy with the work completed and love our new doors.
Lauren Willcox
Iver
Free no-obligation quote
Get your free quote
Tell us what you're thinking. We'll be in touch within one working day to arrange a visit. No pressure, no automated calls — just a real conversation.
What to expect
No pressure, no obligation
We'll never chase you or push for a decision on the day.
We visit your home personally
Every property is different — we measure properly before quoting.
Clear, itemised quote — no hidden costs
A written quote with everything included. Take as long as you need.
Your details stay private
We'll never share your details or add you to a mailing list.