Alpha Windows
A local business you can actually trust
We started Alpha Windows in 2003 with one belief: that homeowners deserved a glazing company that put quality and honesty ahead of everything else.
The Alpha Windows Story
Started on a principle. Still here because of it.
We set up in Berkshire because this is our patch. We know South Buckinghamshire. We know the area's housing stock from the Victorian semis in Slough to the large detached homes in Gerrards Cross, the character properties in Beaconsfield, and the period homes that line the streets around Windsor. We've spent over two decades building a reputation here, one installation at a time.
Over 20 years on, nothing fundamental has changed. We still visit every home personally. We still give you an honest assessment rather than a sales pitch. We still won't leave until the job is done properly and you're happy with it. We started with the belief that local homeowners deserved someone they could actually trust. That hasn't changed.
Our work
Installations across South Bucks and East Berkshire
Every job photographed on site. Real homes, real results.
Our fleet · South Buckinghamshire
01 / 05What makes us different
What you actually get with Alpha Windows
Here's exactly what happens after you get in touch.
A real site visit, every time
We don't quote over the phone or give online estimates. Every property is different and deserves to be measured and assessed properly. You'll always meet the person responsible for your job before it starts.
Honest advice, even if it costs us
If a product isn't right for your home or your budget, we'll tell you. We'd rather lose a sale than leave a customer with regret. Our reputation in South Bucks has been built over 20 years — we have every reason to protect it.
FENSA registration, handled for you
Every installation is certified and registered with your local authority automatically. This is important when you come to sell your home — solicitors will ask for it, and we'll have it ready.
Fully insured, no exceptions
We're fully insured throughout every job, so you and your home are completely protected from the moment we arrive to the moment we leave.
Products we actually believe in
We're approved installers for Rehau, Origin, Rockdoor, Solidor, Korniche and other leading manufacturers because their quality matches our standards. We'll only recommend a product we'd fit in our own home.
We leave your home as we found it
Every job ends the same way: old frames and glass removed and disposed of, every surface cleaned, not a screw or shaving left behind. We don't consider a job finished until it looks like we were never there — except for the new installation.
Windows
Windows
Casement, sash, flush, heritage and aluminium — every style, measured and fitted properly for your home.
See options
Doors
Doors
Composite, bi-fold, French, patio and sliding — chosen for your home, installed to last.
See options
Rooflights
Rooflights
Lantern roofs, flat glass rooflights and bespoke glazed roofs — transforming rooms from above.
See options
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 optionsAccreditations & 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 productsThe 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.
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.