Roof Windows

in Trowbridge, Melksham & Chippenham

Roof Window Installers

At Alan Joy, we’ve provided a wide range of window installation services over the years. We specialise in fitting roof windows and rooflight windows, from centre pivot roof windows and top hung roof windows to electric roof windows and solar powered roof windows, alongside our double glazing, uPVC and casement window ranges.

Whether you’re planning a loft conversion, adding daylight to a landing or bathroom, or replacing tired conservation roof windows on a period property, we install roof glazing systems to suit your home and your roof pitch.

Since 1995, we’ve built a strong reputation by delivering reliable service and maintaining an unwavering dedication to the needs of our customers. We work across Trowbridge, Melksham and Chippenham including nearby areas like Bath, Bradford-on-Avon, Calne, Corsham, Devizes, Marlborough, Royal Wootton Bassett, Warminster and Westbury.

Thinking about bringing more natural light into your loft or upper floor? Get in touch with the team at Alan Joy today.

Alan Joy Windows, Doors Conservatories and Roofing, Melksham, Trowbridge

Speak to our local team.

Get in touch with us today!

“We are delighted with our replacement conservatory roof completed to a high standard. All involved from start to finish were professional and friendly. They went out of their way to complete in time for a family gathering. Would highly recommend. Thank you.”

August 2025,
Checkatrade

Energy Efficient Roof Windows

In and Around Trowbridge, Melksham & Bath

From our founding in 1995, we have built a strong reputation by delivering reliable service and maintaining an unwavering dedication to the needs of our customers.

Our double and triple glazed roof windows are built around a low U-value, Low-E glass and argon-filled glazing units, keeping the warmth exactly where it belongs. Rated by their Window Energy Rating (WER), they’re one of the smartest ways to cut down on rising energy bills while flooding a loft conversion, corridor or upper-floor room with daylight.

We know that a C-rated window ticks the legal box under Building Regulations Part L, but it’s not what we’d choose to fit in our own homes. That’s why we only supply A-rated glazing units with a warm edge spacer bar, because the difference in warmth and energy savings is something you’ll feel and experience, not just read about on a specification sheet.

Every roof window we fit is matched to your roof pitch compatibility, finished with a proper flashing kit and insulating collar, and connected correctly to the existing vapour barrier for genuine air permeability and water tightness.

Whether you need centre pivot roof windows for a traditional pitched roof, top hung roof windows for easier reach, or flat roof windows and rooflight windows for a modern loft conversion, we’ll recommend the opening sash and roof window frame that best suits the space.

We cover our local SN12 postcode area, the city of Bath (BA1 & BA2) as well as nearby towns like Bradford-on-Avon (BA15), Trowbridge (BA14), Westbury (BA13), Warminster (BA12), Chippenham (SN14), Devizes (SN10), Marlborough (SN8), Royal Wootton Bassett (SN4), Calne (SN11), and the surrounding countryside.

Ventilation, Light & Roof Window Installation

in Trowbridge, Melksham & Chippenham

If your loft feels stuffy or dark, a manual roof window with a built-in ventilation flap is often all it takes to bring in fresh air without opening the full sash. For rooms that are harder to reach, our electric roof windows and solar powered roof windows open and close at the touch of a button, and many come with a rain sensor that closes the window automatically the moment the weather turns.

Letting in the light while keeping out the cold is exactly what our roof windows are designed to do. Available with integrated blinds for glare and privacy control, and made to measure to fit your existing roof window frame, they perform brilliantly. Thanks to their exceptional durability, our roof windows will work just as well years down the line as they do on the day they’re fitted. Every installation is carried out with the correct flashing system for your roof covering, so you can be confident the finished job is weathertight.

Fitting roof windows across Wiltshire has become second nature. Our customers in Trowbridge, Melksham, Warminster, Westbury, Calne, Chippenham, Bath, and Corsham will tell you we take real pride in getting it right.

Get in Touch

Call today for more information about roof windows on 01225 703 000 in Bath, Trowbridge and the surrounding area, or contact Alan Joy Windows. We give free no-obligation quotations, and supply and fit roof windows at an affordable price.

If you’re contemplating installing roof windows, get in touch today with the team here at Alan Joy windows. We provide leading window and door services across Wiltshire and surrounding areas including Bath, Bradford-on-Avon, Calne, Chippenham, Corsham, Devizes, Marlborough, Royal Wootton Bassett, Trowbridge, Warminster and Westbury. Call us on 01225 703 000 or contact us here to speak to our friendly team.