Loader
New Stellar
Slimline Bi-folds
Integrated smart lock sensors
AS STANDARD on PVC-U windows & doors
PatioMaster
the UKs favourite inline sliding door
Stellar
Lift Slide Door
Confidence
with Colour
We’re Part L compliant
on all our products

WE ARE THE UK’S LEADING PVC-U WINDOW AND DOOR MAKERS

At Sierra Windows, we’ve been creating bespoke frames from our factory in Devon since 1976. Today, we combine good old-fashioned customer service with new and innovative solutions that have the power to transform homes and workplaces.

You can leave it with us. By choosing Sierra Windows, you’ll have access to a wide range of suppliers, many of whom will only work with larger businesses like ours. This enables us to offer everything you need under one roof. Each frame is crafted to order right here in Devon, and nothing leaves the factory floor until it meets our exacting standards.

We’ve obtained a wealth of experience during our forty years in the business and we’re happy to share that knowledge with you. Whether it’s a question about measurements, some advice on styles or a few fitting tips, talk to a Sierra Windows expert today.

Request a free information pack

Request Pack
Windows

We can design virtually any frame for any installation, with an extensive range of styles, colours and opening features…

View Products
Doors

Independently tested to ensure they meet (and often exceed) industry standards, Sierra doors are guaranteed to keep the sound out and the warmth in…

View Products
Conservatories

Increase your product offering with beautifully crafted conservatories from Sierra. Discover our complete design to delivery service…

View Products
Aluminium

Every individual Bi-fold and lantern roof is a bespoke product, tailored to your precise specification and needs.

View More
 
BS7412 KM12887
BS741-PAS24 KM505822
BS7412-PAS24 KM33527
ISO9001
Accreditations
 

Please Read

The portal will be unavailable from Saturday 9th and Sunday 10th June for maintenance. Please contact the sales office for help if needed. We apologies for any inconvenience during this time.