About us

If this is your first time shopping for roof windows or rooflights, you may not have heard of us. So here's an introduction to Sterlingbuild, the products we sell and the team behind the UK's largest independent online roof window retailer.

Who is Sterlingbuild?

Sterlingbuild is an online home improvement shop specialising in windows for loft conversions and home extensions. We stock a wide range of well-known brands, including VELUX, Sunsquare and RoofLITE at fantastic low prices, which we've sold to be installed in public buildings and homes all over the UK, Europe, United States and even Australia (unfortunately we weren't able to convince our boss to pay for a business trip to Sydney to see the installation).


More VELUX products in stock

We have many more VELUX products in stock than other retailers


We've grown rapidly since our start in 2008 and it's all thanks to our customers - both home owners wanting to convert their loft or add more daylight to dull rooms and businesses wanting to provide the best products at the lowest prices for their customers. In June 2014, we moved to larger premises in Folkestone to keep up with demand and hire new staff to ensure we provide the best customer service we can.

We're able to keep thousands of products in stock for faster delivery. Our huge warehouse stocks VELUX, ECO+, Lightway, FAKRO, Sunsquare and RoofLITE products - to name a few.


Sterlingbuild warehouse

Moving to much larger premises let us grow our team of experts as well as stock thousands of products

Our core values

One afternoon, the whole team got together (less the 3 company directors) to decide on our company's core values. We wanted to encompass every aspect of the company - ensuring the best for our customers and for each member of the team. These are the 5 core values we all aim to every day:

  • Keep our customers informed every step of the way
  • Always be the best we can
  • Value and recognise our team’s contribution
  • Teamwork across the business
  • Ambition for personal and company growth

We put these values into our long-term strategy as well as our day to day activities.

Commmitment to our customers

We don't want to only offer the industry's leading products for your loft conversion or home extension. We want your shopping experience to be the best we can offer.

Best value for money

We are so committed to offering the best prices, we offer a Price Match+ promise. If you find one of our products for cheaper elsewhere in the UK, we won’t just match the price, we’ll beat it.

Best customer services

Our website is a Google Certified Shop. This means it meets the stringent regulations set by Google to provide reliable delivery and excellent customer services. Plus, customers can opt in to get free purchase protection provided by Google.

We have a team of experts on hand to answer your calls or emails. Each member goes through an intensive introduction to the products we sell and attend monthly training sessions of hands on demonstrations by our suppliers.

How to install a roof window
We ensure our customer services team are trained to answer your questions

Better delivery services

If you live in the London or Kent area, and you’re renovating your home, we can deliver many products next day thanks to our team of drivers. You might see them on the M20 stuffed full of VELUX windows, flat roof skylights and rooflights.

For those of you who live outside of our delivery service, we're happy to offer you free delivery for your order.


Your local shop

If you live in the east Kent area, you're more than welcome to visit our shop where you will find our low online prices in store. Pop into our shop for great prices and high quality products.

Skylights & roofing materials in Kent
Try before you buy! See how stylish & sturdy a rooflight is before you buy it

As we're based in Kent, we're on your way to France. So if you're doing up your French getaway, pop in and we'll do our best to help you get your home improvement supplies to take with you. Matt, Jamie and Duncan will be happy to answer your questions and ensure you get the right products for you renovations.

If you have any questions about us or the products we sell, please do not hesitate to get in touch. We'd love to hear from you!

Roofinglines roofing materials

Do you need roofing materials to install your extension rooflight or loft bedroom window? We have the budget friendly answer.

Our sister site Roofinglines sells a huge range of flat and pitched roofing materials. Talk to our sales team today to order your Marley tiles or flat roof waterproofing at the same time as your VELUX window or Sunsquare rooflight.

Sterlingbuild customer services

Windowlines uPVC windows & doors

Again, why shop around for other elements to your home extension or loft conversion.

In 2016 we launched Windowlines. This easy to use website lets you design uPVC windows and doors. In just a few moments, create your made to measure windows and doors, and in only 7 days take delivery for installation into your home.

Design your windows and doors online, or call us on and ask for Matt - our in-house expert who used to be a window fitter before joining us.

Bespoke uPVC windows & doors

High quality, low prices - we're putting our home improvement and window expertise to good use to save you money on uPVC windows and doors.