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About Windowlines

The Windowlines story

Windowlines is a managed by the team that brought you Sterlingbuild and Roofinglines.

Since our beginnings in 2006, the Sterlingbuild website has grown rapidly to become the leading online retailer of VELUX windows, amongst other flat and pitched roof windows. The Roofinglines website supplies a wide range of roofing materials and to roofers and DIYers across the UK.

Now we're using our extensive knowledge of supplying low-cost, high-quality PVCu products to bring you a range of windows and doors for your home.

Our offices and warehouse are based in a busy retail park in Folkestone, Kent, but we sell products all over the UK, Europe and even as far as Australia. Wherever you are, we're happy to help you.

The Windowlines team

The team has more than tripled in the past year, and continues to grow to support our customers.

Windowlines customer services team

Each member is an expert in their field. We're proud to say our customer service team has first class knowledge of the products we sell, so if you have any questions, feel free to contact them and they'll be happy to advise you.

The Windowlines products

On Windowlines you can browse our wide ranges of high quality PVCu windows and doors. 

We've sourced the best UK suppliers of made to measure casement and sash windows, front doors, patio doors and French doors. We also sell a range of PVCu roof windows to complement your existing - or new - windows and doors. They're perfect for your new loft conversion or home extension.

Do you live in the South East area? Our offices are based in Folkestone, Kent. If you want to try before you buy, pop into our shop and see the high quality of our windows and doors for yourself.

Try before you buy! Visit our Kent shop.

If you can't find exactly what you need on our site, contact us and we'll do our best to help. We enjoy close relationships with leading home improvement brands, and will be happy to help you find the product you want for your home.

Windowlines customers

We wouldn't have the growth and success we've attained if it weren't for our customers.

Every decision we makes revolves around the visitors to our website and providing an amazing experience for you. By offering you choice of quality products at the lowest prices, we hope you'll enjoy shopping with us. We strive to provide the best products and customer service.

If you have any comments about either, we'd love to hear from you.