You wouldn't buy double glazed replacement windows & doors without a BSI Kitemark, you shouldn't allow a company without a BSI accreditation to install them...

Thames Valley Window Company are one of only two BSI accredited companies for the installation of replacement double glazed windows in the Thames Valley area.

Double glazing and double glazed replacement windows, doors and conservatories demand product excellence, design for your house and skilled craftsmen with years of experience to fit them!

Thames Valley Window Company was founded in 1984 and has over 50,000 satisfied customers making Thames Valley Windows the largest replacement windows and double glazed windows supplier for Surrey, Hampshire & Berkshire!

Thames Valley Windows have the most robust customer charter in the business for replacement windows and supply and install the very best UPVC replacement windows and wooden replacement windows. Just look at our customer testimonials and you will know that you can rely on us.

We only supply the best double glazed windows.

10 Year Guarantee of confidence

All of our UPVC double glazing Surrey, Hampshire & Berkshire is custom built, and come with a 10 year guarantee as standard. Read More

Buy with confidence

Thames Valley Window Company has been producing some of the
finest double glazing in the world for over 40 years. Read More

Double glazing Surrey, Hampshire & Berkshire

Thames Valley Window Company are specialists in double glazing Surrey, Hampshire & Berkshire. Our replacement windows offering is industry leading with the best guarantee in the industry which operate in and around Surrey, Hampshire & Berkshire. Replacement windows are delivered to Thames Valley Windows strict standards

We only use the best available replacement double glazed windows and wooden double glazed windows.

Our fitting of double glazing Surrey, Hampshire & Berkshire and wooden replacement windows is by an installation team that works directly for Thames Valley with at least 5 years experience and are specialists in replacement windows.

Thames Valley Window Company passionately believes in design. We design each installation of replacement windows around your house. The finish and detail for double glazed replacement windows is key. The cill, the bar details, furniture all are crucial to the finished look. Thames Valley Window company, replacement windows bring everything together in one unique package.

The combination of great product, with expert fitting and cutting edge design and that essential attention to detail delivers the best possible installation of our double glazed windows.