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The Prettiest Most Authentic PVC-U Styles Possible

We admit we’re a little obsessed! Loving sash windows as we do, we hope that you’ll appreciate the time that’s been devoted to ensuring our styles are as authentic as possible.

We steer clear of making casements, doors or patios. We found our niche and decided to stick to what we do best, making one product and one product only – stunning sash windows.

Authentic by Design

Masterframe founder Alan Burgess pioneered a new direction for the design after helping create the UK’s first dedicated PVC-U box sash in 1984. Shortly afterward he set about creating a market for PVC-U sash windows.

Supplying the Best

We can work on a wholesale basis, supplying other companies with sash windows and installers with bespoke solutions.

Virtual Tour

We always welcome visitors to our showroom in Essex. However, if you would like to take a virtual tour, please enjoy the experience below!

Find Us

Masterframe Windows Limited
4 Crittall Road, Witham
Essex, CM8 3DR

T: 01376510410


Opening Hours

  • Mon-Thurs8:30am - 5:00pm
  • Fri8:30am - 4:30pm
  • SaturdayBy appointment

What Makes Us Different?

We’ve been making sash windows for more than 32 years, this gives us a good handle on what makes perfection.

Continuous Innovation

Dedicated to retaining the elegant proportions of traditional windows through continuous innovation, creative flair and passion, you can be confident we set extremely high standards with excellent craftsmanship and attention to detail.

You’ll find we’re not cheap. Indeed we’d go so far as to say we’re considerably more expensive than other sash window producers. That’s because we include more, do more and taking like for like, you can expect us to be excellent value for money.

Exceeding Expectations

You set the standards with your own specification, the benchmark you expect your new windows to attain, using the components you require and that you believe are right for your project. We will help you understand what is important and set out to exceed all expectations.

As conservation officers across the UK have found, if you decide to invest in our products, your perceptions of PVC-U will probably change for good.

Discover Masterframe

Our series of sash window information, glossary of terms and video library access are all available, obligation free, to enable you to make an informed choice for your home – just fill in our enquiry form below. Hopefully, they demonstrate we’re not your average double glazing company. Whether you are building your dream home, refurbishing an existing property or you are an installer of sash windows our products can help retain the character, charm and beauty of existing sash windows or create an authentic environment for your new property.

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What People Say…

“I’m always so impressed with the service from the entire team at Masterframe. Recently, I called the office while I was with a customer. I needed some information quickly, to help me to close an order. With an average window supplier, I wouldn’t usually make this call, as typically I can wait hours or even days for the right information, but I knew masterframe would react straight away with the right information. In this instance, carol and jane between them had an email over to me within minutes, and my customer was very happy. Top-quality service from the knowledgeable staff as always. Thank you!”

Tommy Rose

Barnet Window Company

Get in Touch

Fill in the form below and one of our team will get back to you as soon as possible.