Masterframe Trade Logo

Our Trade Sash Windows

Robust, Authentic, Quality products with BBA accreditation, competitive prices a wide range of colours, foils, arches and paint finishes to meet your every requirement. Bespoke solutions, built on 32 years of design experience.

Vintage Sash Windows Logo

Designed for clients who appreciate authentic features and detailing like patented Timberweld® butt joint construction, exclusive staff bead outer frame design, deep bottom rail and integral mullion on multi-light windows. Vintage collection is a conservation officer’s dream. 

Authentic Sash Windows Logo

Our Authentic Sash Windows come with authentic features such as original putty line details, traditional patented Timberweld® butt jointed corners, deep bottom rail, run through horns, and a white wood foil finish as standard.

Heritage Sash Windows Logo

Our Heritage Sash Windows come standard with a host of authentic and exclusive features including patented Timberweld® technology and Secured by Design as standard. This low maintenance timber alternative window blends into the most contemporary of settings.

Our Promises To You

Your delivery will be free, complete and on time, wherever you need it on mainland UK.

Bespoke solutions, built on over 32 years of design experience, for you and your customers.

Robust, Authentic, Quality products with BBA accreditation and competitive prices.

A wide range of colours, foils, arches and paint finishes to meet your every requirement.

All products are CE marked and A rated as standard.

Over 30 years dedicated to just PVC-U sash windows – no other company comes close.

Product Range Comparison Table

Having trouble making up your mind?

You’ll find the summary benefits listed in our Comparison Table will help you make the right choice. There are now more choices than ever to assist you to get the very best sash windows for your customer’s project.

Timberweld Logo

What makes Bygone sash windows so authentic? This is your Timberweld® technology advantage.



Explore our resources center for your most frequently asked questions, sample requests to help you choose the right products for your business, and to check all the features that come with our product ranges. 

We Can Help Grow Your Business

As the UK’s longest established company dedicated to PVC-U sash windows, we’ll do what we can to help you win orders.

You set the standards with your own specification, the benchmark you expect your new windows to attain, using components you require and that you believe is right for your project.

We will help you understand what is important and set out to exceed all expectations.


Visit Masterframe

Take a look around our manufacturing plant based in Essex.


Contact Us

Fill in the form below and one of our trade team will contact you as soon as possible.

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