Double and triple glazed windows in Cornwall

Creating a versatile collection of uPVC windows and sealed units completely in-house has earned us the reputation as one of Cornwall’s most esteemed window manufacturers. A-rated for energy efficiency and thoroughly tested to adhere to the latest safety regulations, we also cater to households that prefer the elegant architectural look of
‘less frame, more glass’ with our industry-leading slimline aluminium window installations.

Add even more heart to your home with high-performance window and glazing replacements from RJM Windows.

uPVC windows and doors

Casement Windows

Typically opening from the side, casement windows are one of Cornwall's most popular window styles. Ultra-efficient, superbly secure, and easy to operate, choose between reliable uPVC casement windows and slender aluminium casement windows. Make them your own with an array of fantastic finishing touches, such dual colour frames and matching handles and hardware.

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Timberlook flush sash window

Flush Sash Windows

Taking its name from the way it fits 'flush' into the window frame, uPVC flush sash windows provide all the benefits of smooth timber frames without any of the drawbacks. We also install an innovative flush look aluminium window system, enhancing a wide range of property styles and preferences with ease.

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Black sliding sash window

Sliding Sash Windows

Vertically sliding open and shut, sliding sash windows are a common sight within Cornwall's oldest homes. A timeless and beloved window style, a range of distinctive looks can be achieved - from the classic '6 panes over 6' Georgian design to Victorian-inspired sliding sash bay window arrangements and everything else in between.

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Window and door showroom in St Blazey, Cornwall

Visit our showroom in
the heart of St Blazey

Due to the COVID-19 pandemic, our office and showroom remain closed to the public. However, we are available to discuss your unique requirements by telephone or email. We can also provide contact-free, no-obligation quotes, carry out surveys and complete installations following strict operating procedures that will be explained in more detail once your order has been placed.

We look forward to welcoming you back very soon.

Book an appointment