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Our Brands

Aperture Group is known for its marketing-leading brands including WarmCore, Calibre and Global.

Through internal developments and acquisitions, we have gradually built up the most competitive product offer available so we can offer our customers the very best the industry has to offer across a range of markets including window, door and conservatory system

WarmCore Inline Patio Door

Meet the next generation Aluminium Inline Patio Door

Truly warm aluminium windows

WarmCore is 25% more thermally efficient thanks to a unique, full-width thermal core

Innovative aluminium doors

Aluminium Bi-folds, Residential and French doors

Precision engineered timber doors

Secure, stylish and second to none, discover Craftsman timber doors from Calibre Doors.

High quality, affordable doors

A stylish range of high quality, low-maintenance GRP composite doors from Calibre Doors.

Elegantly sculptured profile

Sculptured, elegant and efficient - no wonder it's the homeowner’s choice

Versatile, comprehensive profile

A comprehensive system perfect for both domestic and commercial applications

VS, Bi-folds & Patios

Our Evolve range of vertical sliding sash windows, bi-fold and patio doors are pre-fabricated to the highest standards.

A better lantern roof

Slim contemporary sight lines teamed with unbeatable thermal performance.

A truly warm roof

Celsius Solid Roof creates modern spaces with superior thermal performance

The quick to fit roof

Global is the UK’s number one best-selling conservatory bar length roof system

Market-leading roofs

K2 is a world-renowned brand leader, providing the best in roofs to Europe, Canada and the USA

Six very distinct orangery styles

K2 orangery systems are versatile solutions for any home

Versatile portal frame solutions

Portal frames designed to solve any structural challenge

Providing glass throughout the UK

With 200,000 sq.ft of glass production facilities across four UK sites, we have a 50,000 sealed unit weekly capacity

Highest quality, insulated glass

Purpose-designed Celsius Performance Glass for conservatory roof applications