Aluminium windows have become the go-to choice for homeowners who want maximum natural light, ultra-slim sightlines and a contemporary aesthetic that complements both modern new builds and period renovations. But with a growing number of systems on the market — from Reynaers and Schüco to ALUK and Smart — how do you decide which is right for your property?
The first thing to consider is thermal performance. Modern aluminium windows use a polyamide thermal break to prevent cold bridging, and the best systems now achieve U-values as low as 1.0 W/m²K — comfortably exceeding Building Regulations and rivalling timber for insulation. Reynaers' MasterLine 8 system, for example, combines HI (High Insulation) technology with sightlines of just 65 mm, giving you an exceptionally slim frame without sacrificing energy efficiency.
Security is another critical factor. Look for systems that are PAS 24:2016 certified and carry the Secured by Design mark — the UK police-backed standard for residential security. All Reynaers systems installed by AGG Group meet these standards as a minimum, with multi-point locking and reinforced hardware included as standard.
If you are planning a project in Liverpool, Merseyside or the wider North West, our team can advise on the best system for your property, arrange a free site survey and provide a no-obligation quotation. Get in touch to start the conversation.