THERMSLIDE SLIDING DOORS
Our Thermslide Sliding Door system combines slim aluminium frames with our high-performance Reflex® glass units to deliver a stylish, secure and energy-efficient solution for modern homes.
Designed for patios and garden rooms, these precision-engineered sliding doors offer smooth operation, excellent thermal performance, and a contemporary look that complements our minimalist aluminium rooflight range. Every system includes our Reflex® double glazing with an industry-leading 10-year unit seal warranty.
Thermslide aluminium sliding doors allow you to bring the outside in, flooding your home with natural light and creating a seamless connection to your outdoor space.
If you’re planning a project that includes sliding doors and rooflights, get in touch today to discuss our multi-buy discounts — or complete the form below for a quick quote.
Fully aluminium, thermally broken frame
Quick and easy to install
Easy clean glass as standard
We’ve been manufacturing and supplying aluminium sliding doors and rooflights to homeowners and installers across the UK since 2001. With years of experience behind us, we know how to deliver great quality at a fair price — without cutting corners on service or performance.
When you buy direct from Roof Maker, you’re dealing with the experts who build your products. That means straightforward advice, honest lead times, and reliable aftercare from a team that takes pride in every order. Our Reflex® glass units are produced in our Leicester factory, and all deliveries are handled on our own transport — so your doors arrive on time and in perfect condition.
Choosing Thermslide aluminium sliding doors is a smart, dependable investment in your home. Read on to learn more, or fill in the form below for a quick quote from our team.
Product Overview
Our Thermslide® aluminium sliding doors use Roof Maker’s high-performance Reflex® glass units, tested to BS EN1279 Parts 2 & 3 for lasting clarity and reliability.
Built in the UK and supplied directly from our Leicester facility for quality control you can trust.
Designed to your specification – choose panel layout, track configuration, and opening direction to suit your project.
Energy-efficient Reflex® double glazing paired with a fully thermally broken aluminium frame achieves U-values as low as 1.4 W/m²K, helping to keep your home comfortable all year round.
Optional blue-tint or laminated glass upgrades offer extra UV protection, enhanced safety, and added peace of mind.
Durable aluminium frames finished in Black, White or Grey, with custom RAL colours available on request.
2500 mm maximum pane width / 2400 mm maximum pane height for wide, uninterrupted views.
Every order is custom-made and confirmed at the order stage — so your exact configuration is tailored to your space.
Key Features
Fully thermally broken aluminium frame with a tough, marine-grade powder-coated finish for lasting durability.
High-performance Reflex® double glazing achieving U-values as low as 1.4 W/m²K for reliable energy efficiency.
25 mm slim interlock and configurations of up to 6 sliding panels for wide, open views.
Air permeability: 600 Pa – keeping drafts firmly out.
Water tightness: 300 Pa – proven weather protection in UK conditions.
Wind load resistance: Class C2/B – built to perform even in exposed locations.
Security tested to PAS 24:2022 – ensuring robust protection and peace of mind
Energy rating: C – a great balance of performance and affordability.
Tested to BS 6375-1, BS 6375-2 and BS 6375-3 for quality and compliance.
Frequently Asked Questions
► Are sliding doors a good choice for my patio or garden?
Yes. Thermslide aluminium sliding doors are an ideal way to open up your living space and create a seamless link to your garden or patio. With their slim 25 mm sightlines, smooth sliding action, and high-performance Reflex® glass, they bring in more natural light while keeping your home warm, secure, and comfortable.
► What’s the difference between Thermslide and Thermslide Plus doors?
Both are high-quality aluminium sliding doors built to the same exacting standards, but the Thermslide® range uses our Aluna ESS47 profile system with double-glazed Reflex® units. It offers excellent performance and value, while Thermslide Plus® features the Origin OS-29+ system with triple-glazing options, even slimmer sightlines, and enhanced thermal performance.
► Will sliding doors make my home more energy efficient?
Absolutely. Thermslide® doors use thermally broken aluminium frames and energy-efficient Reflex® double glazing with U-values as low as 1.4 W/m²K. This helps to retain heat during winter and reduce energy bills all year round.
► Are Thermslide® doors secure?
Yes. Every Thermslide® system is tested to PAS 24:2022, offering robust protection and peace of mind. Toughened safety glass and precision-engineered hardware ensure your doors perform safely and securely for years to come.
► Do sliding doors add value to a property?
Aluminium sliding doors are a timeless, desirable feature that enhances both the look and feel of your home. The modern, open design of Thermslide® doors can increase natural light, improve usability, and make your property more attractive to future buyers.
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THERMSLIDE SLIDING DOORS
Our Thermslide Sliding Door system combines slim aluminium frames with our high-performance Reflex® glass units to deliver a stylish, secure and energy-efficient solution for modern homes.
Designed for patios and garden rooms, these precision-engineered sliding doors offer smooth operation, excellent thermal performance, and a contemporary look that complements our minimalist aluminium rooflight range. Every system includes our Reflex® double glazing with an industry-leading 10-year unit seal warranty.
Thermslide aluminium sliding doors allow you to bring the outside in, flooding your home with natural light and creating a seamless connection to your outdoor space.
If you’re planning a project that includes sliding doors and rooflights, get in touch today to discuss our multi-buy discounts — or complete the form below for a quick quote.
Fully aluminium, thermally broken frame
Quick and easy to install
Easy clean glass as standard