SMART Windows
Welcome to the Smart Systems aluminium window collection, supplied and installed across Andover, Hampshire, and the surrounding areas by KJM Group. As the UK’s leading supplier of bespoke aluminium extrusions, Smart Systems delivers exceptional window profiles that combine architectural elegance with outstanding strength and security. Whether you are building a contemporary new home, upgrading a light commercial property, or replacing traditional steel Crittall windows in a historic building, Smart’s versatile aluminium range provides a high-performance, low-maintenance solution designed to transform your property’s exterior.
The advantages
Smarts Aluminium Windows
The primary advantage of modern aluminium windows is their incredible structural strength, which allows for significantly slimmer frames and larger expanses of glass compared to traditional uPVC or timber. Previously, aluminium was prone to heat loss, but the entire Smart Systems range utilises advanced polyamide thermal break technology. This creates a highly effective barrier between the cold outside air and the warm interior, easily meeting the latest UK Building Regulations for thermal efficiency. Furthermore, the frames are finished with a marine-quality polyester powder coating, ensuring a highly durable, fade-resistant surface that will not rust, peel, or warp, even in harsh weather conditions.
Flush, Stormproof or Tilt and Turns?
Smarts 400 or Heritage
We offer two distinct Smart Systems profiles to cater to different architectural requirements. The Alitherm 400 is a highly versatile, class-leading system that is fully PAS 24:2022 approved for enhanced security. Featuring a 70mm frame depth, it is available in tilt and turn, flush, slimline, or standard casement styles, offering a sleek, contemporary look that achieves excellent U-values of 1.4 W/m²K. For older properties or Art Deco renovations, the Alitherm Heritage provides the perfect solution for replacing old steel windows. With a narrow 47mm frame depth and ultra-slim 59mm sightlines, it perfectly replicates traditional Crittall aesthetics while providing modern thermal performance and bespoke heritage hardware options. Explore both ranges below to view custom configurations and our extensive palette of standard, metallic, and dual-colour finishes.
SMART Windows Brochure
Frequently Asked Questions
What is a polyamide thermal break in an aluminium window?
Aluminium is naturally a highly conductive material, meaning it transfers heat easily. A polyamide thermal break is a strip of rigid, low-conductivity plastic that is inserted between the inner and outer aluminium sections of the window frame. This breaks the thermal bridge, preventing the cold air outside from transferring to the inside of your home, and drastically improving the window’s overall energy efficiency.
Can Alitherm Heritage windows be used as direct replacements for steel Crittall windows?
Yes. The Alitherm Heritage system was specifically engineered for this exact purpose. It features a very narrow 47mm frame depth and typical sightlines of just 59mm, which closely mimics the slim profiles of traditional steel windows. It is frequently used in listed building renovations and heritage projects where strict planning constraints require the original aesthetics to be maintained.
How secure are the Smart Systems Alitherm 400 windows?
The Alitherm 400 system is highly secure and has been fully tested and approved to the latest PAS 24:2022 enhanced security standards. The inherent strength of the extruded aluminium frame, combined with multi-point locking mechanisms and internal glazing beads, provides a robust defence against forced entry.
What colour options are available for these aluminium windows?
Smart Systems offers an extensive range of marine-quality polyester powder-coated finishes. This includes standard solid colours, metallic finishes, and the unique ‘Sensations’ range which provides a textured, tactile surface. Dual-colour options are also available across the range, allowing you to specify a different colour for the inside and outside of the window frames.
Are these aluminium windows difficult to maintain?
No. The factory-applied powder coating is exceptionally durable and resistant to fading, peeling, and corrosion. Routine maintenance simply requires washing the frames periodically with warm, soapy water to remove dirt and environmental deposits, alongside a light annual oiling of the hinges and locking mechanisms to keep them operating smoothly.
Why choose KJM?
Get Your Free Quote Today
Since 1983, KJM Group has been installing high-quality glazing solutions across Hampshire and the surrounding areas. As an independent, award-winning Which? Trusted Trader, we pride ourselves on delivering honest advice, transparent pricing, and a strict no-pressure sales policy.
Installing architectural aluminium requires precise surveying and exact fitting tolerances. Our experienced, in-house installation team ensures every Smart Systems frame is fitted flawlessly, respecting your home throughout the process. From the initial consultation through to our comprehensive aftercare service, we provide a reliable, professional experience that ensures your new windows perform exactly as they should for decades to come.