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Colin’s Sash Windows is one of the biggest suppliers of steel look aluminium Crittall® style doors and windows. In fact, our Heritage Door is one of our biggest sellers after sash windows. With so many sales, our experience is unrivalled in providing customers with the designs they need.

We’ve chosen the best-selling, most popular Heritage aluminium doors from Smart systems. Their Alitherm steel alternative heritage windows and doors are a type of high-performance aluminum glazing system designed for use in residential and commercial buildings. They are known for their high thermal performance, security, durability, and aesthetics.

The Alitherm Heritage range is specifically designed to replicate the look and feel of traditional Crittall® style steel windows and doors, while offering the benefits of modern aluminum technology. The frames are slim and elegant, with a chamfered profile that provides a clean and stylish finish.

One of the key features of the Alitherm industrial style doors in the Heritage range is its thermal performance. The frames are thermally broken, which means they have a layer of insulation between the inner and outer parts of the frame. This helps to reduce heat loss and improve energy efficiency, which can lead to lower heating bills and a more comfortable living environment.

Another important feature of the Heritage Crittall® alternative system is its security. The windows and doors are designed to meet the latest security standards, with multi-point locking systems and toughened glass as standard. This helps to deter intruders and keep your property safe.

The Alitherm Heritage range is also highly durable, with a robust construction that can withstand even the harshest weather conditions. The frames are coated with a high-quality powder coating that is designed to resist fading, chalking, and peeling, ensuring that your windows and doors look great for many years to come.

Overall, the Smart systems Alitherm Heritage windows and doors are an excellent choice for anyone looking for high-performance, secure, and stylish glazing solutions for their home or business in the unique Crittall® style.

https://colinssashwindows.co.uk/french-doors/heritage-aluminium-doors/

Our main seller is obviously our uPVC sliding sash windows. Colin’s Sash Windows is best known for disrupting the upvc sash window market in the UK in 2014 by introducing affordable fixed prices for upvc sash windows in the UK. Before this they were generally only available at very high prices through window installers. The quality of our sash windows is excellent. Starting at £288 plus VAT for white and £355 plus VAT for standard woodgrain colours, we are often asked if the quality is good because of the low prices. Over 40% of our business is from repeat customers (this doesn’t include recommendations). We think that speaks for itself.

Because of demand from our customers we don’t just sell sash windows. We supply one of the most sought after products in the window industry this decade – we are market leaders in cheaper alternatives to the renowned steel Crittall® windows. Interior Aluspace doors and partitions that are almost as slim as steel and external steel look aluminium Smart Systems Alitherm Heritage Crittall® style doors. These are now our second biggest seller. We have an unrivalled knowledge of these products and possibly the best prices in the UK.

One of our other best sellers are the uPVC flush casement windows. We have very low prices with fast delivery on these.