Smarts Systems
Heritage Plus
Alitherm Heritage provides the ideal solution for heritage applications such as listed building renovations and large scale replica-refurbishment projects where planning constraints are to be considered. The window is designed to be built as a series of horizontal modules which can be stacked using horizontal couplers to form a multi-part window featuring a specially design drip bar between modules.
Introducing the Smarts Heritage Plus Doors & Windows range, where modern innovation meets timeless elegance. These doors and windows are designed to blend seamlessly into the architecture of any building, while also providing advanced features for comfort and security.
Crafted with precision and attention to detail, the Smarts Heritage Plus range is a stunning fusion of classic aesthetics and cutting-edge technology. The frames are available in a range of elegant colors and finishes, including traditional woodgrain effects, to perfectly match any style of home.
What sets these doors and windows apart is the advanced thermal performance and security features. The doors and windows are fitted with high-performance glazing, which ensures excellent thermal insulation and noise reduction, while also enhancing the natural light flow into the home.
The Smarts Heritage Plus range is also designed with security in mind, incorporating multiple locking points, strong hinges, and toughened glass. These features ensure that your home is not only beautiful but also safe and secure.
So, whether you’re looking to update your home’s aesthetic or upgrade your home’s energy efficiency and security, the Smarts Heritage Plus Doors & Windows range has got you covered. Experience the perfect blend of classic elegance and modern innovation with the Smarts Heritage Plus range.

Material | Aluminium Polyamide | ||
Dual Colour | Yes | ||
Thermally Broken | Yes | ||
NBS Available | Yes |
Side Hung Max Width | 600 |
Side Hung Max Height | 1400 |
Top Hung Max Width | 1400 |
Top Hung Max Height | 1400 |
Fixed Max Width (mm) | 2100mm |
Fixed Max Height (mm) | 2100mm |
Slingle Door Max Width (mm) | 900mm |
Slingle Door Max Height (mm) | 2100mm |
Glazing (mm) | 24, 28, 32 & 36 double or triple glazed units |
Frame Depth (mm) | 47mm |
Typical Sightlines (mm) | 59mm |
WER Rating | B |
uValue | 1.5W/m²K using 1.0 W/m²K centre pane |
Document L Compliant | Yes |
Kitemark | Yes |
BS 6375-1:2009 | Yes |
BS 4873 | Yes |
Heritage Single Doors
Door Type | Max Sash Width (mm) | Max Sash Height (mm) | Glazing (mm) | Sightline (mm) |
---|---|---|---|---|
Single Door | 900 | 2100 | 24-32 | 59 |
Heritage Double Doors
Door Type | Max Sash Width (mm) | Max Sash Height (mm) | Glazing (mm) | Sightline (mm) |
---|---|---|---|---|
Double Door | 900 | 2100 | 24-32 | 59 |
Door Type | Air Permiability Classification | Watertightness Classification | Resistance to Wind |
---|---|---|---|
Open In | 4,600Pa | 3A, 100PA | 3, 1200Pa |
Open Out | 4,600Pa | 8A, 450Pa | 3, 1200Pa |
Heritage Windows
Window Type | Max Length (mm) | Max Height (mm) | Max Area (m2) | Friction Stays (up to & inc) | Transom/Mullion Len (mm) inc Frame Max | Air Permeability Classification | Watertightness Classification | Resistance to Wind | Exposure Cat. as given in Table 1 of BS 6375-1:2009 |
---|---|---|---|---|---|---|---|---|---|
Projecting Top Hung Int Bead | 1400 | 1400 | – | 24″ | – | 4 | 7A | AE2400 | 2000+ |
Projecting Top Hung Ext Bead | 1400 | 1400 | – | 24″ | – | 4 | 5A | AE2400 | 2000+ |
Projecting Side Hung Int Bead | 600 | 1400 | – | 16″ | – | 4 | 7A | AE2400 | 2000+ |
Projecting Side Hung Ext Bead | 600 | 1400 | – | 16″ | – | 4 | 5A | AE2400 | 2000+ |
Fixed Int Bead | 2100 | 2100 | 4.2 | – | – | 4 | 7A | AE2400 | 2000+ |
Fixed Ext Bead | 2100 | 2100 | 4.2 | – | – | 4 | 5A | AE2400 | 2000+ |
Multilights W20035 T/M Int Bead | 2100 | 2100 | 2.5 | – | 1450 | 4 | 7A | AE2400 | 2000+ |
Multilights W20035 T/M Ext Bead | 2100 | 2100 | 2.5 | – | 1450 | 4 | 5A | AE2400 | 2000+ |
Crittall Effect
The Crittall effect is a unique design feature that adds a touch of vintage charm and elegance to any space. This effect is achieved by incorporating Crittall-style frames and panes in doors and windows. These frames are made from slender, black metal bars that form a grid pattern, creating a striking visual impact.
Heritage doors and windows with the Crittall effect are an excellent choice for those who appreciate the timeless beauty of traditional architecture. These doors and windows are meticulously crafted to mimic the design of the original Crittall frames from the early 20th century, giving your space a classic and refined look.
In addition to their aesthetic appeal, doors and windows with the Crittall effect are also highly durable and long-lasting. They are made with high-quality materials that can withstand harsh weather conditions and heavy use, ensuring that your investment lasts for years to come.
The Crittall effect on heritage doors and windows is a versatile design element that can be used in a variety of settings, from modern homes to traditional buildings. They can be customized to fit any size or style of opening, and they are available in a range of finishes and colors to complement any interior or exterior decor.
Overall, if you’re looking for a way to add character and sophistication to your space, the Crittall effect on heritage doors and windows is a great option. They are a timeless design choice that will never go out of style and are sure to make a lasting impression on anyone who sees them.