Now with Flush or Stepped Sash Detail Option
How will Smart® Alitherm 400 Windows and Doors enhance my property?
Combining outstanding value and quality, with class-leading performance and security, the new Alitherm ® 400 system provides a range of stylish casement windows and single and double doors
The system is perfect for a wide variety of projects, including both new build and refurbishment, residential and light commercial applications and is proudly made in Britain by Smart. Alitherm 400’s design incorporates Smart’s innovative polyamide thermal break technology, which creates a barrier between the cold air outside and warm air inside, significantly reducing thermal transmittance and enhancing the system’s overall U-value. The system is also fully compliant with changes to Document L of the Building Regulations, is rigorously tested to PAS 24:2016 as standard and exceeds the requirements for weather resistance and security performance
Building Regulations Compliant
Full compliant with changes to Document L of the building regulations
PAS 24:2016 Approved
Enhanced security for aluminium windows and doors
Unrivalled choice of colour
In addition to our 5 colour collections, we can match any Classic RAL colour
Alitherm 400 Casement Windows
Colour Options
Matt Black RAL 9005
Anthracite Grey RAL 7016
Gloss White KL009
Naturals® Textured Grey KL014ST
Naturals® Textured Black KL015STCotswold Colours
For traditional projects and conservation areas, the Cotswold colour range is the perfect choice with its selection of classic shades and warm tones. It provides the ideal finish for both new-builds and heritage properties
CWD001 Burford White
CWD002 Bourton Cream
CWD003 Bilbury Stream
CWD004 Bath Stone
CWD005 Cheltenham Stone
CWD006 Fairford Tile
CWD007 Moreton Ground
CWD008 Painswick Grey
CWD009 Tetbury Field
CWD010 Wotton Olive
CWD011 Stroud Sky
CWD012 Cotswold Green
CWD013 Chedworth Green
CWD014 Westonbirt Leaf
CWD015 Slad Stone
Sensations Textured Colours
Our range of metallic finishes that offers an unbeatable combination of style and durability. Popular for use in both architectural and restoration projects, the unique palette of colours opens up a whole new approach to aluminium doors
The Sensations range is resistant to corrosion with a durable, scratch-resistant finish
Our image reproduction doesn't show well the silver stipple texture built-in to every Sensations finish
SEN001 Velour White
SEN002 Dune
SEN003 Sand
SEN004 Sienna Brown
SEN005 Mars Red
SEN007 Ocean Blue
SEN009 Sky Blue
SEN010 Provence Green
SEN011 Amazon Green
SEN012 Antique Green
SEN013 Obsidian Black
SEN014 Vulcan Black
SEN015 Antique Grey
SEN016 Platinum Grey
SEN017 Silver Grey
SEN018 Olive Green
SEN021 Cocoa Brown
SEN022 Frost White
SEN024 Chestnut Brown
SEN025 Desert Grey
SEN026 Diamond Grey
SEN028 Steel Blue
SEN031 Caramel
SEN032 Basque Red
Naturals Colours
Colour-rich coatings in a variety of shades and hues are available in our Naturals range, offering a stylish colour coating for your doors
The Naturals range offers versatile shade options and full-protection for your home’s aluminium doors
KL001 Cream
KL002 Dark Red
KL003 Dark Blue
KL004 Dark Green
KL005 Anthracite Grey
KL006 Brown
KL007 Dark Brown
KL008 Matt Black
KL009 Gloss White
KL010 White
KL011 Off White
KL012 Grey
KL013 Dark Grey
KL014ST Textured Anthracite
KL015ST Textured Black
Alchemy Colours
Alchemy is our premier range of finishes. An innovative, new solution; it is a hybrid of anodised and powder coating. The range combines the aesthetics of an anodised finish with the high level of protection and durability that a powder coat finish offers
ALC001 Black
ALC002 Anodic Bronze
ALC003 Gold
ALC004 Golden Beach
ALC005 Titanium Grey
ALC006 Silver
ALC007 Storm Grey
ALC008 Steel Grey
Creations Colours
Perfect for designer doors, the Creations colour range is designed to offer a striking, distinctive solution. These elegant, timeless shades create an elegant, bespoke focal point for a home
CTN001 Sapphire Blue
CTN002 Pastel Blue
CTN003 Mint Green
CTN004 Moss Green
CTN005 Ruby Red
CTN006 Zinc Yellow
CTN007 Melon Yellow
Will my Smart Alitherm 400 Windows and Doors be energy efficient?
Smart Alitherm Windows and Doors are designed with energy efficiency in mind, incorporating advanced features that ensure they are an excellent investment for anyone looking to enhance their property’s thermal performance and reduce energy consumption
The windows and doors are designed with extended polyamide thermal breaks, a crucial feature for enhancing thermal insulation. These breaks effectively interrupt the thermal path through the door frame, reducing heat transfer from the inside to the outside of your property and vice versa. This means that during winter, heat stays inside, and in summer, it stays outside, maintaining a comfortable indoor climate without excessive use of heating or cooling systems
By installing Smart Alitherm 400 Windows and Doors, you contribute positively to the overall energy performance of your property. Not only do they help in reducing your energy bills by keeping your home warmer in the winter and cooler in the summer, but they also support your efforts in making your home more sustainable and environmentally friendly
Window and Door Configurations
Handles
Frequently Asked Questions
What sizes are available for Smart Alitherm 400 Windows and Doors?
Smart Alitherm 400 Windows and Doors are highly customisable, and minimum and maximum sizes depends on glass specification and opening style, but is flexible enough to ensure flexibility to fit various architectural designs and personal preferences.
Are Smart Alitherm 400 windows and doors suitable for commercial use?
Absolutely. Visoglide Plus doors are engineered for both residential and light commercial settings, offering robust performance, weather resistance, and sleek styling to suit offices, restaurants, and other light commercial venues, as well as private homes.
How can I find a local installer for Smart Alitherm 400 Windows and Doors?
We offer an installation service for Smart Alitherm 400 Windows and Doors within the following counties: Monmouthshire, Powys, Newport, Blaenau Gwent, Merthyr, Cardiff, Hereford and parts of Glocestershire
How do I maintain my Alitherm 400 Windows and Doors to ensure longevity?
Maintaining your Alitherm 400 windows and doors involves regular cleaning of glass and frames with mild detergent, removing debris from tracks, and checking seals and hardware periodically to ensure everything is in good working order. This simple routine can significantly extend the life and performance of your windows and doors.
Close-ups
Recent Local Installations of Aluminium Windows and Doors by Heronhurst
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Technical
| Product Type | Maximum Width | Maximum Height | Depth |
| Alitherm 400 Side Opening Hung Casement Windows | 866mm | 1400mm | 70mm |
| Alitherm 400 Top hung Opening Casement Windows | 1400mm | 1400mm | 70mm |
| Alitherm 400 Fixed Windows and Screens | 2100mm | 2100mm | 70mm |
| Alitherm 400 Single Door Open In | 1000mm | 2400mm | 70mm |
| Alitherm 400 Double Door Open In | 2000mm | 2400mm | 70mm |
| Alitherm 400 Single Door Open Out | 1000mm | 2400mm | 70mm |
| Alitherm 400 Double Door Open Out | 2000mm | 2400mm | 70mm |
Performance
| Product Type | U-value Double Glazed | U-value Triple Glazed | WER |
| Alitherm 400 Side Opening Hung Casement Windows | 1.4u (1.0u Centre Pain) | 1.1u (0.7u Centre Pain) | A |
| Alitherm 400 Top hung Opening Casement Windows | 1.4u (1.0u Centre Pain) | 1.1u (0.7u Centre Pain) | A |
| Alitherm 400 Fixed Windows and Screens | 1.4u (1.0u Centre Pain) | 1.1u (0.7u Centre Pain) | A |
| Alitherm 400 Single Door Open In | 1.4u (1.0u Centre Pain) | 1.1u (0.7u Centre Pain) | B |
| Alitherm 400 Double Door Open In | 1.4u (1.0u Centre Pain) | 1.1u (0.7u Centre Pain) | B |
| Alitherm 400 Single Door Open Out | 1.4u (1.0u Centre Pain) | 1.1u (0.7u Centre Pain) | B |
| Alitherm 400 Double Door Open Out | 1.4u (1.0u Centre Pain) | 1.1u (0.7u Centre Pain) | B |
As Approved Installers for Smart Aluminium Alitherm 400 Windows and Doors, we offer our dedicated survey and install service throughout South Wales including Abergavenny, Crickhowell, Usk, Monmouth, Brecon, Chepstow, Cwmbran, Newport, Cardiff and Merthyr areas and beyond
Made in the UK
Our Smart Aluminium Windows, Doors and Screens are individually made in the UK