Why choose an Alitherm Heritage Doors
Smarts Heritage Industrial style doors provide a modern, like-for-like replacement for traditional materials, Alitherm Heritage is the ideal solution for projects where planning or design demands dictate the installation of sympathetic materials. Our Crittal heritage profile has a unique slimline look which can be made in any RAL colour.
Premium Heritage Windows & Doors
Alitherm Heritage Crittall-style windows and doors. Perfect for internal & external.
Visoglide Plus Sliding Doors
Backed By Guarantee
We’ve got you covered. Our products come with a comprehensive 10-year insurance backed warranty to give you ultimate peace of mind.
With Security In Mind
We’ve got you secured. Ultion locks and multi point locking door straps are provided as standard, and all doors can be certified to PAS24 if required.
High Thermal Efficiency
We’ve got you saving. With excellent thermal efficiency (u-values between 1.4 and 1.8W/m²K) you can keep your home warm and stylish.
Super Slim Sightlines
We’ve got your view in mind. See more of your surroundings thanks to some of the slimmest aluminium sight lines available at just 33mm!
Heritage ‘Crittall-Style’ Windows & Doors
Stock Colours and all RAL Colours Combinations Available
Click here to request a copy of our free brochure, which is packed full of product information and design ideas.
WHY ROOF LANTERNS ONLINE?
At Roof Lanterns Online, we know what kind of difference installing quality aluminium windows and doors will make to your home. That’s why we’re always on hand with the products & experience you need.
Safety & Security
Ultion locks feature:
- Double snap resistance
- Unique lock-down mode
- 11 individual pins (twice as many as standard cylinders)
- Nearly 300,000 key combinations
- Anti-drill, pick, and bump
ALITHERM 47 HERITAGE RANGE
Frequently Asked Questions
What is the maximum width or height per sash?
Can I choose the configuration of my Heritage doors?
Can I choose what colour my Heritage window or doors will be?
|Finish||Single / Dual colour, marine quality polyester powder coated|
|Lock Mechanism||Ultion (diamond accredited) Cylinder as std.- multi-point locking|
1.5 w/m2k using a 1.0w/m2k glass unit
|Max sash width||900mm|
|Max sash height||2100mm|
KM 81580 / PAS 24:2012 / KM81543 / BS4873
|Glazing||DG 28mm / TG 32mm|
|Add ons||20mm, 42mm|
|Cills||85mm, 150mm, 190mm, 225mm, 300mm|
|Astragal Bar||20mm / 41mm flat bar|
British Manufacturer & Supplier
Over 25 years’ experience supplying Aluminium Windows and Doors..
1000’s of door designs
One of the widest selections of doors, colours, finishes and hardware in the UK.
Free UK Delivery
Impressive lead times & fast delivery service throughout the United Kingdom.
Impressive Security Accreditations
PAS24:2016, BM Trada Q-Mark, Secured By Design (SBD), Document Q & Document M.