WarmCore Aluminium Doors & French Doors


Total Glass can supply and manufacture WarmCore Aluminium standard doors and French Doors. The Doors have been designed to be beautiful, strong, secure and 25% more thermally efficient than any of its competitors.

Total Glass can manufacture and supply a range of doors using this outstanding technology including traditional french doors, standard double or single doors and bi-folding doors in various styles all made in our factory in Liverpool, Merseyside. Like all our products, everything is manufactured to a very high-standard and conforms to stringent building regulations and safety standards. You can choose from a host of added features too, including different paint options and comprehensive guarantees.


Thermal Properties

WarmCore bi-folds have been designed to be as thermally efficient as possible. Built around a full width thermal core – maximising the use of lower conductivity material – WarmCore is 25% more efficient at keeping heat in your home than traditional aluminium solutions

Triple Glazing

Robustly designed to take the weight of triple glazed units as standard, choose this option for the ultimate thermal performance at 75% better than standard double glazed aluminium bifolds. Opting for 44mm triple glazing rather than standard 28mm double glazing reduces the whole bifold U-Value rating from 1.4 to 1.0

Sash Styling

A choice of 4 external aluminium door sash designs, ranging from a contemporary pencil round to a decorative sculptured look, enables you to personalise your door or echo the style of your existing windows. Styles include: Pencil round - Decorative - Square & Chamfered

Threshold Options

WarmCore doors come with a range of threshold options, including ultra low Part M compliant aluminium thresholds that help avoid trip hazards. Alternatively if you have a step down from your door opening a choice of sills is also available. Configurability is key and you can be confident that WarmCore has the right option for your home.

Standard Colours

Available, as standard in a choice of 2 powder coated colours in white and anthracite grey with other colours available to order, WarmCore also allows you to pick a different colour for each side of your bi-fold doors. Want a different colour on the outside to the inside? – with WarmCore that’s no problem

RAL Colours

Along with the standard colours of white and anthracite grey there are other colours available to order. WarmCore bifolds can be provided in a powder coating based on the RAL choice of colours giving you an almost endless variety of options for the colours of your new bifolding doors.

Hardware Styling

WarmCore door handles gracefully curve around door sashes when open, tucking into the glass reveal and allowing the door sashes to fold perfectly flat. Handles come in a range of styles including silver, black, white and brushed chrome effect

Sill Choices

WarmCore bi-folds come with a choice of sill sizes. There are four options available which will allow you to choose the style of sill that will compliment your home


WarmCore provides the lowest U-Value of any aluminium doors, bifolds and windows on the market.

U-Values explained:

A U-Value is basically a measure of heat loss through a structural element. It is calculated on the rate at which heat transfers through 1 square metre of a structure and is stated in W/m2K. U-Values are used by the construction industry to compare the thermal performance of different materials and products.

WarmCore's Approach:

WarmCore's approach from inception was designed to be as thermally efficient as possible. Built around a full width thermal core - maximising the use of low conductive material - WarmCore is 25% more efficient at keeping heat in your home than traditional aluminium doors. Yet it doesn’t compromise strength as the outer faces of the profile are high grade aluminium, positioned to add the greatest structural rigidity


From the exceptional U-Values, to the multiple weather-seals, every element of your door is precisely manufactured and installed to exacting standards. Performance, reliability and ease of use comes from a meticulous attention to detail.

From the anodised finish of the hardware - suitable for coastal use - to the 60-80 micron powder coat finish on the aluminium (marine grade is 40 microns thick), WarmCore doors have been designed to stand the test of time.

WarmCore Performance:

  • All fixings used are stainless steel - chosen to resist corrosion
  • WarmCore doors carry a comprehensive 10 year guarantee
  • Inbuilt glass adjustment device
  • Multiple weather-seals
  • High performance, easy clean glass
  • Low threshold and sash sightline
  • Triple weather-sealing on all sash interlocks


Our range of handle styles helps provide those vital finishing touches for your new door system.

Matt Black Handle

Satin Silver Handle

Brushed Graphite Handle

Trade & Commercial Enquiries

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Total Complex, Overbrook Lane,
Knowsley Business Park,
Knowsley, Merseyside,
L34 9FB.
Telephone: 0151 549 2339
Email: sales@totalglass.com

Opening Hours

Monday - Friday:8.30 - 16.30
Saturday & Sunday:Closed