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Available within 7 Days from Order! 

Bi Folding Door

Warmcore Aliminium


Warmcore Aluminium bi folding doors combine the durability and style of aluminium with the thermal performance of PVC. It’s the warmer choice that saves the homeowner money.


  • Warmcore aluminium is actually 25% more thermally efficient than traditional aluminium systems

  • Standard double glazed warmcore bi folds have a 1.4 U Value rating

  • Triple glazed warmcore bi folds have a 1.0 U Value rating

  • 10 year product warranty

  • Strong and secure with Secured by Design PAS24 Standard option available

  • Different configurations available – fold from one side to the other or French door opening without needing to fold all the doors open

  • Fantastic colour palette, discreet magnets, three curved handle options and a choice in external beading (pencil round as standard)

  • Range of threshold options

  • Option to include blinds within the glass units to give you increased flexibility and privacy whilst retaining a stylish and modern look


For a full product brochure please see below as well as a full product installation guide


Colour Range

Available in a choice of 4 powder coated colours, WarmCore allows you to pick a different colour for each side of your door - at no extra cost

Anthracite Grey
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With the innovative design you can select the door configuration that suits your needs. 

(NB. there is no external handle on the 4 door and 6 door configuration where all doors fold to one side)



Matt Black
Satin Silver
Brushed Graphite
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  • Pencil Round
  • Chamfered
  • Square
  • Decorative

Sill options include a WarmCore standard threshold with integral sill, or standard threshold with an additional 150mm thermally-broken aluminium sill.

The Part M compliant low threshold design is thermally-broken aluminium and optional ramps and cover trims can be used internally, externally or both, depending on requirements.

Part M compliant low threshold can also be installed without any ramps, so that flooring can be laid up to the edges of the threshold or the threshold can be neatly set into the floor to create a flush floor level through the doorway.

Glazing Options 
  • Square all round (horizontals and verticals)

  • Chamfered (option for verticals)

  • Triple glazing uses 44mm TG bead all round (horizontals and verticals)

WarmCore doors can be glazed with 28mm double glazed units or 44mm triple glazed units.Glazing can be carried out with a choice of aluminium beads for a neat internal finish:

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For urgent enquiries, please telephone the branch directly. Branch Finder

Head Office 305 Abergele Road, Old Colwyn, Colwyn Bay LL29 9YF  Tel 01286 674023
Branch Locations:   Caernarfon   -   Cheadle Hulme   -   Crewe   -    Mold 
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