Keystone Supplies, Unit 17 Storforth Lane Trading Estate, Hasland, Chesterfield, Derbyshire, United Kingdom S41 0QQ
01246 201523‬
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Bi-Folding Doors

Keystone Supplies Limited is based in the historic market town of Chesterfield, Derbyshire.
As an independent supplier of timber windows, doors, flooring and furniture, Keystone Supplies have the ability to design and supply entire projects, meeting the requirements of any particular development.

FEATURES

Available in Oak, Meranti or Redwood.
We offer fully glazed or half glazed options,
Strengthened timber combined with top performance enables fully glazed doors to offer exceptional thermal efficiency and locking mechanisms keep your home secure, with big views and lots of natural light into your home.
We can provide Stable Doors, French Doors, Bi-folding Doors and Patio Doors, we cater for all areas of your property, providing various solutions to utilise and liberate the relationship between house and garden.

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CONTACT US

Got a question you want answered?

If you have any questions or would like to know more please use the contact form below to get in touch with Keystone.

TECHNICAL DATA

We offer truly bespoke made to measure products selected to complement the English home - whether you live in a period property , a Victorian terrace or a more modern property in need of contemporary flair.

TIMBER


Hardwood – Engineered Meranti or Engineered European Oak

PROFILE AND CONSTRUCTION

Frame thickness 88mm Square Opening out

COLOURS AND FINISH

High performance coatings in any standard RAL colour paint finish Preservation micro porous, paint / stain micro porous flow coat applied, 3 coats Choice of different stains Dual colour option

GLASS

Glazing D.G.U 24mm, 4mm/16mm gap TGI/4mm soft coat Low E Glaze gap Argon gas filled: centre pane Uvalue 1.1W/M2k Patterned (obscure) glass – optional Laminated or toughened (safe) and anti–burglary glass – optional

SPACER BAR

Colour availabe: RAL 7035 Standard Optional: RAL 9016, RAL 9005, RAL 8003, RAL 8016, RAL 7035, RAL 7040

BARS

Astragal 18mm, 20mm, 26mm, 60mm, lead bars

GLAZING BEADING

Internally beaded to prohibit removal of the glass from outside with concealed glazing pins Silicone continuous neutral cure seal both sides

GASKET

Q – Lon by Schlegel

HINGES AND LOCKS

Standard friction hinges Shootbolt System

HANDLES

Standard range Urbane stainless steel Antique range

WINDOW CILLS

Cills may be added to the bottom of frame

VENTILATION

Trickle vents may be added to head of frame or head of sash Outside conopy may be covered by timber head drip