ABOUT UPVC DOORS

Since the 1970s there has been an increasing use of UPVC external domestic doors. The material is popular for doors because of its good overall performance, with hardly any maintenance required. To make UPVC doors, UPVC compound is extruded into lengths of profile, which are then cut to length and assembled into UPVC door frames. Corner joints of UPVC doors are heat welded; other joints in UPVC doors may be welded or may use screw fixings. UPVC doors can be obtained inward and outward opening.

Basic formulations of UPVC are rather brittle, particularly when cold. UPVC for doors is specially formulated for improved toughness. Other additives reduce damage from ultraviolet light. Ultraviolet light from the sun will tend to break down the surface layer of white UPVC. At first it will become rather more brittle. Then a very thin layer will 'chalk' away. The UPVC window will lose its shine and fresh white pigment will be revealed. If suitable stabilisers have been added to the UPVC, the loss of thickness will be too slow to matter.

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For UPVC doors with wood-grain finishes it is important that the coloured film on the surface must last the whole life of the door. It is important that the dyes that give the wood-grain appearance do not fade. Ultraviolet light can make the film more brittle, weakening the whole profile. Dark colours for UPVC doors also have the disadvantage that they can heat up in sunlight to temperatures at which the UPVC begins to soften and distort.

UPVC Doors Online is the UK's largest manufacturer of UPVC doors. Their range of UPVC doors covers more than 200 styles. Doors are delivered within three weeks of order, and carry a ten year guarantee. UPVC Doors Online also manufacture a full range of French Doors, either inward or outward opening, with an extensive choice of glass options including matching side panels if required.

Dortek UPVC Doors is a leading supplier of polyester doors for industrial and commerical applications. Dortek's UPVC doors are particularly suited to applications where hygiene is important, such as food processing plants, food preparation areas, and hospitals. The doors may he hinged, sliding, or have roller action. In dangerous areas, where their is risk of explosion, systems can be supplied which close automatically under air pressure.

Other UK manufacturers of UPVC doors: Anglian UPVC Doors; Protech UPVC Doors; U-Fit UPVC Doors; UPVC Door Company;

Click here for an easy-to-use listing of leading UK suppliers of UPVC doors, provided by Archbone.

DETAILED INFORMATION RESOURCES ON UPVC DOORS

We recommend the following websites, with building product information including manufacturers' specs, standard specifications, and CAD details: Barbour Compendium at www.barbourcompendium.co.uk, RIBA Product Selector Plus at ww.productselector.co.uk, ASC Bricsnet at www.ascinfo.co.uk, Building Products Index at www.bpindex.co.uk, British Board of Agrément at www.bbacerts.co.uk, British Standards Online at www.bsonline.bsi-global.com.

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Other recommended portals: Archbone, Building Design, Homeone Australia, Lighting Directory, Sapling, Stone Network.

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