PVCu Doors

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Styles of PVCu Doors

There are several different styles of entrance and exit doors designed for residential properties and we will deal with them in the following categories: –

PVCu Doors - Green Composite Door Residential door is the term given to ordinary single doors, including PVCu doors, timber doors and composite doors and generally refers to the main front or rear entrance / exit door.  Residential PVCu doors often have one or more fixed side panels or an attached ‘flag’ window 

PVCu Doors - Light oak French doors Double PVCu doors are often referred to as French doors and can be manufactured to open either inwards or outwards.  They have a main (first opening) door and a secondary door.  For wide ‘brick to brick’ openings one or more fixed side panels need to be included in the design

PVCu doors - PVCu sliding patio doors Two types of patio PVCu doors are available.  Tilt and slide patio doors offer ventilation by tilting the door inwards without having to slide the door open whereas an in-line patio door only offers the slide function.  Both types of patio PVCu doors can be manufactured in 2, 3 or 4 sections

Hardwood bi-fold doors Bi-fold doors can be manufactured with as many as seven sections or door leafs, each up to one metre wide.  This means that bi-fold doors provide the widest opening of all door styles.  They can also be designed so that some or all of the door sections move to one side or the other

What is PVCu?

PVCu is the abbreviation of Un-plasticised Polyvinyl Chloride and is exactly the same product as uPVC.  In day to day use the terms have become interchangeable but officially PVCu has been used since the late 1980’s, bringing the UK into line with the rest of Europe.  This is simply because in most European languages the noun (PVC) is placed before the adjective (unplasticised).

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Polyvinyl Chloride (PVC) is a chemical compound of chlorine, carbon and hydrogen originating naturally from petroleum, natural gas and sodium chloride (common salt). PVC is commonly used in ‘plastic’ sports bags and some shoes after being modified by softening it with the addition of ‘plasticisers’. Un-plasticised Polyvinyl Chloride means that the product has not been modified and therefore not softened, but in its pure form it is still not entirely suitable for windows and doors. Stabilisers and additives are required to improve the longevity, and ensure that it is UV stable and does not discolour.

The amount of these additives differs from one manufacturer to the next to form different compounds, though two common additives are acrylic to harden the compound and Titanium Dioxide to make it appear whiter.

As a result, PVCu: –
• Does not biologically decompose or rot and can be recycled
• Is resistant to weathering
• Is low maintenance
• Is tough on impact
• Retains its shape in normal climate conditions
• Can be reshaped and formed at high temperatures so can be extruded to form window and door profile and even bent to form arched windows

How many different types of PVCu profile are there for PVCu doors and how do I tell which is the best for me?

The term PVCu profile refers to the cross section (shape or profile) of the various extrusions and there are hundreds of different types of PVCu extrusions for windows and doors. The more common ones being manufactured by Deceuninck™, Duraflex™, Rehau™, Synseal™, Profile 22™, Network VEKA™, Plastmo™ and Kommerling™. Each manufacturer of PVCu doors has a number of different product ranges to serve both commercial and residential customers and within each range there are individually shaped profiles for doors and windows. Breaking it down even further, different shaped extrusions are required for window and door outer frames, sashes, casement vents, door leaves, glazing beads, bay poles, sills, mullions and transoms

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PVCu profiles for PVCu doors are also available in a wide range of colours including 6 different shades of white, woodgrain effects attempting to replicate, mahogany, oak and rosewood among others, and solid colours such as red, blue, black, green and cream. When specifying white PVCu windows it is important that the frames and sills are made from the same compound and therefore are the same shade of white. O1 is the ‘whitest’ shade of white but it would be unsatisfactory to fit it onto a ‘creamy’ coloured white sill. The issue is highlighted when it comes to conservatories as many installers use conservatory roofs and frames from different manufacturers. This could result in the frames being a different colour white to the roof spars – and sometimes a different white again from the sills and trims. Those PVCu extruders which manufacture their own PVCu profiles for the many types of window and door frame, conservatory roofs, trims and sills are therefore at a distinct advantage as they can offer a colour match across the full range of products.

Add to that all the different types of insulating glass sealed units that are available – clear and obscure, float, toughened and laminated, different thicknesses of glass and widths of sealed unit – and there are an infinite number of combinations, each being more suited to one application than another. The many different types of decorative glass such as Georgian bar, leaded designs, coloured and bevelled glass add not only to the choice but also to the confusion. The choice widens even further when conservatories are included in the equation as glass roofs can now include anti-sun and self-cleaning glass, and that doesn’t account for the many types, colours and thicknesses of polycarbonate sheets for conservatory roofs.

Safety and Security of PVCu Doors

One of the many reasons for replacing your existing doors is the excellent safety and security features offered by the very latest advanced PVCu door systems. Old wooden doors tend to have poor locking systems and glazing which is fixed into the frame with either putty or an external quadrant bead held in with panel pins. Even the early PVCu frames offered very little in the way of resistance to potential burglars, with poor locking systems, external beads and frames without reinforcement.

For the best in safety and security, the latest PVCu doors should all have: –

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• At least 70 mm frames (the thickness back to front) to add improved stability and strength to the door
• Internal steel or aluminium reinforcement, not only to strengthen the window frame but also to ensure that fittings such as hinges and locks are screwed into the internal metal, not only the PVCu outer frame
• Internally glazed doors (sealed units installed into the frames from inside rather than outside) so that the glass is more difficult to remove from outside, without breaking it
• Multi-point, shoot bolt and hook bolt locking systems to deter or severely delay entry by a burglar
• Doors should be fixed into the house walls with proper screw fixings, not just fixing foam, otherwise the whole frame could simply be cut away from the surrounding brickwork
• Door panels should also be reinforced. Wooden doors often have thin wooden panels which can be kicked in by a burglar and early PVCu doors had PVCu panels with no reinforcement which allowed them to be kicked in, cut through or even burnt through.

PVCu doors - Hook bolt locking mechanismHook bolt locking mechanism on a PVCu door