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Duraflex PVCu Windows and Doors
Flexible, colourful, insulated and strong

Tried and tested products

The Duraflex Diamond suite offers the complete window and door system

Our Duraflex product line mainframes include high performing Q-lon weatherseal as standard, as well as a range of multi-chambered profiles to ensure we can deliver the energy rating performance you require. Furthermore, all our products deliver the required security and accreditation standards to meet todays' ever-demanding specifications

Available in 2 whites, as well as bevelled and featured options, as well as a comprehensive range of foils to ensure we have the product, with performance and aesthetics for todays' consumer

Energy Ratings & U Values

Duraflex product performance

All windows now have to comply with energy ratings. As a result an independent body, BFRC (British Fenestration Rating Council) provide a label system that enable consumers to understand any products energy performance.

The BFRC label clearly indicates the rating of the designated window (A++ to G) depending on the energy efficiency levels achieved by the manufacturer. A++ is the most energy efficient, G the least efficient. The level of energy efficiency is indicated by one of a range of coloured bars – very similar to the energy efficiency labels found on fridges, freezers, washing machines and other household product’s

During the rating process the energy efficiency level is calculated and verified by BFRC, which is totally independent from any manufacturing or installing company. Manufacturers of BFRC rated product and BFRC Authorised Installers are audited to ensure that their energy efficient windows are achieving the stated rating. The BFRC energy ratings allow you to compare varying window products and choose the most suitable for your home.

The Duraflex Diamond Suite delivers the complete window system:

1) 5 Chamber Outerframe The Duraflex Diamond Suite is a 5 Chambered system, offering the ultimate design to maximise strength as well as thermal, acoustic and security performance

2) Q-Lon Weatherseal All Duraflex profile is supplied with Q-lon weatherseal as standard; offering exceptional performance over a wide temperature range. Q-lon delivers improved weathering, acoustic and thermal performance - year-on-year

3) A++, A+, A, B and C Rated energy ratings are achievable in a wide range of glass specifications. - Contact the Duraflex Technical Team for your exact requirements

Secured by Design & Part Q

Duraflex product performance

Secured by Design (SBD) is a Police Approved Initiative that is designed to ensure products achieve a high level of security - as standard, giving both fabricators and homeowners peace of mind

Part Q is a standard that is a requirement for New Build properties, including home extensions that again, ensures products achieve a minimum level of security. The security level is the same as SBD, as both initiatives are tested to PAS24

Our widows and doors have been tested to the stringent requirements of PAS24 enabling, with the appropriate hardware, a high level of security to be achieved, meeting the requirements of SBD (Secured by Design)

What's the difference between Approved Document Q and Secured by Design?

Both standards call for windows and doors to be made to meet the requirements of PAS24. Approved Document Q only requires a test report from a UKAS accredited test house

Casement Windows

The 70mm casement is a comprehensive system available in bevelled and fully featured. Achieving better SAP calculations under the Code for Sustainable Homes initiative, plus BFRC C, B or A rating for enhanced energy efficiency and a BRE expected lifecycle in excess of 35 years, Duraflex has the ability to meet your needs

A full range of ancillaries allows varying product types to be manufactured, including Mock Horn and French casements

Tilt & Turn Windows

The Tilt and Turn range features a dual opening mechanism for security, safety and practicality. By twisting the handle to 90 degrees, the sash tilts inwards to provide gentle ventilation; when turned to 180 degrees the side hinges engage to enable the window to be fully opened for ease of cleaning or fire escape

Security is not compromised either, Tilt and Turn windows can be fitted with a variety of hardware and locking options and also conform to BS 7950 high security status


A wide range of door styles including single Residential, French and Sliding Patio  providing functionality, performance and aesthetics are available in both bevelled and fully featured

To complement our window system a range of single, sidelight, double and stable options can be manufactured in a comprehensive variety of combinations and sizes

All options can be specified inward or outward opening and are available in a variety of coloured profiles to suit most applications including low threshold options for part M compliance

Duraflex Perfect Home Brochure

Download the brochure

Duraflex Perfect Home Brochure


The Duraflex PVCu range of products provide a full solution for any domestic installation with a choice of styles and finishes and plenty of colour

Profile PDF Downloads

Ancillaries PDF Downloads

Literature PDF Downloads

Heronhurst Professional are authorised suppliers and installers of the full Duraflex PVCu range of Windows and Doors throughout Monmouthshire, Torfaen, Powys, South and Mid Glamorgan and Herefordshire