The Masterdor Composite Thermal Door

The flexibility, options and skills to deliver your perfect door-set.


In addition to ancillary products such as sidelights and fanlights, Masterdor Ltd manufactures a wide range of bespoke external domestic door-set products, all of which are delivered fully finished and ready to install.

We are adept at finding solutions to particular door problems and offer a wide range of options for the disabled. Prices can vary with the relative styles (we offer up to 94 styles of some products) and specification chosen.

Importantly, our Masterdor’s and Suredor Permaskin doors are designed to offer true proportions even after sizing.

Frame and threshold options

A narrow frame option is also available for use with the Suredor GRP where it is important to maximise the available brickwork opening to achieve the widest possible clear opening without needing to cut back the brickwork (e.g. for wheelchair access). Both 25mm standard and 15mm wheelchair Part M compliant thresholds are available.

The Masterdor Composite Thermal Door

The Masterdor Thermal Composite is an amalgam of materials to provide a 54mm door set that combines the best qualities of the different alternatives on the market: a combination that creates a door set
that meets and exceeds the requirements of today’s social landlords. It is a timber door with a foam inner core that is faced in GRP and then ‘wrapped’ in ASA thermoplastic film.