where all the products involved are pre-manufactured under closely controlled factory conditions, thus improving the speed and flexibility of installation. For both wet lay and component-based systems, a correctly installed GRP roof should have a service life of at least 30 years.

ENVIRONMENTAL BENEFITS As GRP is safe to use in greywater systems and does not release any chemicals once installed, it is a favoured material for eco- friendly housing, both ‘green’ and ‘blue’ roof waterproofing. At the end of its long service life,

GRP can also be broken down into its component elements, which can then be recycled into new materials, saving the customer money while benefitting the environment. A major benefit of GRP when used as

GRP IN ‘FLAT’ ROOFING There are two main types of system where GRP is specifically used as a ‘flat’ roofing membrane. One of the most commonly used systems is ‘wet-lay’, where the roof

substrate is effectively used as a mould for an in-situ lamination in a similar manner to boat building. The proven alternative to ‘wet lay’

is a component-based membrane system Comar 7P.i FSDX – British by Design T

he next generation of aluminium bi-fold, folding sliding door has arrived from Comar Architectural Aluminium Systems.

COMAR FSDX: Superior, stabilised rolling action with the quietest roller in the industry and improved weight bearing capacity means fit-once and reduced call outs. The new outer-frame is one profile and is used for the track and jambs which reduces stock holding. It is a mitre frame construction with 2 crimping options: pinned cleats for creating pre-assem- bled outer frames that can be shipped to site or mechanical cleats which means the outer- frame can be shipped to assemble on site – a key consideration when larger door sets are to be installed.

COMAR FSDX EXTRA ROLLER The stainless steel dual roller seamlessly integrates with the stainless steel running track, with a stabiliser the wheels always remain in contact with the track, which, means that even if the track is slightly mis-aligned due to building tolerances the smooth rolling action is not hindered. The weight bearing capacity is increased to 120Kg which with the FSDX’s glazing pocket of 62mm triple glazed or acoustic glass can easily be incorporated.

COMAR FSDX EXTRA - TRACK Superior thermal performance with integrated stainless-steel rail means that low U-values and continued performance are guaranteed. The intelligent design of the profile means the same profile is used for the jambs and the head, providing mitre frame construction and two options for site transport – preassembled or stick using pinned crimped cleats or mechanical cleats.

COMAR FSDX EXTRA - GLAZING The view out of the FSDX door offers the homeowner that little bit eXtra. With the slimmest sightlines available of 60mm, the doors maximise daylighting into the home. Maximising glazing without lacking perform-


a roof waterproofing membrane is the additional ability for the material to be refurbished in-situ towards the end of its service life, doing away with the financial and environmental costs associated with re-roofing.

Andy Fell is national sales manager of Dryseal at Hambleside Danelaw

ance the maximum width of the doors has been increased allowing door sets to be over 4M with only three doors.

COMAR FSDX EXTRA - HINGES The new hinge design incorporates a central gasket strip, which actively reduces hinge gasket prep and site installation. Even the roller pillar has been treated with consideration and pre-applied foam pads seal the roller to the door. This increases home-owner satisfaction with a draft-free solution and no call backs for the installer. Adequate sealing between the sliding doors ensures that a long-term solution is guaranteed. For further information, please email 020 8685 9685

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