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Cembrit Hits the Heights with its FC Ridges

Stocking and fitting the correct ridges for fibre cement roofs is simple with Cembrit’s comprehensive range. Available immediately, the ridges are lighter in weight and easy to cut and fix, qualities which make them superior to the commonly used mortar bedded, concrete or clay alternatives. An additional benefit for stockists is the lower weight per linear metre ratio, equaling smaller footprint, which makes Cembrit ridges easier to store and a more cost effective stock item then substitute products.

Cembrit fibre cement ridges are lighter in weight, do not require electric power for cutting and dust suppression and are easy to install. Being dry fixed with easily available “sela” type screws, installation is not dependent on getting the correct mortar mix, nor having to wait for dry weather. This means the roof will comply with the latest editions BS 5534, BS 8000-6 and chapter 7.2 of the NHBC recommendations.

Ged Ferris, Marketing Manager at Cembrit explains: “Accessories should not be an after-thought, they are an integral component of the roof, contributing to its functionality Increasing demands for energy efficiency, through improved levels of insulation, means ventilation at roof level becomes more crucial. Particularly with tight fitting roof coverings like fibre cement slates, it is necessary to remove moisture carrying warm air from voids in the roof space. The most efficient solution will incorporate inlets at the eaves with outlets along the length of the apex.”

Cembrit has developed a continuously ventilated ridge, to cope with typical roof pitches as well as helping the roof design comply with the latest version of BS 5250. For tricky ventilation problems, where there is no clear airpath from eaves to ridge, Cembrit has developed low-profile vents for use on the roof slope. These are unobtrusive and can also be used as terminals.

Cembrit’s emphasis on customer service extends to rapid availability. Accessories, together with slates are available at five locations around the UK. Customers can get advice on the design, installation and fixing of the fibre cement range either on the telephone from one of the depots, or in print from Cembrit’s recently launched 80 page Guide to Double Lap Slating with Fibre Cement Slates.

Manufactured from the same raw materials and pigments as their fibre cement slates, Cembrit ridges are the perfect complement to a Cembrit fibre cement roof. The products match the slate colour, with no unsightly protrusions or changes of angle, contributing to the sleek effect that can be achieved with Cembrit fibre cement slate roofs. Cembrit can also provide a range of unobtrusive In-line slate vents and slate and ridge fixings specifically designed to meet the most demanding aesthetic requirements.

For more information, and to download the fibre cement slate guide, visit www.cembrit.co.uk

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Cembrit provides architects with BBA Certified slates

The importance of BBA (British Board of Agrément) certification is well-known as an independent mark of approval for suppliers to the construction industry, and Cembrit has the distinction of having its complete range of fibre cement fully accredited by the organisation.

The BBA is the UK’s major authority offering approval and certification services to manufacturers and installers supplying the construction industry. BBA certification is a sought after accreditation, and one which is incredibly important to architects. Cembrit holds five BBA Certificates for its fibre cement slate range, ensuring that whichever system is chosen, architects can be confident in the specified product. To achieve this status, Cembrit fibre cement slates completed a comprehensive testing process and successfully met all the requirements set out by the BBA.

“BBA certification enables architects to specify Cembrit fibre cement slates with confidence,” says Ged Ferris, Marketing Manager of Cembrit. “Our fibre cement slates range provides a high quality roofing finish that is both attractive and long lasting. Architects specify the slates for use on both residential and commercial properties, and have in the past, praised the product for delivering the desired results.”

The Cembrit range of fibre cement slates includes Westerland, Moorland, Zeeland, Jutland and Diamond, all offering their own unique appearance. The slates are ideal for use on conventional pitched timber roofs with a rafter pitch of 20° and over, or hung vertically as cladding on external walls. The slates are complemented by matching fibre cement ridges, ventilation solutions and fixings.

Manufactured to the highest European standards using Portland cement together with a formulation of superior blended synthetic and cellulose fibres, Cembrit fibre cement slates are finished with a high quality, semi-matt acrylic coloured coating to the face and edges and a tinted, high performance binder to the back face. Cembrit fibre cement slates are the most accredited on the UK market.

For further information visit www.cembrit.co.uk, or email sales@cembrit.co.uk

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Render it right

Insulated external walls are an effective way to prevent energy loss from all types of properties. Ged Ferris, Marketing Manager at Cembrit discusses the incorporation of render-backer board, as a substrate in such constructions.

There are an ever increasing number of ‘green’ solutions becoming available to help cut wasted energy and in the process help the environment. The government driven schemes; the Renewable Heat Incentive and the much-talked about Green Deal, are concerned with improvements that homeowners can make with cutting edge energy saving technologies as well more conventional projects such as improving insulation. In fact, as many contractors recognise, significant heat loss from a building is through outside walls. There is of course cavity wall insulation available, but where that is not possible or desirable – a commercial building for example – external wall insulation can provide the same benefits.

Reduced costs

A typical installation of external wall insulation can cut heating costs by as much as 40%, with the additional benefits to the owner of a reduced risk of condensation and resultant decay of the building fabric. The education market has already taken up this trend and as cuts in education spending start to bite, this type of construction is likely to prove a popular choice for establishments looking for a modern and energy efficient upgrade.

External walls incorporating insulation are constructed as double skin, with the insulation shielding the internal layer and an air gap with a decorative outer skin providing the weather protection and aesthetic effect. Taste dictates that not everyone desires the same finish and there is a multitude of suitable materials, colours and textures available. Although a rendered finish is usually associated with block or masonry, the use of a good render backer gives additional scope for a coarse, textured or smooth finish that can be either painted, pigmented or left natural. The monolithic finish will of course eliminate joint shadowing, which can be an issue to some.

To achieve a desirable monolithic finish that will not only satisfy the design brief but also perform well in the long run, it is important to use a good substrate. A stable render backer will help achieve a better uniform exterior finish. Secure fixing and seamless joints are important preliminary steps that eliminate the potential for cracking.

Installation

Installing a render backer is a simple process but for maximum advantage it is a real bonus if the board is lightweight. This helps with manoeuvrability on-site and during the actual fixing process. A case in point is Cembrit’s PB board which incorporates polystyrene beads in its construction. This reduces the density of the board and also makes cutting easier. There is no requirement for mechanical cutting equipment, all cutting can be done with conventional hand tools. This also helps with safety eliminating the risk of nuisance dust.

The installer typically has to be aware of fixing too close to corners / edges as this can damage the boards. A recent development to solve this problem is a board with reinforced edges. In order that fixings can be completely covered with render, the edges are also chamfered meaning the fixing head is below the surface of the façade. Designed to fit neatly together to maximize stability at the butt joints, further reducing the risk of the render cracking along the joints, each of the boards characteristics reduces the risk of the render cracking along the joints or spalling above the fixing, which looks unsightly.

An alternative to rendered finish is brick slip or stone cladding. Such finishes require a strong and stable substrate onto which they are adhered. The best quality render boards can also fulfil this function. Truly versatile boards now coming onto the market will make a huge contribution to the energy efficiency and appearance of buildings for many years to come.

With an increase in demand for lightweight external cladding systems, contractors need to be up to date on the installation of render-backer boards. If specified, and installed correctly, a monolithic finish that is thermally efficient and a pleasing to the eye can be achieved with the minimum of fuss.

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Cembrit Slating expertise now available in print

Cembrit has developed a Fibre Cement Slates guide to provide specifiers, craftsmen and trades people with the relevant information for the successful design and installation of pitched roofing with the ever popular fibre cement slates.

The book demonstrates how all forms of slating and fibre cement technology offers users peace of mind not available from other suppliers and highlights the wide range of slates and accessories the company offers. The 80-page document, entitled ‘A Guide to Double Lap Slating with Fibre Cement Slates’ provides a full explanation on technical specification, design considerations, colour availability and installation advice.

“Cembrit has been manufacturing fibre cement products for over 80 years” explains Ged Ferris, Marketing Manager of Cembrit. “The content of the brochure draws on that depth of experience to offer detailed advice to anyone wanting to specify and install fibre cement slates. Fibre cement man-made slates continue to grow in popularity due not only to the cost and installation benefits but also aesthetic advantages over concrete tiles. Our aim is to support this move by providing a useful document that covers the key aspects of fibre cement specification.

The Cembrit range of fibre cement slates has grown over the years and now includes Westerland, Moorland, Zeeland, Jutland and Diamond, all offering their own unique appearance. The slates are complemented by matching ridge, ventilation and fixings. Manufactured to the highest European standards using Portland cement together with a formulation of superior blended synthetic and cellulose fibres, Cembrit fibre cement slates are finished with a high quality, semi-matt acrylic coloured coating to the face and edges and a tinted, high performance binder to the back face. Cembrit fibre cement slates are the most accredited on the UK market.

To download the brochures and to find out information on all other Cembrit products, visit www.cembrit.co.uk

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