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  Solar Roofing - converts sunlight to useful heat

Solex solar roofing is an alternative to conventional roofing materials when constructing a roof. It provides an output of solar heated water, which may be used for hot water, space heating, pool heating or any other water heating application.

There are numerous benefits to incorporating solar heating technology in a roofing material, including:


• Aesthetically pleasing roofs with clean lines
• Low m2 cost compared to traditional solar panels
• Conventional building material costs offset2

• Provides for large solar collecting areas with large CO2 savings

Our solar roofing materials are compatible with conventional natural and manufactured roofing materials. They may be installed:

• To the extremities of a roof, or
• As a strip or patch surrounded by other roofing materials

The solar roofing consists of transparent roof tiles or slates made of toughened glass or unbreakable polycarbonate. This transparent layer overlies the solar absorbers, which are laid on the roof structure. The roof structure itself is completely conventional, and the solar roofing imposes no increased load on the building. It also takes up no additional space on the roof, or in the loft-space.

Design
The roof to be covered should face between SE and SW, with south facing being ideal. The optimum pitch is between 30o and 50o for year round performance. For domestic systems, an area of 8m2 is adequate for providing 70-80% of the annual hot water requirement of an average household. Areas of 15-20m2 upwards will make a significant contribution to both water heating and central heating costs. Pool heating and industrial heating are other applications for our roofing systems.
The visual effect of the finished roof is a uniform medium to light grey, a combination of the reflection from the surface and the black colour of the absorber panels which lie beneath. Planning authorities have welcomed these roofs as a more aesthetically pleasing alternative to solar panels.
Operation
The sun shines through the transparent roof covering onto the solar absorber panels, which become hot. The heat is conducted to the pipe which runs along the back of the panels, which contains a water/antifreeze mixture. The fluid is circulated in a closed circuit through the panels by a solar pump and controller unit which transfers the heat through pipes to the hot water cylinder or heating system where it is required.

The absorbers are backed with heat resistant foam insulation, which has the advantages of keeping the panels hot, whilst also insulating the roof space.
Installation Skills
A plumber should carry out the installation of the solar absorbers, as well as installing the pump/controller unit and the pipe work.

A roofer should carry out the installation of the solar roof tiles. We have comprehensive installation guides, which enable trades-people with little previous knowledge of solar heating to install these systems.


Products

Solex Energy produces several solar roofing products to suit different applications and roof styles:


SOLAR SLATES >
These are glass double lap solar slates, which are directly compatible with traditional 500 and 600mm high (20” and 24”) size slates. They are installed onto a normal felted and battened roof structure, as a patch within natural slates or across the whole roof.
NU-LOK SLATES >
These are glass single lap slates which use a unique metal battening system. The glass slates are compatible with Nu-Lok ceramic and natural slates, and also with Nu-lok PV slates. This system has a low labour requirement, and is ideal where the remainder of the roof is also roofed with the Nu-lok system.
SOLAR TILES >
These polycarbonate single lap tiles are compatible with Marley Modern/Redland Mini-stonewold concrete tiles. They are ideal for fitting into an existing concrete tiled roof.


SOLAR CLADDING >
This is a lightweight solar cladding system for use over existing profile metal roofing. Ideal for industrial applications, it utilises existing roof insulation for low imposed weight, low cost, high output heating systems.

   
 

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