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Roofing Specialists

Renewables

Green Roofing

Most people will be familiar with the concept of green roofs, also known as living roofs. They have enjoyed a huge surge in popularity over recent years due to the wide range of benefits they provide. These include:

  • Reduced rainwater run off
  • Enhanced roof insulation properties
  • Attractive visual appearance
  • Reduction in urban heat island effect
  • Enhances roof lifespan by protecting underlying waterproofing system
  • Provides green spaces in urban areas
  • Encourages biodiversity

Brown Roofing offers a range of supply and fix green and sustainable roofing solutions to cater for various client requirements.

Green roofing provides an ecologically sound and practical finish to many roofs, with sustainability, thermal properties and aesthetics all playing a major role in the specification and construction of new and refurbishment projects. Another major part of sustainable roofing is the use of Photovoltaic cells and solar panels, both of which can be supplied and fitted by Brown Roofing.


Photovoltaic systems (Solar Panels)

There has never been a more pertinent time to consider adding solar systems to your project. With energy payback schemes currently at a high price and with the cost of the technology coming down, the benefits are clear to see.

But what are photovoltaics? The word comes from “photo” meaning light and “voltaic” meaning energy produced by a chemical reaction. Photovoltaic technology refers to the conversion of light into energy at the atomic level. Certain materials, such as silicon, cadmium, and selenium, have the ability to absorb light photons and release electrons. Solar photovoltaic technology harnesses these freed electrons and uses their electric current as DC electricity (NASA 2002).

Fully powered by the sun, solar photovoltaics are a free, clean, and renewable source of energy that can be used independently of or in conjunction with conventional grid energy. Unlike solar thermal systems, solar energy panels require little maintenance, necessitate no moving parts, and carry manufacturers guarantees.


How do they work?

Solar electricity generates electricity from daylight. When two different conductor materials touch, and light shines on them, a potential difference is created. This is known as a voltage, and is what creates the current which flows along a wire and causes the transmittance of electromagnetic energy. The more light that shines on the panel each year, the more electricity it produces.

An inverter converts the electricity from DC to AC for use in the home. When the solar electricity system is producing more power than is needed within the home it is exported to the grid and you receive money from your electricity company. At night, when the solar system is not producing any electricity, or at a time when more electricity is required within the home than is being produced by the solar system, electricity is imported from the grid in the normal way.


How much electricity will solar panels produce?

This is dependent on a number of factors, especially the total size of the solar panels installed, the type and quality of panels used, the orientation of the solar panels , the angle of the solar panels, and whether the proposed location for the solar panels is subject to any shading from surrounding objects.

According to the Energy Saving Trust, the average 3-bedroom house uses 3,300 units or kilowatt hours (kWh) of electricity per year although this is an average and will vary from property to property. Each kWp (kilowatt peak) of solar electricity produces between 800 and 1,200 kWh per year depending on the factors listed above. Therefore, to produce all of the electricity required for an average household, the PV array would need to be around 3-4 kWp. However, it is not essential to provide all of your homes electricity needs from a solar electricity system as you will still be connected to the national grid.

Brown Roofing has provided domestic and commercial solar photovoltaic systems to a range buildings and homes. We offer a range of solar options.

  • Integrated
  • In Roof
  • On Roof
  • Flat Roof

Benefits

  • Lower Fuel Bills
  • Reduction in Carbon Foot Print
  • Exporting Unused energy back to the grid
  • Feed in tariff which provides a guaranteed tax free income which indexed linked for 20 years

Please choose your roofing solution