| An
innovative lightweight and low-profile photovoltaic system
for new and refurbished flat roofs that is capable of
generating electricity in lower levels of light than rigid
cell systems has been launched by leading building membranes
specialist Icopal. |
 |
| The
development of flexible thin film PV laminates enables
Icopal’s roofing systems to harness en-ergy from unutilised
roof space - up to 50Kw per annum from one square metre of
the IcoSun sys-tem (based on UK average conditions) – and
maximise the Government’s new feed-in tariffs* in a discreet
and secure method. |
|
The IcoSun system from Icopal’s
Eco-Activ range comprises photovoltaic laminates (PVL) that
weight less than 5kg/m² that are bonded directly to the
waterproofing membrane without the need for supporting
framework that would lead to imposed roof loading and water
ingress through penetrations. |
|
The modules’ flexible laminate
technology enable them to follow the shape of the roof, even
barrel roofs and pitched roofs up to 40º, while their
multi-layer cell design allows them to work more efficiently
at lower light levels without the need for them to be
orientated towards the sub. They are also less affected by
fluctuations in temperature than rigid cell systems. |
|
The Icopal waterproofing
membrane that is installed first comprises a polyolefine and
bitumen compound (POCB) with a complex, dimensionally-stable
polyester/glass reinforcement, providing high mechanical
resistance and stability. |
|
The smooth upper surface of this
allows for optimum bonding of the PVL modules, with systems
supplied as a single layer or two-layered built-up as
required by the waterproofing requirements. |
|
The PVL module, which has a
self-adhesive underside, is bonded to the waterproofing
membrane as a secondary operation, negating the need for the
contractor to work over the top of the PVL modules and
therefore minimising the risk of damage. |
|
As well as offering a 20-year
warranty on power output at 80%, Icopal can advise
specifiers on the design of the system to eliminate ponding
water, maximise the modules’ self-cleaning properties, avoid
shaded areas caused by nearby buildings or trees, chimneys,
upstands and so on, and the return on investment based on
the usable roof space. |
|
The IcoSun system includes
accessories such as base channels, raceways, mastic, primer
and glue. Two runs of 0.4m wide IcoSun will fit per width of
1m wide IcoSun waterproofing. |
|
* Feed-in tariffs (FITs) are
payment made by the licensed electricity suppliers to the
generators of electricity from such sources as IcoSun, to
incentivise small-scale, low-carbon electricity genera-tion
by householders, communities and businesses. |
|
For further information on
Icopal Ltd see
www.roofinfo.co.uk/icopal |
