From asbestos roof to photovoltaic roof: the advantages of roof refurbishment with PV
Asbestos is harmful, and yet as a building material it is still part of many old roofs today. Since the roof will have to be renovated sooner or later in any case, it is worthwhile combining the construction work directly with the installation of a roof-mounted PV system. Owners of roofs benefit in three ways from a new roof with photovoltaics: the hazardous material is removed, the new photovoltaic roof system recoups the costs of the renovation and for at least 20 years PV supplies green electricity for the householder’s own energy needs or for feeding into the grid.
For a long time, the use of asbestos was standard practice in the construction industry due to its insulating properties, strength and resistance to heat and acids. However, the use of asbestos has been prohibited by law since 1993, after its negative impact on health and the environment was established.
Roofs with corrugated sheets containing asbestos which were installed before the ban can still be found in industrial and commercial properties. This has consequences for the photovoltaic industry, among others, because according to the hazardous materials ordinance (TRGS 519), the installation of solar systems on asbestos cement roofs is prohibited. If a roof-mounted photovoltaic system is planned the renovation of the roof must therefore be taken into account.
Photovoltaic installations on an asbestos roof do not receive planning permission
Many property owners are attracted to the green energy generated by photovoltaics. However, an asbestos roof will not even obtain an exceptional permit for a PV system. That is why our planners always advise customers to have the building re-roofed. The reason for this is simple: since photovoltaic systems are assumed to have a minimum service life of 20 years, there is a high probability that after some time the roof will show signs of damage anyway, which would then require its renovation. In such a case the expense would be much higher. The solar experts at SENS take charge of the planning and construction of the new photovoltaic roof system. They work together with certified service providers to guarantee the professional dismantling and disposal of the asbestos roof.
Asbestos is giving way to green energy: the advantages of asbestos roof renovation with PV
The investment in a rooftop PV system as part of a roof renovation pays off in a number of ways. The revenues from the installation cover the costs of the renovation. If a PV plant is planned for the future anyway, the cost of scaffolding, cranes etc. will also only be incurred once. The new roof benefits from the protective effect of the modules against bad weather conditions which also ensures longer durability of the roof.
In the case of asbestos roof renovation, communication and planning are handled by SENS. Customers therefore receive everything from a single source and don't need to waste time finding providers, making enquiries and placing orders themselves. Even after the installation, the experts from STEAG Solar Energy Solutions take care of the maintenance and operation of the photovoltaic roof system on request.
No requirement of your own for photovoltaics? Earning money with green energy
Even if you don't have a high energy requirement yourself, photovoltaics on your own roof can be attractive. Renting out an area of roof for a photovoltaic installation is also possible for the owners of asbestos roofs. Renovation is necessary in any case, but the cost of this can then usually be offset by the rent. Depending on the cost of the roof renovation, customers can earn additional money from the rental payments afterwards.
Find out all about the possibilities of asbestos roof renovation in combination with photovoltaics. Our experts at STEAG Solar Energy Solutions will be happy to advise you!
Photos: Sascha Link