The sleek Joule Vissolis In-Roof solar system is designed and manufactured to work in Northern European climates. The collector’s black finish makes it an attractive addition to any roof. T
The Joule Vissolis In-Roof solar systems have been tested up to four times the requirements of EN12975: 1-2. The high efficiency collectors are further tested to determine their maximum impact force resistance levels and the maximum positive and negative loading force that the collectors can resist.