Catholic University Leuven

Within the department of civil engineering in the laboratory for building physics of the Catholic University of Leuven, tests were conducted that addressed heat and cold resistance and air resistance of the tiles. The report shows that the tiles provide extra heat resistance of approximately 63% to 67% on an already well-insulated roof. It is also proven that the cold resistance increases approximately 8% to 11%. It is therefore evident that for poorly or moderately insulated roofs these resistance percentages should be much higher.

Our own tests

We are currently awaiting certification, however Planet Safe Ltd. has conducted viewings and trials of its own and we have subjected Roofclix® to our own testing using the kinds of conditions the relevant bodies apply during the certification process. The Roofclix® system is an addition to the roof, in other words it is placed on top of a new or existing roof. As a result, existing roofs can be adjusted quickly to new requirements and/or EPN standards. The goals that the government set for itself might play a role in this in the near future, and it has not been ruled out that subsidies may become available to achieve these goals.

Pressure test

We have pressure tested the tiles with the largest unsupported surface; in other words, with minimum support on the corners. Pressure was applied to the middle point of the long sides of the element using a cross shaped stamp where the points of pressure were 10 cm inside, measured from the outer edge. The surface of the cross-shaped stamp used was equal to 2 times 20 x 6 cm. The plate above, that applied the pressure, was 48 x 48 cm. This way the pressure was exerted to enable calculation of a uniform load. The pressure was increased until the tiles gave in. The basic tiles (1 kg) gave in at a pressure of approximately 300 kg. The heavy tiles (2,5 kg) gave in at a pressure of approximately 350 kg. The resistance against point load (pressure per cm²) is of course much lower, since it concerns a plastic tile. For this test we placed a small metal cylinder with a diameter of 1.5 cm in the exact centre of the tiles using the same factors as for the test for uniform load. The basic tiles gave in at a pressure of approximately 100 kg and the heavy tiles at a pressure of approximately150 kg. We advise strongly against placing objects with a small surface load directly on the Roofclix® tiles.

Moisture absorption and wind load

By submerging the basic tiles in water for a longer period of time we were able to measure moisture absorption. The basic tiles were weighed and then submerged completely in water. Over a period of 4 months the tiles were weighed on a weekly basis. Subsequently, an increase of weight of only 3% was observed. The tiles were also placed in a freezer for a period of two weeks in order to imitate the conditions of severe frost. The tiles showed no visible damage. Next, the tiles were glued to roofing material to test the pulling force of the filling. The pulling force was still excellent.

Third party tests

Hogeschool Utrecht: University of Applied Sciences

At the University of Utrecht a test of “Duurzame Scholen” (Sustainable Schools) called “Het Ultieme Leslokaal” (The Ultimate Classroom) was conducted. In this trial, a combination

Saxion University

We also have a relationship with Saxion University, who want to subject our system to all possible practical sustainability studies. of various products and techniques are being tested in order to create the best indoor climate for students with the aim of significantly improving the health and study performance of the students. Planet Safe Ltd. participates in the “Sustainable School” foundation because it has determined that Roofclix® offers a concrete contribution to the improvement of indoor environment.