How petWALK avoids dangerous mold

Conventional pet flaps are mounted from a building physics perspective on the wrong side of the building. The reduced surface temperature on the inside and the associated condensation cause great danger of mold formation. petWALK doors - just like good windows - are located in the insulation level of the building and thus avoid a shift of the dew point. Due to the very good insulation they offer also on cold days sufficiently high surface temperature on the inside and therefore avoid condensation. These facts effectively prevent mold growth.