Hydrounsulation is a kind of construction insulation preventing water from penetrating. It's made of an appropriate hermetic layer consisting of different water-resistant materials.
It's commonly used in constructing together with sound and heating insulation.
It's used in cases where penetrating water could damage the construction and affect the humidity level inside:
Hydroinsulation is also used to prevent an undesirable water outflow from basins like:
It's one of the oldest technologies having been considerably changed in their composition and usage recently. Today just three main types of asphalt water-resistant insulation are used: oxidize asphalts, asphalt modified with APP – atactical polypropylene and asphalts modified with SBS – styrene, butadiene, and styrene. Under the influence of often climatic changes in the Czech Republic and from a long-term experience of working companies the most frequently used are asphalts modified with SBS with protection against UV provided by colorful ceramic or salty gritting on the upper side of the asphalt belt.
Asphalt modified belts keep their elastic characteristics at the temperature of -40° up to +90° so they easier stand heating and mechanical tension they are affected by and in this way perfectly save roof constructions from the outer influence. Asphalt belts with SBS are most commonly used in the Czech Republic for all roof types.