Excellent primer not only for insulating but also as a substrate for other uses. It is quite dense and spreads difficultly, but it creates impregnation and leaves a thin glossy crust to welcome the next material. It requires dilution of 10-30% with water, according to the manufacturer's instructions; someone commented that it is epoxy and does not need water, which is not true. It can also be applied as a moisture sealant in non-exposed areas with a density of 600 grams per square meter, but as a primer for Hyperdesmo it requires a density of 150 g/m², meaning for 100 m² you will need 15 kg. It is very important not to get wet until the insulation is applied on top. The maximum time it can remain without the insulation being applied is 24 to 48 hours depending on the external temperature. Aquadur is used for surfaces that could not be cleaned well and have some imperfections; however, if you have a surface clean from mold and previous insulating materials, then it is better to use microsealer 50, which is equally good and spreads more easily.