SurfaPore Thermodry is a paint additive that blocks thermal transfer and protects against moisture making paints water repelling! It protects against water condensation resisting mould growth on walls.
After mixing with water based acrylic paints it can be applied on external and internal wall surfaces
"ThermoDry makes paint water repelling: The nanoparticles contained protect paints from moisture extending their lifetime and increase their thermal insulating ability." (Product Data Sheet pg. 2)