Mineral painting is the most microporous coating of all. Unlike organic coating which forms
a film on surface, mineral painting has no film characteristics so it won't flake off. Bound
by chemical reaction to the mineral support it is applied on, they both form a homogeneous
and extremely lasting set whose life is 2 or 3 times longer than classic painting.
(Only a thinning down with a special fixative mineral binder can guarantee the coating
longevity, with no risk of "flouring" in the long run while colours won't fade away).
Mineral painting does not require any sanding because it can be applied
onto sticking old organic support as long as a coat of specific bottom was applied.
However sanding is compulsory for supports with waterproof coatings.
Mineral painting is over 90 % permeable. Thus supports keep their "breathing out"
characteristic and draining off humidity.