Mold growth on external surfaces POSSIBLE CAUSES Very high percentages not seen by the sun (northern). Stagnant water in contact with the masonry. Wall surface porosity. If the wall color is poor quality matte paint, pores appear which are nests…
Mold growth on external surfaces POSSIBLE CAUSES Very high percentages not seen by the sun (northern). Stagnant water in contact with the masonry. Wall surface porosity. If the wall color is poor quality matte paint, pores appear which are nests…