Containing white microspheres and other additives it gives to the mix made with 10 10 CFS a thixotropic texture, if applied on vertical surfaces it doesn’t sag. Ultralight filler, its structure can be compared to the squid pen as it is very light, resistent, unalterable and ideal to make beams. A mm3 of Micro Filler Powders contains from 5000 to 15000 not communicating cells that create a perfect isolation from water and humidity.Color: White % of additive by volume depending on the thickness: 70% about