Sandstone wall stone, always moldy, washed back and back up, there is no way to completely remove the?
The sandstone is loose and porous, easy to water, multiple lesions, mildew, long moss, cleaned with cleaning agent after that brush a is oily stone protective agent inhibited the situation, can use sandstone protective agent SINO1500 organic fluorine. Brush protective agent, put the stone clean, fully dry (let out of the volatile stone internal moisture), brushing with a brush arranged in a crisscross pattern protective agent, or watering can spray.
After the natural placement of 24 hours, do not contact with water and other stains, through the protection of the stone to form a stable water repellent layer, effective protection of stone.
Sandstone generally contains iron, black may be the result of oxidation. Sino307 can be used to try, is specialized in cleaning black spots. Clean the recommended brush layer protection Oh, to prevent recurrence of similar situations.
