Inquiry (采购产品): privacy wall I live in Las Vegas and my yard is enclosed by a cement block privacy wall. The grade level on the yard side is about two foot higher than the outside sidewalk level. The outside is painted and the lower part that is below grade level on the inside is crumbling away. It goes up about two blocks high above the sidewalk level. I just counted the blocks and there are 12 blocks exposed on the outside and about 8 1/2 blocks on the inside exposed.I don't know what they call it but it leaches a white residue and the blocks are crumbling away. I have 3 trees in the yard which are watered three times a week in the summer. I suspect the water from this and the occasional rain is causing a chemical reaction causing the problem. Is there any simple way to either stop or slow the process down. Maybe some kind of chemical wash I could use outside or maybe pour along the wall on the inside that would leach down and stop whatever chemical reaction is occuring? Any help would be appreciated greatly. Do you have a product that can stop the crumbling and keep it from happening anymore? **** Hidden Message ***** jerry riley 412 searchlight dr las vegas, NV 89110 USA Company: none E-mail: jade4160@yahoo.com **** Hidden Message ***** jade4160@yahoo.com