111sofija 2025-11-03 02:03:12#2Chisel out joints to solid mortar, grout with cement sand. Injections are only worthwhile for slightly porous walls. For old porous concrete blocks, it brings little. First ensure stability, then consider barriers/injections. Best regards!
Chisel out joints to solid mortar, grout with cement sand. Injections are only worthwhile for slightly porous walls. For old porous concrete blocks, it brings little. First ensure stability, then consider barriers/injections. Best regards!