The common cause of this problematic condition is caused from extreme weathered climatic conditions and generally appear after many years of constant abuse. But occasionally some conditions can appear in a short period of time. If the brick layer has applied his mortar bed during extreme hot weather cycles and has not allowed the cement to set within its timeframe this can cause the mortar to become brittle and erode in several years. Therefore, wetting down the bricks is a must. Secondly, if the cement used is not in accordance with the manufacturer’s recommendations, then this serious condition will also affect the mortar. Chester Plaster can assist you in providing expert advice and are highly capable of re-coating the entire wall surface to give it the protection it needs.