Removing render from thermalite blocks

Members online


I have recently took on a rendering job using Johnstones silicone render systems, seemed a simple one to do but as I was removing the sand cement render I uncovered thermalite blocks and yes it’s pulling most of the block along with ! So I stopped immediately and let the client know the situation, at that point I didn’t want to remove anymore as it was pulling most of the block away so I suggested going over the top as I couldn’t see another alternative as I already know it’s not recommended to do that !
Does anyone on here have any other alternatives ??
Many thanks