I would appreciate some advice on this one. I think I have read every google article on this and the advice is contradictory.
These are pictures of part of my back garden wall which is soft sandstone, spalling or de-laminating badly and previously damaged with cement mortar. There are deep indentations and some of the stone surface is extremely soft (some OK). I tried one patch with Hansons cement mortar and PVA ...this used a lot of product (as I am small scale and purchase bags and do small mixes) and really this does not look the answer (and I am not sure I am doing the right thing either
Can I ask what others do with this? Is there an optimal way? I am tempted to pull out all the cement (which is likely to cause a bit of damage) and just "point" it but I will be left with a soft spalling surface in places.
Thanks for any advice.
These are pictures of part of my back garden wall which is soft sandstone, spalling or de-laminating badly and previously damaged with cement mortar. There are deep indentations and some of the stone surface is extremely soft (some OK). I tried one patch with Hansons cement mortar and PVA ...this used a lot of product (as I am small scale and purchase bags and do small mixes) and really this does not look the answer (and I am not sure I am doing the right thing either
Can I ask what others do with this? Is there an optimal way? I am tempted to pull out all the cement (which is likely to cause a bit of damage) and just "point" it but I will be left with a soft spalling surface in places.
Thanks for any advice.