Evening!
I have just had the outside of my old sandstone house repointed with a lime mortar. When we bought the house 4 years ago the surveyor highlighted the erosion being caused to the stone by the weather and this led in part to the need for repointing after the sandstone around the cement pointing washed away leaving it exposed and fragile.
I have been using a breathable bnrick and stone sealant, intially brushed on and then topped up every 12-18 months in the areas where it was particularly exposed to moving water (e.g. where it is splashed from the nearby road).
So, to seal or not to seal and with what?
I have just had the outside of my old sandstone house repointed with a lime mortar. When we bought the house 4 years ago the surveyor highlighted the erosion being caused to the stone by the weather and this led in part to the need for repointing after the sandstone around the cement pointing washed away leaving it exposed and fragile.
I have been using a breathable bnrick and stone sealant, intially brushed on and then topped up every 12-18 months in the areas where it was particularly exposed to moving water (e.g. where it is splashed from the nearby road).
So, to seal or not to seal and with what?
