Hi all,
I'm planning to lay an indian sandstone patio soon and have been doing some research.
It appears that the professionals coat the backs of the stones with a slurry primer just before they lay them, which improves the bond with the underlying cement and therefore prevents the pointing from failing.
I've seen this product mentioned:
but this appears to be a cement additive, rather than being applied directly to the back of the stones. If it's an additive, how much should I put in with each mix?
Does anyone know any slurry product that goes directly on the back of the stones?
Thanks in advance
Jever
I'm planning to lay an indian sandstone patio soon and have been doing some research.
It appears that the professionals coat the backs of the stones with a slurry primer just before they lay them, which improves the bond with the underlying cement and therefore prevents the pointing from failing.
I've seen this product mentioned:
Everbuild 503 Premium SBR Bond Bonding Agent
Reduce cracking and shrinking when mortaring with this SBR bonding agent from Everbuild. It’s great for waterproofing outside areas that are liable to be damp, humid or continuously exposed to water or steam. Use it as a bonding agent, primer, sealer and admixture for renderings and floor...
www.toolstation.com
but this appears to be a cement additive, rather than being applied directly to the back of the stones. If it's an additive, how much should I put in with each mix?
Does anyone know any slurry product that goes directly on the back of the stones?
Thanks in advance
Jever