Posted: Wed Jul 20, 2011 11:40 am
This is a brilliant site, but after checking past posts I still feel need of some advice about pointing my recently relaid patio – in a nutshell, what pointing to use with chamfered 38mm slabs which butt at the bottom and leave 7-10mm joint at the top?
I just looked at eg the Aspects Easyjoint video and it states very clearly that there should be at least a 3mm gap between the bottom of the stones, if they are chamfered……….. I have no real gap.
Fuller story is that we have 15 sq metres of 450 x 450 ‘riven’ concrete slabs that I first relaid 25 years ago when we moved into the house. I didn’t mortar the joints and they had become uneven – ants and weeds at work – so I recently relaid them again. We did look at getting a new patio but my wife thought about the carbon footprint and I thought about the cost!
The substrate is just well-packed clay soil with an inch or so of sharp sand. I don’t have use of my legs, so didn’t feel up to digging it out and putting in hardcore. But I want to stop the ants and weeds this time and had thought to use a polymeric like Romex or Rompox.
(I should say that thanks largely to info on this site, I have put in some very nice Marshall’s 50 mm sandstone steps down to the patio – but these on a 6 inch concrete base…… and they also await pointing.)
I just looked at eg the Aspects Easyjoint video and it states very clearly that there should be at least a 3mm gap between the bottom of the stones, if they are chamfered……….. I have no real gap.
Fuller story is that we have 15 sq metres of 450 x 450 ‘riven’ concrete slabs that I first relaid 25 years ago when we moved into the house. I didn’t mortar the joints and they had become uneven – ants and weeds at work – so I recently relaid them again. We did look at getting a new patio but my wife thought about the carbon footprint and I thought about the cost!
The substrate is just well-packed clay soil with an inch or so of sharp sand. I don’t have use of my legs, so didn’t feel up to digging it out and putting in hardcore. But I want to stop the ants and weeds this time and had thought to use a polymeric like Romex or Rompox.
(I should say that thanks largely to info on this site, I have put in some very nice Marshall’s 50 mm sandstone steps down to the patio – but these on a 6 inch concrete base…… and they also await pointing.)