I've re-laid a section of my patio with new 450 x 450 x 32 riven slabs and am now waiting for the base cement to set for 24-48 hours.
When I come to grout between the slabs, I have a depth of around 20mm by 10mm width to fill, (some of the base cement has squeezed up between the slabs). Can I fill the bottom half with a 10mm depth of kiln dried sand and then grout the top 10mm with a sand & cement mix, or should it be a full depth sand & cement mix?
(Reason being, I'm getting a bit low on cement and don't want to buy another bag if I'm only going to use about 1/4 of it. The rest would probably go to waste).
When I come to grout between the slabs, I have a depth of around 20mm by 10mm width to fill, (some of the base cement has squeezed up between the slabs). Can I fill the bottom half with a 10mm depth of kiln dried sand and then grout the top 10mm with a sand & cement mix, or should it be a full depth sand & cement mix?
(Reason being, I'm getting a bit low on cement and don't want to buy another bag if I'm only going to use about 1/4 of it. The rest would probably go to waste).