When can you use a dry mix of concrete and sand. I am building a patio and have a hard core base. Can I put a dry mix of sand and cement on it, allow it to harden and then put slabs on it?
You need a wet mortar mixture of mainly building sand mixed with cement. You can add a shovel or 2 of sharp sand into a mixer. Have the mixture wet to apply the slab to stick to it while you tap them down with a rubber hammer and to the right levels.
Also don't dot/dab or five spot the wet mix I would recommend full cement beds. Do the outside then add a bit in the middle
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!