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Mortar is used between bricks, cinder blocks, or stone to bind them and fill any gaps. It is made from sand, a binding agent (cement or lime), and water.

21 votes

What actually happens if I vary proportions of cement and sand in mortar?

It is Sand-vs-Sand forces that give the mortar it's strength, so I would be reluctant to reduce the sand quantity in the mix. … Workability: This is the ease of pouring, shaping, smoothing of the mortar. Obviously you want a mortar to be somewhat stiffer than a concrete, as concrete is poured, and mortar is spread. …
Chris Cudmore's user avatar
1 vote

What mortar should be used for flagstone?

First of all, a caveat: We only use this dry grouting method with freshly buttered joints, where find that there is sufficient moisture from the 'proper' mortar to initiate setting of the dry mix. …
Chris Cudmore's user avatar
0 votes

What is the best choice for patching and leveling concrete before tile install?

I think you can get away with thinset here. In the big one, you may want to patch one day, and lay the tile the next, giving the filler thinset time to harden. I'd also try to layout the tile in suc …
Chris Cudmore's user avatar