A quick question, bought some builders sand to make mortar to lay paving slabs. I have read after that I should use sharp sand to make my mortar. I intend to put about 75 mm of MOT Type 1 as a base, compacting it with a compactor plate. Then placing the slabs on a mortar bed 4:1 sand cement. Do I need sharp sand for this or would the building sand that I have bought be good enough. The slabs are going to be a base for an inflatable hot tub. Would appreciate help/ tips on this. Thanks.
base for Paving slabs
- Thread starter KJJ12345
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Sharp sand for laying slabs (generally 5&1 mix, altho maybe 4&1 in your case considering the weight of the water in the hot tub), the grains are jagged and interlock forming a solid layer, especially when laying it thick for a patio. Building sand has smooth grains, tends to crack at depth, and is less solid.
You can use your building sand to make the mortar for pointing the slabs (3&1 damp mix). If you have loads and you want to avoid waste, you might get away with laying your slabs on a 3:1:1 sharp/building/cement mix.
You can use your building sand to make the mortar for pointing the slabs (3&1 damp mix). If you have loads and you want to avoid waste, you might get away with laying your slabs on a 3:1:1 sharp/building/cement mix.
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