What is the mix for laying Indian sandstone?

What mix should I use to lay slabs?

Paving slabs are bedded in a mortar mix with four parts sharp sand to one part cement. Measure your quantities using a shovel or a bucket – for example, four buckets of sand for every one bucket of cement.

Does Indian sandstone need sealing before laying?

But what is the correct answer – and do you actually need to seal your stone? The short answer: No. The long answer: Natural stone has survived for 1000’s of years without any chemical treatments, so it’s unlikely to fall to pieces without a layer of sealant that some suppliers insist it needs.

Can you lay sandstone on a dry bed?

There is much discussion on this subject but the short answer has to be no. Laying sandstone paving should only be done with a full wet bed of Mortar at a ratio of 5.1 sand and cement and the slabs should be primed individually before laying using a slurry primer to aid with adhesion and to prevent salt blooms.

Is sharp sand the same as builders sand?

Also known as ‘grit sand’ or ‘concrete sand’, sharp sand is coarser than builders sand thanks to its larger particles. Having a larger grain size means sharp sand is slightly heavier, giving the mortar more strength yet making it less flexible to work with.

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What is the ratio of mortar mix?

Quick Answer: The most common mortar mixing ratio used is 1 part cement, 4 parts sand.

How long will Indian sandstone last?

Indian sandstone paving can have a very long lifespan if installed and maintained properly. With a cheap installer and poor care you can expect 2 – 10 years from your paving. With a solid base and repointing every few years you can in theory get 30 – 50 years from your paving or perhaps more.

How long should you leave Indian sandstone before sealing?

The stone must be completely dry to be effective and it should not rain for at least 24 hours to allow the impregnator to start curing.

How thick should mortar be for slabs?

The mortar should be damp, not runny. Spread it out and level it with a trowel. The mortar bed needs to be 30-40mm thick and should enable the slabs, when positioned, to sit 6-10mm high.

Can I lay a patio on a dry mix?

I’ve just laid my patio on to a dry mix – works quite well. The ratio can be as low as 1:10 (1 cement, 10 sharp sand), or as high as 1:3, depending on the amount of foot traffic you expect, and what the sub base is like.