Do you need to seal patio slabs?

Question

Just had new Indian sandstone slabs laid and the contractor mentioned sealing them but didn't explain why. Does it need redoing every year?

Billy · Answer

I've only ever sealed a driveway or patio after pressure washing the area

Aaron · Answer

If sealing the slabs, it gives it a protection and enhancement. Not required every year but helps maintain the integrity in the slabs.

Arron · Answer

Indian sandstone is a naturally porous stone. Whether you need to seal it is a matter of personal preference, but it is highly recommended. Sealing is not strictly necessary for the stone to survive, but it drastically reduces maintenance by preventing stains, discouraging algae growth, and protecting the stone's color.

Jake · Answer

Yes you can seal them to prevent them getting stained and make them easier to clean off.

Chris · Answer

I would never seal Sandstone as it often produces salt. Efflorescence is a reaction between sands cement and even the stone. It is a natural reaction that doesn’t always happen. Regularly had it happen when repointing patios. 
If you seal the paving you seal the salt in which doesn’t look great. So seal ot at your own risk.

Do you need to seal patio slabs?

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