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Driveways & Paving

22mm thick patio slabs - mortar or concrete?

Anonymous user 23/02/2024 - 3.32 PM

Hi, I'm going to be laying patio in the next few weeks and the slabs were getting are 22mm thick. A person we'd asked to help said we wouldn't be able to lay 22mm on just mortar and it would have to be concrete. The patio is just for light footfall, not cars and will be in the back garden. The plan was to lay it on a 100mm sub base of MOT 1 and then 50 mm of mortar.

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4 Answers

Golden Driveways LTD

Rating: 4.9 out of 5
Wood Green, London
Hi, if you lay it on a 100mm sub base of MOT 1 and then 50 mm of mortar will be fine because is it on the back garden and is not a driveway so doesn't need concrete base.
Answered2 June 2020
9

Anonymous user

There is absolutely no problem with your initial plan i don't know who told you otherwise but it sounds like they have no clue, a patio should only ever be for foot traffic and certainly not vehicles! Concrete is a massive overkill and I have never heard of it being done like that ever... Hope this helps all the best!
Answered2 June 2020
4

Drivescape

Rating: 5 out of 5
Birmingham
Always on a wet bed of concreting sand and cement bed , not mortar that's for laying bricks , the back of your slabs will need a primer slurry first so they adhere to the concrete , measure twice cut once.
Answered3 June 2020
1

Gb brickwork and extentions

Rating: 5 out of 5
Walton On Thames
If you lay a100mm sub-base compact it and bed the slabs on mortar that would be fine dont need for concrete
Answered3 June 2020
0