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Gardening & Landscaping

Laying stone paving over small concrete patio/path at back & over old paving slab at front of house

Anonymous user 28/02/2024 - 3.22 PM

Hello I have a question regarding Laying stone paving over small concrete patio/path at back of my house and over old paving slab at front of house. The back is section is a small run of concrete that runs approx a meter wide from the house to the grass garden. The section at the front is old large paving slab that is between house and front wall. I was wondering if these can be slabbed over with new paving slab. If so what other things would i need other than the slab. Would it be best to lay on some sand/cement mortar mix? Thank you in advance Luke

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12 Answers

Birchwood Property and Landscape Services

Rating: 5 out of 5
Alfreton
it will be fine to lay the slabs over the original concrete as long as you have 150mm between the path and the dpc height which is your internal floor height. you are best laying these on a 50mm concrete screed so that it is all keyed together.
Answered23 August 2016
7

Holmes & Gardens

Rating: 4.9 out of 5
Southam
To add to the other answers I would also check the concrete surface/paving you are going to lay over as essentially this is your base. As long as your existing surface is stable its all good to go. Lay your new paving with a strong wet concrete mix (sharp sand) and keep it two brick courses below the damp course and running away from the property.
Answered22 December 2016
4

Anonymous user

Yes it is OK to lay slabs over the existing concrete as long as the finished hight is 50mm below the damp course. You only need to make sure that all rain water will run to a drainage system or away from property draining in to the garden because the finished patio area will not allow water to drain through once completed
Answered1 November 2016
2

Eternity landscapes

Rating: 4.6 out of 5
Romford
As long as the base is solid with no major cracks it will be fine
Answered29 January 2020
1

Anonymous user

it will be fine to lay the slabs over the original concrete as long as you have 150mm between the path and the dpc height which is your internal floor height. you are best laying this on screed sand and cement 50mm.
Answered26 January 2021
1

Anonymous user

If you have sufficient gap between dpc and path to be laid between 150-180mm i always like to stay then you should have no issues make sure its laid on a full bed and not just dot and dab seen this fail way to many times over the years hopefully with help from everyone on here you have managed to excute the job in a correct way and got a great outcome 😀
Answered7 December 2021
1

Anonymous user

it will be fine to lay the slabs over the original concrete
Answered4 March 2022
1

Anonymous user

As long as the concrete is in decent shape it should be fine
Answered16 August 2022
0

S6 Designs

Rating: 5 out of 5
Benfleet
As long as the concrete hasn’t cracked or sunk, if it was a good thickness then it’s more than suitable to lay onto with a up to 50mm sand and cement bed.
Answered23 August 2023
0

Sound Ground Solutions

Rating: 5 out of 5
Rugby
If the concrete has shown no sign of cracking or sinking then I would say it's suitable to lay new paving on a 50mm full mortar bed Hope this helps Thanks
Answered4 January 2024
0

B and B Groundwork’s LTD

No reviews yet

Tottenham, London
As long as the concrete is in good condition and put 50mm bed it we’ll be fine
Answered13 February 2024
0

Anonymous user

Yes is the answer, you can install new slabs on top of the existing concrete as long as there is no sign of subsidence. And to keep the finished height 150mm below the dpc and laid on a full bed of cement, Kind regards
Answered13 March 2024
0