Do I need a sub base.

Dozy Danum · 28 May 2017

Hi, I'm just about to lay a patio using sandstone flags. The area is 5m x 4m enclosed on three sides and originally it was a 4" thick concrete slab which I have taken up.
What I need to know is, do I need a sub base as the ground is very solid? Also do I need a sharp sand layer?
I will be laying on a 50mm mortar base anyway and it will only be walked on.
Oh, also at the moment it has a weed fabric on it. Can I lay the mortar bed straight onto that?

r896neo · 28 May 2017

Remove the fabric and any lose material. Do not put down any layers of sand.

Either use a compacted sub base or lay the bedding mix straight onto the earth.

Sub base is optional but recommended

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Do I need a sub base.

Dozy Danum

r896neo

DIYnot Local

Similar threads