Paving slabs on soil

[Jupiter01]

I’ve got some spare paving slabs that I’d like to lay on this space. I would like to use sand and cement to level them with the existing concrete.

I was unsure on how I need to prep this ground so that the slabs don’t sink, etc.

I also have a grinder and can cut the slabs to size.

Thanks in advance.

 

[Wayners]

Id just scrape off 100mm of soil. Gravel to level and sharp sand and cement.

What about an aco drain along?

 

[Jupiter01]

Id just scrape off 100mm of soil. Gravel to level and sharp sand and cement.

What about an aco drain along?

Do I mix the cement and sand as mortar?

 

[Jupiter01]

I’ve dug this up and was wondering whether I can pour some shingle, compact it, pour some MOT and compact and finally use a mortar mix to set the paving slabs.

 

[Cheslea2010]

Shingle doesn't compact, you need 100mm of Type 1 followed by a 50mm mortar bed.

 

[Jupiter01]

Shingle doesn't compact, you need 100mm of Type 1 followed by a 50mm mortar bed.

Approximately how many bags of Type 1 do I need? Also how many bags of sand and cement.
Thanks again

 

[Odds]

You can set them up on an aluminum subframe if you're feeling flush. Provides good drainage.

 

[Cheslea2010]

Approximately how many bags of Type 1 do I need? Also how many bags of sand and cement.
Thanks again

How many square metres is the area?

 

[Jupiter01]

How many square metres is the area?

Around 2.8sqm

 

[Cheslea2010]

500kg of Type 1 will give 100mm sub-base. 200kg of Sharp Sand and 3-4 bags of cement should give a good strong mix at 50mm depth.

 

[Jupiter01]

Having a rethink on this. I’ve got 8 bags of sand and 3 cement. Can I mix these or add some ballast to fill this space in instead?

 

[Hobobanobo]

I have a similar issue, Concrete slab path around house and then need to pack soil further out with Type 1 to match height of the concrete before mortar and flags.
However my issue is that the concrete slab appears to have sunk about 20/30mm looking at the mark on the house wall. If I flag over that and onto the new type 1 bed. will it cause the slabs to crack over time if it sinks further.

I have about 22 square meters.
whats the coverage for 100mm of type 1 by weight?
I may need to get it delivered loose and put the old back to work

As for drainage by the wall, Do you need to chuck a bit of mortar behind it or just it it loose? I assume it just sits on the type 1 at the correct depth.