Laying block paving over clay

[Mikecb1]

Yes - all 3 prospective contractors will provide the Marshalls guarantee (for an extra charge). This is 5 years cover for workmanship, 10 years for materials.

[seanandruby]

First off you need to check the sub base crushed concrete and any textile if any to see if it's sound, could be you could lay straight on top of that. A geo grid ground reinforcement mesh would normally go straight on top of inferior sub grade if needed to stabilize.

Is a geo-textile also incorporated somewhere in the sub-base make-up or just the grid.

Membrane is optional, it's not always needed.

[lemoncurd1702]

First off you need to check the sub base crushed concrete and any textile if any to see if it's sound, could be you could lay straight on top of that. A geo grid ground reinforcement mesh would normally go straight on top of inferior sub grade if needed to stabilize.

Is a geo-textile also incorporated somewhere in the sub-base make-up or just the grid.

Membrane is optional, it's not always needed.

Thanks Sean. It's a route I'm thinking of going down, the sub-grade in my area is generally poor.