The Brew Cabin

Posted: **Mon Apr 09, 2018 12:25 pm**

Hello I need some advice please.
My builder is using 20mm gravel for sub base (no compression) and plans to pour concrete over it before placing a bedding for porcelain tiles and block paving.
Is that sufficient sub base?

Many thanks in advance

Posted: **Mon Apr 09, 2018 10:36 pm**

no!

minimum subbase is 100m compressed type 1

LLL

Posted: **Mon Apr 09, 2018 10:36 pm**

no!

minimum subbase is 100m compressed type 1

LLL

Posted: **Tue Apr 10, 2018 9:06 am**

No damp proof membrane either!

And no disrespect to "builders", many of whom are fine tradespeople, but why are you using a generalist to lay a very demanding and particular form of paving? This really is a job for someone experienced in laying porcelain, a paving specialist - it's damned expensive stuff so you want it right first time, and what you describe is NOT right!

The Brew Cabin

Sub base for porcelain and block paving - Gravel and concrete on top sufficient?