Just lifted my tiles off floor in back reception. Underneath the concrete is very soft and crumbly and you can press your fingers right in.
spoke to a builder and he in forms me i have two options i can either take all concrete out and reconcrete installing a dpm.
or
I can leave the concrete and tiles down and just put k11 sovereign damp proof system on top.
any advice
spoke to a builder and he in forms me i have two options i can either take all concrete out and reconcrete installing a dpm.
or
I can leave the concrete and tiles down and just put k11 sovereign damp proof system on top.
any advice