Hi,
My extension will have a suspended timber floor. There is a sleeper wall but it has its own foundation same as normal walls.
the spec for the over site is
150mm hardcore
25mm sand
1200 qauge visqueen
50mm concrete
Seems excessive just so covert he soil and stop vegetation?
I mentioned it to the BC and he said "yeah that's what is needed"
I'll do it, but it seems like a lot of wasted money, can any one fill me in on why this is required?
My extension will have a suspended timber floor. There is a sleeper wall but it has its own foundation same as normal walls.
the spec for the over site is
150mm hardcore
25mm sand
1200 qauge visqueen
50mm concrete
Seems excessive just so covert he soil and stop vegetation?
I mentioned it to the BC and he said "yeah that's what is needed"
I'll do it, but it seems like a lot of wasted money, can any one fill me in on why this is required?