Urgent advice please - base for sandstone

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
Post Reply
jonnypb
Posts: 6
Joined: Fri Jul 18, 2008 2:13 pm
Location: home

Post: # 30104Post jonnypb

We've just got a new conservatory and we're getting a new patio laid in indian sandstone (30m2) next to it in the next day or two. The intention was to take up the old concrete and then put the sub-base etc down.

The builders have had a look and the concrete is in 3 big solid slabs about 4-5 inches thick and they seem very solid. There is a crack in one of them but again it still seems solid and there is no movement in them at all.

They were going to take it up but it will be a big job and have suggested that they could just lay on top of the concrete which would save us money on all the sub-base and time as well.

My questions are

1) Is it OK to lay on top of the existing concrete or would it be best to take it up?

2) If it is ok to lay on top of the concrete will they just need to lay it on a dry sand and cement mix or something else?

They have said they will take it up if I want so it's not just them being lazy, they're just giving me an option

If need be I can post some pics tonight

Thanks
Top
Tony McC
Site Admin
Posts: 8346
Joined: Mon Jul 05, 2004 7:27 pm
Location: Warrington, People's Republic of South Lancashire
Contact:
Contact Tony McC

Post: # 30109Post Tony McC

Ever heard of a FAQ? Look 'em up on the main website!
Site Agent - Pavingexpert
Top
jonnypb
Posts: 6
Joined: Fri Jul 18, 2008 2:13 pm
Location: home

Post: # 30111Post jonnypb

I've read that and it relates to laying on top of an existing patio flags. These would be laid on top of existing patio flags it would be on top of 3 large solid concrete slabs approx 4-5 inches thick
Top
jonnypb
Posts: 6
Joined: Fri Jul 18, 2008 2:13 pm
Location: home

Post: # 30113Post jonnypb

just had a look and it would be too close to the DPC so it's coming up!

thanks
Top
Mikey_C
Posts: 952
Joined: Mon Oct 30, 2006 8:24 pm
Location: Bournemouth, Dorset

Post: # 30119Post Mikey_C

if you want to save on time and money it would pay to rent, a micro crusher to create a suitable sub-base material from the broken out concrete. Saves wheelbarrowing spoil from the back to the front of the house, paying to dispose and wheelbarrowing subbase that you have paid for back round.
Top
Dave_L
Site Admin
Posts: 4732
Joined: Fri Jul 28, 2006 8:47 pm
Location: Somerset
Contact:
Contact Dave_L

Post: # 30121Post Dave_L

All depends upon access to the working area, I guess!
RW Gale Ltd - Civils & Surfacing Contractors based in Somerset

See what we get up to Our Facebook page
Top
jonnypb
Posts: 6
Joined: Fri Jul 18, 2008 2:13 pm
Location: home

Post: # 30124Post jonnypb

Dave_L wrote:All depends upon access to the working area, I guess!
there's good access to thee working area

we've got a couple of quotes for doing the full job which i'm happy with and we've already got 2 huge skips in our front garden!

thanks
Top
Post Reply

Return to “Flags and Slabs”