Posted: Mon Jul 21, 2008 1:48 pm
Hello,
I am building a shed base for a 6' x 8' shed which I am going to buy to replace a 5' x 8' precast concrete shed which I have just demolished. There is a concrete base left from the old shed, which I am extending by 1' at one side.
Problem is, the existing base has quite a cross-fall to it and I want the base for new shed to be level. I have cast 1' wide of concrete flush with the 'high side' of the existing base and now want to level it off.
Question is, how thinly can I lay 20mm aggregate concrete on top? I am planning to extend the shutter that I have already used on the 'high side' and shutter the 'low side' so it is level without causing s feather edge, but how thin can it be at the high end?.
I know I could do this with paving slabs on a mortar bed but I already have plenty sand, cement and gravel (20mm). Obviously I don't want to mix any more concrete than I need to.
Hope this can be understood, any advice greatly appreciated.
Thanks
I am building a shed base for a 6' x 8' shed which I am going to buy to replace a 5' x 8' precast concrete shed which I have just demolished. There is a concrete base left from the old shed, which I am extending by 1' at one side.
Problem is, the existing base has quite a cross-fall to it and I want the base for new shed to be level. I have cast 1' wide of concrete flush with the 'high side' of the existing base and now want to level it off.
Question is, how thinly can I lay 20mm aggregate concrete on top? I am planning to extend the shutter that I have already used on the 'high side' and shutter the 'low side' so it is level without causing s feather edge, but how thin can it be at the high end?.
I know I could do this with paving slabs on a mortar bed but I already have plenty sand, cement and gravel (20mm). Obviously I don't want to mix any more concrete than I need to.
Hope this can be understood, any advice greatly appreciated.
Thanks