Posted: Mon Jul 17, 2017 11:10 pm
I will shortly be laying 30m2 of Indian Sandstone Paving Slabs and after reading the PavingExpert website was intending to use the Screed Bedding method to make the job quicker and easier, but have seen several suggestions that it for a DIYer it might not be such a good idea so am not unsure how to proceed.
The slabs are 22mm calibrated Indian Sandstone (900x600, 600x600, 600x290, 290x290)
The base it well prepared and compacted with a constant gradient, the base was screeded level so have a lovely smooth surface to work from with no camber or changes in slope, etc
I also have two 35mm diameter steel tubes available to use as screed rails and a 3m long screed board.
I will probably be hiring a cement mixer.
Will I still be better off keeping to the individual bedding method rather than trying the screed method.
My main concern with the individual bedding method is getting the amount of bedding material correct, as when I tried it 10 years ago with cast concrete slabs I spent an age getting the heights correct either lifting them to add extra bedding material or having too much that I could compress them down enough without risking breaking the slabs.
Could I perhaps use some screed rails to lightly screed (uncompacted) an area large enough for one or two slabs to get a consistant thickness of bedding material.
I assume an SBR mix to the base of each slab would be a good idea if I am careful.
I intend to use a 5:1 or 6:1 sharp sand/cement mix, although unsure if semi-dry or moist would be best.
The slabs are 22mm calibrated Indian Sandstone (900x600, 600x600, 600x290, 290x290)
The base it well prepared and compacted with a constant gradient, the base was screeded level so have a lovely smooth surface to work from with no camber or changes in slope, etc
I also have two 35mm diameter steel tubes available to use as screed rails and a 3m long screed board.
I will probably be hiring a cement mixer.
Will I still be better off keeping to the individual bedding method rather than trying the screed method.
My main concern with the individual bedding method is getting the amount of bedding material correct, as when I tried it 10 years ago with cast concrete slabs I spent an age getting the heights correct either lifting them to add extra bedding material or having too much that I could compress them down enough without risking breaking the slabs.
Could I perhaps use some screed rails to lightly screed (uncompacted) an area large enough for one or two slabs to get a consistant thickness of bedding material.
I assume an SBR mix to the base of each slab would be a good idea if I am careful.
I intend to use a 5:1 or 6:1 sharp sand/cement mix, although unsure if semi-dry or moist would be best.