The preparatory work is very important when lay paving slabs.
If it is wet where the paving slabs are to be laid you should dig deeper. You can fill with a draining macadam under the layer of base course. If you are careless with the preparatory work there is a risk of the paving slabs (due to ground frost) moving both horizontally and vertically. Chances that they will settle in the right position in the spring are very small.
Length x width = m2
m2 x thickness = m3
m3 x material's weight/m3 = Quantity metric tons material
The volume weight can vary between different delivery points
The size of our material is usually specified in millimeters. This means for example that macadam 11/16 is a crushed rock material where most particles are
between 11 and 16 mm
Macadam 2/5 is a material that neither ants nor weeds like. If you want to be completely on the safe side, you can install geotextile fabric under all stone material to avoid weeds. This fabric can also be used in other places
in the garden where you would like to avoid weeds.
If it is a large area that is to be covered with slabs, it can be advantageous to use machines. It is often worthwhile to hire a small excavator for more extensive excavation work.
You may need to top up the joint sand after a time. Take this into consideration from the outset so you do not have to pay an extra transport charge.