The slabs can be laid on sharp sand doug although we prefer to mix it with cement at a 6 1 ratio.
Can concrete be laid over paving slabs.
To save time and money many states and municipalities use a road repair technique known as whitetopping the process of pouring concrete over asphalt rather than removing the existing asphalt.
Laying a patio on existing concrete.
With rigid bound bedding mortar or concrete it is highly unlikely that the old bed will perfectly accommodate the new paving so it should be removed prior to laying new.
But the fact that resin bound surfacing is a thin section screed 12 to 18mm and can be laid on existing surfaces concrete tarmac paving etc is actually one if it s main strengths.
It can permanently cover a multitude of sins and look great.
There may be a temptation to lay a new bed directly over the old but this too is not always a sound plan.
When they are placed over a granular sub base as shown on the gravels construction page the gravels can bed in to the sub base surface and so become lightly bound and unlikely to roll or move on a hard surface there is no opportunity to bed in the material just sits on top of the surface.
Lay the field pavers over concrete as you would on any paver patio.
Prime the back of the flags with a cement based primer 3.
Create the mortar mix add a 30mm layer 4.
Scrape away the excess sand and cut off the excess landscape fabric with a utility knife.
Cracked concrete patchwork slab in your garden.
Existing tired tarmac driveway.
Laying pavers over a concrete patio may work fine since it will experience little stress but a driveway constructed in this way may not be able to stand the stresses of vehicles.
It should be laid fairly dry with the rule of thumb being that you canb squeeze a ball in your hand and it should stay in one lump but no water should come out.
Glue down the last border patio blocks.
There is nothing to bind these loose materials.
Let the glue dry for a few hours before you tamp the field pavers and sweep sand across the patio to fill the joints.
Prepare your concrete 2.
Lay the paving slabs leaving 8 to10mm spaces between them 5.