We handle our driveway paving work in a deliberate and meticulous method. This means that every one of our driveways are done in a professional and industry approved manner. Here we breakdown an approximate process we use when approaching a driveway paving project in St. Albans and Middlesex.
EXISTING SURFACE REMOVAL
This would involve using a digger and removing the surface and digging into the base foundation. This is important as you want to make sure the older foundation is strong and it will allow you to install a new sub-base to a minimum depth of 150mm.
If the driveway is to be changed in shape, this is when we would normally do it. This allows us to base everything up and have a rough level set to it.
If drainage is required and there is no soakpit, we would normally have installed one by now to drain surface water away from the completed drive or patio.
When the new sub-base is installed which is normally type 1 MOT, this is either compacted using a wacker plate or on bigger areas, we prefer using a vibrator roller which compacts to an even stronger level.
At this stage we would add our edging for the paving which normally is a paving block turned into a header. This is bedded into a concrete base and set to a precise string level for water flow.
SHEETING AND SAND
Membrane sheeting (geo-textile) is laid over the driveway and river washed sand is spread over the membrane. The sand is compacted using a wacker plate.
We set our screed bars to the same level that the edging was set to and would begin screeding the river washed sand so its set to an accurate and even level.
Paving is installed on top of the screeded sand, which is normally laid in a 45 or 90 degree herringbone pattern. The pattern is recommended on driveways as it locks the paving together. We cut any open edges of the driveway using a block paving splitter or diamond saw and brush in kiln dried sand into the joints. We compact the finished driveway firstly going vertically and then horizontally to ensure an even compaction.
Finished driveway is brushed once again to top up the kiln dried sand and all excess materials are removed from site.