Here at Co-Operative Contractors LTD, we follow a strict installation procedure with block paving. To get the biggest benefit from block paving, it has to be laid on a dependable and strong base foundation.
Another important procedure is the cutting of the block paving and ensuring the border is set in concrete. Without ensuring proper cutting and bordering, it can lead to block paving shifting out of there pattern and becoming loose otherwise.
Here is a breakdown of the way Co-Operative Contractors LTD installs block paving
- Firstly, we will excavate a base foundation. Even if there is already a base in place, it is very important there are no weak spots in the base and that it is at least semi permeable. Being permeable ensures some of the water can drain naturally down through the block paving.
- Once its been excavated, we will apply a new base foundation of 804 stone (approved quality standard) to the driveway or patio. Generally we recommend 4 inches minimum depending on the original foundation it might be more.
- At this stage, we will always insert our drainage for the block paving if it is required. This includes any land drainage systems or channel drains.
- Recessed manhole covers are used to replace old manhole covers at this stage ensuring the finished height will match with the new surface.
- Edging kerbs or block paving kerbs are now set into the area in concrete ensuring the level is set accurately.
- Now your new foundation is ready for compaction. On smaller areas Co-Operative Contractors LTD will use a whacker place but on open areas or larger driveways, we will use a sit in machine roller for extra compaction.
- At this stage, we will apply our base of sand for laying the block paving. This will be set off a string line and leveled accurately to ensure the block paving will have an even finish and secondly, to ensure the surface water can be directed to where it needs to go.
- Once the sand has been leveled, we will pull a string line to lay off our block paving. Depending on the pattern, it can vary between herringbone, stretchered or offset. You can read more about block paving patterns here.
- The border should already by applied at this stage and set in a concrete bed to ensure its rigid and solid. The block paving will need to be cut into the border which Essex does using diamond blade.
- The reason for diamond blade is simply it cuts the block paving better. It gives a clean and crisp cut ensuring no unsightly and jagged edges on the block paving.
- Once its been cut in, Co-Operative Contractors LTD will apply the kiln dried sand (silver sand) to the block paving, brushing it in to joint the block paving.
- Block paving comes with a slight spacer built into the sides of it. This ensures enough space to joint it which in turn when it gets compacted will lock the block paving in place. Hence the old term of interlocking paving!
- We vibrate compact the block paving by machine, sometimes using a rubber mat if its delicate paving, going side to side first then up and down second. This ensures it is all locked together correctly.
- At this stage, the block paving joints will be topped up again with more kiln dried sand and all excess sand removed.
If you would like to know more about the block paving services that Co-Operative Contractors LTD provides, you can call us on 0800 696 5034 or head over to block paving services to see more examples.