There are many reasons why you may want or need added drainage into your garden. Having artificial grass installed alone will improve the drainage if the base is crafted correctly. Standard soil and turf will typically hold more water in wet conditions, particularly if the soil is comprised of Clay. Artificial grass should be laid on a compact sand and stone sub base, this both tends to drain quicker as well as retain less water than soil. Even a standard artificial grass installation should improve the drainage in your garden.
However, some gardens need even more if their drainage is particularly bad. Some areas may received more surface runoff, for example if they are next to a concrete or paved area. Or if the area is in a natural depression or on a slope that received water from higher areas. the soil type can also play a factor with clay soils draining much slower than other soil types. We have a few ways (listed below) that we can craft under your drainage to further help your bad drainage in your garden.
Commonly, new build homes have issues with their gardens due to the builders not leaving the gardens in good condition and leaving behind a lot of building debris and clay in the garden. This leaves a lot of issues for the new home owner, but at Cheshire Artificial Grass we have dealt with this many times and are certain we can help. Enquire about getting artificial grass in your garden today, and inform us that your drainage is bad so that we are able to best advise and craft the perfect garden space for you. With no excess standing water or flooding.
One of the more simple solutions for some areas is to simply dig a trench or pit in a particularly wet area. This would usually be filled with a fine rounded gravel that is often called pea gravel or pea shingle. The gravel should be rounded rather than angular, so that it does not compact like the sub base above and leaves void spaces that the water can fall and be stored in. The idea is that it creates an area for water to drop lower into the subsurface, keeping it away from the surface. For example, if there’s an area at the bottom of a sloped area that water collects, you can dig a trench along the base of the slope, fill it with gravel and then cover over with the standard sand and stone base for an Artificial Grass Installation.
The most common drainage solution that we carry out is a herringbone drainage system. This consists of digging a series channels in a fork that goes through the whole garden, or the area that requires it. These are filled with a drainage pipe perforated with holes for the water to enter and flow through. The pipe is then surrounded by pea gravel. This gives the water somewhere to drop down to and the pipe helps to move the water out of the area. These can sometimes just be piped into a large sump and the low point of the area to get the water flowing into a pit.
For enclosed areas or areas that have a hard base like concrete or paving, we can fit an Aco surround to the artificial grass area or garden (along with a herringbone if needed). With this we can also add a slight unnoticeable slope towards the drain to help the water flow into it. The Aco drain will then channel the water out of the garden eliminating flooding and standing water. This is often a good addition to new build gardens which tend to have a patio across the front of the house which can have an aco drain installed either along the house or between the patio and artificial grass.
For areas that need some extra drainage, we will general look to connect a herringbone system to an existing drain network. This ensures that the water has somewhere to flow to. We can do the same thing to manholes that are in the garden if they have connecting junctions. The pipe network is connected to an existing junction for the existing drainage network to pipe the water into the subsurface and then away into the drainage network underground.
When creating a herringbone drain system, you should create a catch pit. This would typically be underneath the drainage junction if you are connecting to one. The catch pit will always be the lowest point of the drainage system with the connecting pipe network being progressively higher as you go further away from it. The catch pit is a low point that acts as a pit for the sediment in the water to settle out. A vertical pipe capped with a small manhole lid acts as an access point so that the sediment can be emptied and prevents it silting up and blocking over time.
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