Lawn Drainage System – Step by Step Installation Guide
If you have a low spot in your yard that is a constant soggy mess, you should consider installing a drainage system. Having a wet yard is not good for the grass and it is not good for your home’s foundation. Until recently, the only really effective drainage system for residential areas was the costly French drain. As a more efficient replacement for the French drain, which is a crushed rock and pipe method, the Multi-Flow Drain requires less back fill and can be installed at significantly less cost. Furthermore, installation of a Multi-Flow drainage system requires only a 4” wide trench, thereby minimizing soil disruption.
Steps for installation
- Digging the trench: You can dig the trench by hand, but using a ditch-witch, or trench digger, is much easier and less time-consuming. You can rent a trench digger from your local home center for approximately £50. The trench should start at the low spot in the yard and follow the gentle slop of the yard down toward the sidewalk/street. The trench only will be approximately 8” deep and 4” wide. Before you start digging the trench, check with your utility company to make sure you don’t have any water, gas or electrical lines running through your yard.
- Digging under the sidewalk: If you have to dig under a sidewalk to get to the street, you can do this by hand, or you can rent a boring tool. You do not have to remove any of the sidewalk to install the drainage system. You should check with your city to make sure you have the proper permits required to dig under a sidewalk. TIP: The sidewalk will most likely crack in the future because of the ground change underneath. So try to dig under the sidewalk in an area where there is already a seam in the concrete. Hopefully, when the sidewalk cracks it will crack in the seam and be less noticeable.
- Drilling through the curb: If you have a curb on your street, you will need to put a small hole through it for the end drain. You can rent a hammer drill with a cement bit to drill this hole. Again, check with the city before you starting drilling holes in the curbs to make sure you do not need a permit. Drill the hole starting on the outside of the curb. You do this because there will be “blow out” when you get through the curb and you want that to be on the inside where it is not going to be seen.
- Laying in the Multi-Flow: This should be very easy. Just drop the multi-Flow into the trench. You can purchase joints and connectors if you need to make turns or have a long run to the street. The Multi-Flow can be purchased in 25′ rolls for under £30 per roll. The Multi-Flow is covered with a black material to keep sand and dirt from clogging the system. If you have to connect several pieces of the system together, simple fold the material over the connector and wrap with plastic (electrical-type) tape. This does not have to be a watertight seal. It only has to keep sand and dirt out of the system.
- Backfill with sand: Backfill the trench with course washed sand and cover with sod.