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Tips For Adding A Sump Pump To Your Saturated Crawl Space

Posted on Oct 18, 2016 by in Uncategorized |

If you have a dirt crawl space underneath your home that is constantly saturated with water, then you should start to think about waterproofing methods that can reduce the amount of standing water that sits under your house. Adding drainage tile to the exterior of your house and making sure that gutter downspouts are angled away from your foundation are a few things you can do. You also should add a sump pump to your crawl space if standing water is an issue. Keep reading to learn about some tips to help you with the sump pump installation.

Install A Liner

Sump pumps placed in basement areas are typically slipped into large holes in the concrete. These holes are called sumps and they collect all the water from the basement so it can be removed by the pump. Your dirt crawl space does not have a concrete formation that can be drilled. While this can make it easier to add a hole with a shovel, the hole will fill in with mud. To prevent this, you must add a sump pit liner to the opening.

Sump pit liners are made from polyethylene, polyethylene foam, or fiberglass, and perforated varieties are a good option to allow water to flow through the dirt and into the pit. Polyethylene pits are a good choice for residential use because they are lightweight, durable, and easy to install. Most liners are a little less than two feet deep and this should meet your crawl space waterproofing needs. You do not want your liner to be too deep or the dirt and mud will place too much pressure on the liner and this may cause it to collapse. 

Purchase the liner before you start to dig the pit in the crawl space. You should do this when the dirt is relatively dry. October and November are relatively dry months throughout the United States, so dig the pit in the fall. The pit should be secured in the lowest area of the crawl space. Think about where you see the largest puddle form in the space or where the dirt seems to be saturated with water first when water gets into the crawl space. This will be the area where the sump pit should go.

When you are ready to set your sump liner in the ground, make sure the top lip of the polyethylene pit sits about one-half to one inch above the ground. Spread some gravel around the lip to keep the liner from sinking into the earth when the ground becomes wet.

Purchase The Right Sump Pump

Once you have the pit ready, you will need to place the pump in the pit. However, you will need to purchase the right type of device for the crawl space. While basement water is relatively clean when it enters a sump pit, this is not likely for water that flows through a crawl space. The water is typically quite dirty and it will pick up small silt and clay particles as it runs through the holes of the sump liner. The dirt and debris can clog up the impeller device that is attached to a traditional submersible sump pump.

To reduce clogging issues, you will need to purchase a dirty water submersible sump pump for the pit. These pumps come in submersible varieties like traditional pumps. They also will have impellers that help to shoot water out of the outlet pipe. However, the impeller is much more powerful and spins the dirt and debris around quickly with the water. The dirt then shoots out of the outlet with the waste water instead of collecting inside the pump and clogging the mechanisms. Sometimes, dirty water sump pumps are called trash pumps or sludge pumps, so look for these types of names when purchasing the device that you need. For more info, try visiting a site like