![]() Because the exterior pump will need to serve a larger surface area than most basements, a professional contractor may opt to dig inlet lines and catch basins that will feed into the sump pit from different points around the landscape.įrom there, most sump pits have lines that drain into the street gutters, but check your local municipality to confirm permissibility. They can also protect your foundation by redirecting water away from the house. They work the same as they do inside your home to drain standing water from outdoor entertaining spaces and lawns. Sump pumps can even be installed to resolve exterior drainage issues. How Do You Install an Exterior Sump Pump? Rather than pouring concrete, it’s recommended that pea gravel be added up to the lip of the basin for proper drainage. The process for installing the basin and discharge system are the same, until it comes to finishing the hole for the basin. When placing the basin, consider easy access, and as with the basement install, a proper drainage plan, and a ready power source. The earth inside your crawl space may not be even, and below-grade water may create pools of standing water in low spots. Installing a sump pump in a crawl space requires slightly different preparation and materials. How Do You Install a Crawl Space Sump Pump? This secondary power system can come in handy during inclement weather, and the battery should be replaced every two years. The simplest sump pumps are plugged into an outlet, but there are other models that come with backup batteries that run the pump even during a power outage. Installing Crawl Space Sump Pumps and Exterior Sump Pits If you ever need to replace the pump, this can be done by simply switching off the power to the unit, disconnecting the old model from the discharge valve, reconnecting and leveling a new pump, and testing it the same as you did upon the initial installation. After powering up your pump, test it by filling the basin with water.Fill in around the basin to the top with concrete and smooth it off with a pointed trowel.To finish the installation, fill in the crevice around the sump basin with new concrete, mixed in a trough with a hoe.Before installing a sump pump, check with your town to see which drainage options are permissible. Some homeowners may be tempted to simply run a drain line from their sump pump into a municipal storm drain, however most locales won’t allow this. If the grading of the land is insufficient for proper drainage, either invest in regrading the yard or in an even longer downspout to ensure water is fully carried away. The PVC pipe should extend outdoors, and empty through a downspout. When drilling a hole for the pipe in the house wall, use a hole saw and seal the area around the pipe with a paintable caulk. While the arrangement of this pipe will vary from home to home, its universal function is to carry water up and out of the house. A one-way check valve will need to be connected to a PVC pipe to run up the wall and out of the basement.This will keep gravel out of the pump and provide a firm platform for it. Then, after the basin is placed inside the hole, put several layers of gravel inside it, then lay a stone paver on top of the gravel.This will prevent silt from clogging the pump motor. Before setting the basin in the hole, wrap its exterior base with filter fabric.Next, use a demolition hammer to chop through the concrete floor and dig a hole deep enough to set the sump basin inside it, flush with the floor.(When choosing a place to install the pump, factor in a proper drainage plan and a proximity to a ready power source.) The process begins with setting the sump basin upside down on the basement floor and marking its outline.
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