Downspout Drain Line Help, Install, Repair, Clean

The Downspout Drain is the most important drain in the system. Look at how all the drains in the yard, driveway and even from the crawl space attach to this drain.

Drain Tile

The Downspout Drain

Underground drain pipe the leads from the Downspout out to the street or storm drain. This pipe is the most important pipe in your Rainwater Drainage Systems.


The underground pipe could be made of PVC, Polystyrene or in older homes, Terra cotta (clay). Usually the pipe has a 4” inner diameter and attaches to the bottom of the downspout.

When it rains, the roof catches a great deal of water.

Example – A 2000 sq ft roof with collect 1160 gallons of water during a 1 inch rain fall. This a lot of water! The gutters catch the water from the roof and channel it down to the ground through the downspouts. If there is no underground drain to carry the water away from the foundation, the water will end up under your home either in the crawl space or your basement. A home without underground drains from the downspout almost always has Water Problems!

(a quick note – adding a 10 foot section of pipe to the downspout does absolutely Nothing! – Its an eye sore and the water will still end up under your home)

Installing Drain Tile

When we install underground pipe, the 1st thing we do is draw up a diagram of where we want to trench. The next thing we do is call to the underground utilities located. (its the law in most all states). Do not trench without locating the utilities.

Trenching –

We use a trencher to dig our trench. The trencher will dig quickly and neatly and create a trench deep enough to install the drain tile. Yes, we also dig by hand. When digging along side the foundation or landscaping or across a utility, we must dig by hand. That means shovels, picks and the axe sometimes too.

Pipe –

Corrugated Pipe comes in large rolls. This is good because it means there are No Seams for water to leak out.

We like to use Solid PVC #3000 S & D type for downspout drains. Corrugated is also a good choice if its properly installed. Both pipes will carry the water away from the foundation and will last a long time if maintained. See “Cleaning a Drain Tile

Back Fill –

Back Filling and Clean Up

Once the pipe is installed to the proper depth and grade, the hard part begins. That being, covering up (back fill). We try very hard to put things back (dirt, sod, bushes, etc..) so within a couple of weeks, its hard to to tell we were ever there. The best way to accomplish this, is to keep your soil close to the trench as you dig. We usually put all the soil back on the trench and then come back and scope out some excess to be hauled away. Depending on the soil (how wet it is) we sometimes lay out tarps the length of the trench to throw our soil on as we dig. Then when we back fill, the area below the tarps is clean. We also take away some of the soil and spread it along the foundation. This does two things. 1) it helps the yard look much better when it settles, and 2) the excess along the foundation wall will help water to flow away from the home.

Lastly, we rake the area along both sides of the trench. The result is a clean install.

MORE ABOUT FRENCH DRAINS –

Read More…

French Drain, Gutter Drain, Roof Drain, Downspout Drain, Drain Tile, Underground Drain from Gutter, Drain pipe from downspout

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