To protect your home from moisture, you will want to install an exterior drain tile. This will preserve the foundation from moisture that can contribute to the foundation wall deteriorating. Rather than the water pooling near the foundation, it has somewhere else to drain. Exterior drain tiles are much easier to install than interior drain tiles, so if you have a finished basement that does not have an interior drain tile and you are concerned with flooding, this is a good option for your home. Exterior drain tiles are not able to be easily modified. For this reason, you will need to make sure that your exterior drain tile is installed properly in the first place.
Dig the Trench
To lay down the drain tile, you will need to dig a trench next to your home. Dig the trench in such a way that creates a slope toward the outlet.
Place the Drain
The drain should be placed alongside the foundation footer rather than on top of it. Doing so allows for you to lower the water table by at last six inches. The trench will need to travel to a nearby outlet.
Use a Stake and String to Measure the Slope
Pound stakes into the ground at east side of the trench. Then, stretch a string that attaches to both stakes and mark the point where the line is level. You can write this on the stake nearest to the outlet. You can determine how much you will need to make the trench drop by measuring the distance between each stake and multiplying this amount by 1 percent. This will determine how low the lower part of the trench must be.
Line the Trench
The trench needs to be lined with landscape cloth that covers the bottom and a portion of the sides of the trenches. Then, place a tile at the very bottom of the trench and make sure that the tile is placed in the center.
Measure the Slope Again
Since it is so important to make sure that the drainpipe slopes, use a level to measure the extent of the slope. You may need to add or remove soil to correct the slope. Once the drainpipe is finished you will need to cover it with coarse gravel or rock. Then, fill the rest of the trench with gravel to hold the drainpipe in place. You can also use the soil that was originally removed when digging the trench. For more information, visit http://www.rite-waywaterproofing.com.