French Drain Depth Uk

The width and depth of the drain you dig will depend on the severity of the drainage problem and the digging tool you re using.

French drain depth uk.

Often when installing new drainage sy. Trenching tools will cut wider trenches which is ideal for more severe drainage issues and will cut the digging time in half. That should be more than enough to ensure the drain can handle any moderate amount of rainfall. This low level distribution pipe will have no outfall.

In this french drain tips video i cover some common mistakes made when installing drainage lines for gutter downspouts. When installing a french drain next to a structure the trench must go no lower than the lowest foundations. Note that i said the drain pipe must be sloped rather than the french drain. Recommended depths can range from about 18 inches to 6 feet.

However some situations may require trenches several feet deep and several feet wide. However most standard french drains are approximately 6 wide and 18 to 24 deep. Traditionally the most common are up to 6 inches wide and 12 inches in depth. All of your drain pipe with one exception must slope slightly downhill.

Further information and standard details of french drains with high level overflow pipes can be found in our french drain detail post. When it comes to working out the best size for your french drain there is usually no need to make it larger than around two feet deep and one and a half feet across. There is no hard and fast rule regarding the depth of a french drain. A french drain pipe can help divert water away from your home s foundation patio or low lying areas to help prevent damage or pooling water.

These french drains often also include a lower level perforated pipe to distribute the water along the length of the french drain trench.