Backfilling the space behind the blocks with crushed stone and then installing a flexible perforated drainpipe available at the home depot also called drain tile at the base of the wall.
French drain behind wood retaining wall.
This loose rock is probably more than other companies would use but we would rather allow more water to flow behind the wall and out than not have enough.
Ask question asked 2 years 9 months ago.
Fabric keeps rock and soil separate.
Drainage problems in your yard can lead to pooling mold or water damage in or around your home.
French drain below or above retaining wall.
You want to use a perforated 4 plastic pipe below.
The stone is just deteriorating.
Why proper drainage is important for retaining wall performance.
However retaining walls are built with a certain capacity in mind.
Otherwise water moving down the hill will build up behind the wall and undermine it.
The pipe should rest on the same compacted gravel base or concrete footing that supports the wall.
If you re building a retaining wall on a hillside.
Let me show you what happens after 19 years.
Drain pipes go behind the wall on the side with the surcharge the soil that that wall or foundation is holding back.
We go about 6 8 deep behind the wall with loose rock usually crushed granite and up to the second row from the top.
If you re building a retaining wall add a french drain behind the first course of stones or blocks.
A retaining wall is built to hold back a certain amount of soil.
Luckily you can avoid these problems by installing a french drain.
They are also always lower than the footing of a foundation or wall or stair system.
The proper drainage behind a natural stone wall is extremely important.
A french drain is a trench filled with a perforated pipe and gravel that allows water to drain naturally from your yard.
Why you need a french drain behind your retaining wall.
We re pulling all this out.
Use fabric behind the wall.