How to build a garden retaining wall

What is the easiest retaining wall to build?

While retaining walls of this type are relatively inexpensive, they can be difficult to repair or remove. For the average do-it-yourselfer, building a retaining wall is easiest when using masonry blocks that will be stacked no taller than three feet, with no mortar binding the stones or concrete members.

How do I build a small retaining wall?

Build the Retaining Wall

  1. Step 1: Prepare the First Row. …
  2. Step 2: Level the First Block. …
  3. Step 3: Lay the First Row. …
  4. Step 4: Adjust for Level. …
  5. Step 5: Prepare for the Second Row. …
  6. Step 6: Cut a Block to Start the Second Row. …
  7. Step 7: Begin Laying the Second Row. …
  8. Step 8: Add Landscape Fabric.

Do I need drainage behind retaining wall?

Drainage. Third, since most retaining walls are impervious, which means water cannot pass through the wall itself, efficient drainage is crucial. When drainage goes unaddressed hydrostatic pressure will build up behind the wall and cause damage such as bulging or cracking.

What can I use instead of a retaining wall?

An alternative to retaining walls are typically metal mesh gabion baskets filled with stones. These present different options for introducing creative elements to your garden and landscaping. Garden walls with stone embankment – plantable. This is a great combination of design and functionality.

What slope requires a retaining wall?

A few things to keep in mind are: What is the slope? If the slope is greater than a 3:1, consult with an engineer. If the slope is over 2:1, it will require structures or special stabilization techniques.

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How many blocks do I need for retaining wall?

To estimate how many blocks you’ll need per row, divide the total length of the wall by the length of the block. To figure out how many rows you’ll need, divide the ideal wall height by the height of the block. Make sure to account for the first row being half-buried.

How high can you build a wood retaining wall?

Your walls can be as long as you want, but limit the height to 4 ft. Add more terraces as needed to retain higher slopes, stepping them back about 4 ft.

How deep should a footing be for a retaining wall?

The general rule of thumb is to bury about one-eighth of the height of the wall. For example, if your wall will be three feet (36 inches) tall, the first course of blocks should start five inches below soil level. The gravel base should start three inches below this.

How do you install a retaining wall on a slope?

  1. Place the drain pipe at the lowest possible point toward the back of the trench.
  2. Place a minimum of 6 in. …
  3. Excavate the second step up making sure to accommodate for the base material and buried block. …
  4. Place the base course of blocks on the base material and check for level.
  5. Fill the hollow cores and 12 in.

Should you use fabric behind retaining wall?

Use fabric behind the wall

Fabric keeps rock and soil separate. Install it in a U shape way behind the wall. Fabric keeps soil from leeching out of walls.

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What is the best base for a retaining wall?

Due to soil erosion, your retaining wall should be built on a solid foundation made from paver base. Similar to gravel, paver base is a form of construction aggregate that contains crushed rocks such as limestone. Choose a paver base with landscape rocks between 1/2-inch and 3/4-inch in size.

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