Readers ask: How To Build A Small Retaining Wall With Cinder Blocks?

Can cinder blocks be used for a retaining wall?

Add style and support to your yard with a concrete retaining wall. You can build one in just six steps. Concrete blocks are ideal for building walls to hold back the soil after you dig into a slope for a pathway, patio, or another landscaping project. Retaining walls must be stronger than freestanding walls.

How do you build a small retaining wall with blocks?

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.

What is the cheapest type of retaining wall?

What is the cheapest retaining wall material?

  • Treated pine and is the least expensive material.
  • Hardwood is more expensive than treated pine.
  • Railway sleepers are another – slightly more expensive – option and are built to withstand ground and water contact.
  • Concrete sleepers are more expensive.
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How much does it cost to build a cinder block retaining wall?

A cinder block wall costs between $10 to $15 per square foot for materials and is a great option if you’re looking to build curves into your design without extending your budget. It’s affordable, versatile and can be installed quickly and easily.

Should you fill cinder blocks with concrete?

Whenever you are working with cinder block, you can strengthen them significantly by filling them with concrete. This is something that is not difficult to do and will strengthen your cinder blocks quite a bit. You may also find that if you have cinder blocks that are cracked, concrete can help.

Do I need rebar for cinder block wall?

Steel reinforcing bar — rebar — is used in concrete construction to add strength. A concrete block wall will support heavy weights above, but it needs reinforcing against pressure that would cause it to bend, such as earth backfill in a basement.

What is the easiest retaining wall to build?

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. (For a curved wall, mark instead with a garden hose or spray paint.)

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 gravel.

  • Choose gravel that has stones sized between 1/2-inch and 3/4-inch.
  • Fill the trench with a 2- to 3-inch layer of gravel.
  • Use a rake to ensure the stones are evenly distributed.
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Does a 2 foot retaining wall need drainage?

Although there are exceptions, most retaining walls require gravel backfill, soil compaction, pipe or toe drains, and weep holes. Together, these four features will provide adequate drainage for most designs. Only a few types of walls will not require all of them.

What can I do instead of a retaining wall?

Reinforced soil slopes are the most cost-effective retaining wall alternatives. Often times you are using the soil that you already have on hand and do not need to bring in any additional.



  • Reinforced Soil Slopes.
  • Natural Stone Walls.
  • Wooden Timbers.
  • Gabion Walls.
  • Soil Bioengineered Walls.

How long do block retaining walls last?

A concrete retaining wall can be expected to last anywhere from 50 to 100 years. Meanwhile, a brick masonry wall can be expected to last at least 100 years, though the quality of the work will play a role here.

How do you make a strong retaining wall?

Here are three key principles in building any solid retaining wall:

  1. Bury the bottom course, or courses, of the retaining wall one tenth the height of the wall to prevent the soil behind from pushing the bottom out.
  2. Step back the blocks, rocks or timbers to get gravity working in your favor.

How do you estimate a cinder block wall?

After you have found the square footage of both your wall and your block, determining the number of blocks you need is as simple as dividing the wall square footage by the block square footage. If you’re using a standard 16″ x 8″ x 8″ block, find the number of blocks needed by dividing the wall square footage by 0.89.

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Is it cheaper to build with cinder block or wood?

Concrete block homes are sturdy once inexpensive steel reinforcing rods and wet concrete are placed in the cores. However, homes built of wood are less costly to construct, not only because wood is lightweight and plentiful, but also because builders can build such homes quickly.

How much does a 12 inch concrete block cost?

Concrete blocks are referred to as CMUs, or concrete masonry units. The price can vary depending on the actual width of the block. For example, a 4 to 6-inch block costs $1.35 each, while an 8-inch block costs $1.50 each, on average.



Concrete block cost.

Block Size Average Cost
10 inch $1.85
12 inch $2.05

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