Quick Answer: How To Build Timber Retaining Wall?

Does a timber retaining wall need drainage?

Most retaining walls require drainage and are built with a perforated pipe set behind the wall in a gravel base. Because the grade of this yard has a slight slope that will promote water runoff, we can skip this step on this project, but we will add gravel for drainage and back fill with dirt.

What kind of wood should I use for a retaining wall?

The best kind of lumber for these walls is Douglas fir pressure treated with preservatives to discourage rot. It will be green or brown in color and rated for earth-to-wood contact. For timber walls, large timbers for can be very expensive, which is why railroad ties are a common alternative.

How long will a timber retaining wall last?


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What is the cheapest retaining wall to build?

What is the cheapest retaining wall material?

  • Treated pine and is the least expensive material.
  • Hardwood is more expensive than treated pine.
  • Concrete sleepers are more expensive.

How much does a timber retaining wall cost?

Timber retaining wall cost will also vary depending on the type of wood you use. Average prices for materials and labour are: $250 to $350 per square metre for treated timber (pine) $300 to $450 per square metre for treated timber sleepers (hardwood)

How high can you build a wood retaining wall?


What is the easiest retaining wall to build?


How deep do retaining wall posts need to be?

Holes for posts to 150 mm dia, should be 300 mm dia minimum. For posts above this size use 450 mm dia holes. In general try to choose posts less than 150 mm dia as they have holes 300 mm x ~ 1.6 m deep (1.5 m embedment and 0.1 m for post drainage).

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.

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Do you need landscape fabric behind retaining wall?

Whether the wall is made from stones, bricks or wood, it is important to provide a barrier between the building blocks and the soil. Landscape fabric is thin and sturdy and is a simple way to preserve a retaining wall’s construction.

Do wood retaining walls last?

How long do retaining walls last? Timber can last up to 40 years; there’s no limit on the life span of a properly installed masonry or concrete wall.

How much does a 6 foot retaining wall cost?


What can I use 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.

Can I build my own retaining wall?

Retaining walls can be made from wood, bricks, natural stones or concrete blocks. For DIYers, it’s best to use concrete retaining wall blocks, which can be interlocking and are heavy enough to stay in place without cement or other adhesive. Interlocking blocks fit together and add extra security to the wall.

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