Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
How to build a retaining wall concrete blocks.
Tall wall excavate a trench deep enough to accommodate 4 to 6 in.
Staring at one end place the first course of concrete blocks top side up on the crushed rock with the front lip facing up and towards the front of the wall.
Of leveling sand and half the height of the first course of blocks.
Of compacted base 1 in.
Using a tape measure decide the length and the width of your retaining wall then mark off the area with the garden stakes and string.
How to build a concrete wall figure a.
There are materials as well but they don t last long.
Follow the block manufacturer s instructions for wall height limits.
But for diyers retaining wall blocks made of concrete are the best solution.
Retaining walls can be build of many different materials including wood timbers bricks or natural boulders.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
To create a solid foundation dig a trench for the first course of your interlocking retaining wall blocks to sit in and make sure the ground remains even throughout.
The success of your retaining wall depends on a level base.
Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.