Follow the block manufacturer s instructions for wall height limits.
How to build a retaining wall concrete blocks.
So to make a retaining wall that will last as long as life you should consider going with concrete blocks.
Heavy retaining wall blocks the blocks we used in our demonstration weigh 14 pounds each keep the soil at bay with their weight.
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.
Check the level and alignment of all blocks as you go along adjusting them with a rubber mallet.
The success of your retaining wall depends on a level base.
Of leveling sand and half the height of the first course of blocks.
Retaining walls can be build of many different materials including wood timbers bricks or natural boulders.
But for diyers retaining wall blocks made of concrete are the best solution.
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.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
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.
There are materials as well but they don t last long.
Cross section of a retaining wall a cinder block retaining wall is only as straight and solid as the base it s built on.
The retaining wall can be made from concrete blocks poured concrete treated time boulders and rocks.