Foundation all concrete block walls must rest on a sturdy foundation of poured concrete.
How to set concrete block wall.
Stretch a line with mason s blocks between the leads.
Never attempt to move a block after the concrete begins to set.
For example if your cinder blocks are 8x8 in 20x20 cm and you want to use 2 blocks to make up the wall s width your total wall width would be 16 in 40 cm.
Once several concrete blocks have been laid use a long level to verify the alignment.
Then spread the mortar on the footing and begin stacking the blocks beginning in a corner.
Lay a mortar bed on the footing between the leads and set the block working from both sides to the center.
Step 11 at the end of the wall set an 8x8x8 half block into the mortar bed with the smooth side facing out.
Step 12 using a mason s line as a guide for the remaining block continue building the wall until it is complete.
To set the next course of block apply a one inch thick mortar bed along top of the first course.
Follow the block manufacturer s instructions for wall height limits.
If the area where you are planning to use the cinder blocks is already covered with a concrete pad you can easily build a cinder block wall right on top of the concrete.
Next prepare cement mortar by mixing water and dried mortar in a 5 gallon bucket.
To determine the width of your future wall decide how many cinder blocks you want to use for the wall width then calculate the width using the block s measurements.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Grab the block by the.
Check both the tops of the blocks and the outside edge.
The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line.
Concrete block doesn t require gentle treatment.
Tap the blocks to correct the alignment while the mortar is still wet.
Cinder blocks are a great tool for building garden walls or storage structures in your yard.
The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block.