How To Build A Block Wall On A Concrete Slab

Exterior wall on slab must be out on the edge.

How to build a block wall on a concrete slab.

The process starts on the top of the. Once this concrete has cured it will have created a bond between the block rebar and concrete slab forming a single structural unit and the rest of the blocks can be laid as normal. For a freestanding landscape wall this involves creating a simple rectangular outline of the planned foundation. Draw an outline of the wall on the concrete with chalk and then remove the blocks.

Start the third layer with a regular cinder block and build out. An exterior wall must be placed on the outside edge of the slab so the exterior siding laps down and over the edge of the slab. Reinforced block and concrete walls block foundations use cinder blocks 8 x 8 x 16 inches that are stacked on each other and cemented in place with mortar. Repeat the buttering and laying blocks technique to build out the wall s second layer.

Step 2 mix the mortar according to the directions on the package. Start the fourth layer with a half block and continue starting layers with half blocks every other layer until your wall has reached the desired height. Consider a wood shed floor treated lumber joists and plywood. This prevents water from leaking under the bottom of the wall to the inside of the building.