Laying blocks or bricks

Step 1 - Prepare the site

Mark the work area using string wrapped tightly around pegs or stakes. (The work area should be 150mm wider than the finished area to allow a clear space to work in.)
Dig the area, marked by the sting - this will be the work area. The depth of the work area should be:

100mm deep for concrete driveways or garage floors
75mm deep for paths and area with light traffic
Allow an additional 75mm depth for a sub-base if you are building a new structure.

Use a spirit level to ensure the area is flat.
To build a sub-base for a new structure
Dampen the work area base with water and then roll so that base is firm and compact.

Add a layer of small stones, scoria or rubble to cover the work area base. Again dampen the stones with water and roll so that the base is firm and compact and no more than 75mm thick.

Step 2 - Mix the mortar

Calculate how much mortar you will require (one 20kg bag of Cemix Drimix Mortar Mix is enough to lay 30-35 standard bricks, or 20-25 concrete blocks). Empty contents of Cemix Drimix Mortar Mix into a wheelbarrow, mechanical mixer, or onto a smooth non-porous surface. Add water gradually, mixing thoroughly until a smooth mix is achieved. Under ideal conditions a 20kg bag of Cemix Drimix Mortar Mix would require 3 litres of water.

Step 3 - Lay the blocks or bricks

Dampen clay bricks before laying them, however concrete blocks should be laid dry. Trowel a layer of mortar 15-20mm thick between the concrete foundation and the first row of bricks. Leave small gaps in the mortar of the first layer of bricks for drainage. Once placed tap the bricks or blocks firmly into position. Trowel mortar vertically on the next brick or block 10-15mm thick and position it against the first. Continuously check with a spirit level and your string level as you progress. Adjust the string level to the right height as more rows of bricks are added. Pointing bricks is easier after the mortar has initially set.

Step 4 - Finish the blocks or bricks

Use the trowel to remove any excess mortar between rows. Later use a stiff brush to remove any smears from the bricks or blocks. Once the mortar starts hardening, a round bar or tubing, can be pressed into the mortar to ensure it has a professional and even finish. After the wall is cured, spray apply CEMIX Brick & Block sealer.