Summary When laying bricks you need to bring together careful planning and several skills. The steps below outline all the tasks you need to complete for competent brick laying: 1 Checking the foundations 2 Mixing mortar 3 Laying the mortar 4 Laying the first brick 5 'Buttering' the edge of the brick 6 Checking the level of the bricks 7 Building the courses 8 Checking the vertical 9 Pointing Tools Trowel, spirit level Materials Mortar, bricks Step 1 - Checking the foundations When laying any brick ensure that the foundations are solid. Remember, a patio may only be laid on a bed of sand, which will not support the weight of a barbecue or other structure. If in doubt pull up a paving slab to inspect the foundations. Any movement of the substructure will cause the mortar to crack and the structure to become dangerous. Step 2 - Mixing mortar The technique for mixing mortar is similar to that for mixing concrete. Mortar consists of cement, sand and a plasticiser such as hydrated lime or a proprietary liquid. The mix depends on the exposure level of the wall. Mortar only remains workable for two hours and cannot be re-moistened with water as this makes it unusable. Step 3 - Laying mortar For small projects it is easier to purchase a ready mixed bricklaying mortar which may need a plasticiser. Use a builders trowel to lay some mortar in a sausage shape where you want to lay the brick, it should be approximately 19mm deep. Making grooves in the mortar will make it easier to tamp the brick down. Step 4 - Laying the first brick Always lay the first brick at a corner of the wall. If the brick has an indentation on one side, called a frog, this should face upwards. Press the brick down until the mortar is 10mm thick. Step 5 - 'Buttering' the edge of the brick When laying the second brick, mortar must also be added to the edge you are butting against the first. ‘Butter’ the mortar against the end of the brick ensuring there are no air pockets as these will later collect water and cause damage in a frost. Step 6 - Checking the level of the bricks After laying four or five bricks check they are level with a long spirit level. It is very important to make the foundations true as any errors here will be magnified later. If you are unhappy with the height of any brick use the trowel to tamp it down. If it is too low do not hesitate to remove it and apply some mortar. Only proceed when you are completely happy that the foundation level of bricks is true. Step 7 - Building the courses Build up the various courses or levels of bricks in the same manner. Any cut bricks you use should be placed with the cut side facing the join. Ensure that the bond is true, that is that none of the joins are above one another and are always about halfway along the bricks above and below. Step 8 - Checking the vertical As you build up the courses, periodically check that they are vertical and not leaning. Remove any excess mortar as you work. Step 9 - Pointing Once the mortar is dried it is necessary to shape the exterior mortar. Scrape out 13mm of mortar. Reapply fresh mortar with a pointing trowel creating a weatherstruck joint as shown. This should ensure a neat appearance and provide a more effective rebuff to the elements.