Cemix Cemkey Concentrate is used for bonding Portland cement screeds, and renders to brick, concrete and concrete masonry without any need to hack the surface to obtain a bond. May be used on new or old surfaces. Cemkey Concentrate can also be added to the mixing water to improve resistance to trace acids and alkali, as well as reducing surface dusting. Coverage:Primer: 8m2 to 12m2 per litre. Coverage is dependent on the roughness and porosity of the existing surface.Mixing:Used as a bonding agent: dilute 1 volume of Cemkey Concentrate with 1 volume of clean water.For use with mixing water: dilute 1 volume of Cemkey Concentrate with 5 volumes of clean water.e.g. 3 litres of Cemkey Concentrate to 15 litres of water per 40kg bag of Portland cement.
How to mix concrete
Learn how to mix concrete in a wheelbarrow.
How to make coloured concrete
Coloured concrete is easy to make and a great way to improve the look of your home.
How to remove a concrete slab
Find out how easy it is the remove a concrete slab yourself.
How to level concrete
See how to give wet concrete a clean, level finish.
How to build a brick wall
The art of laying bricks is a good skill to learn if you want to take your D.I.Y. to the next level. We’ll show you what’s involved in building a brick wall.
How to install wire mesh in concrete
Steel is an excellent way to strengthen concrete structures. Learn how to lay it properly before you pour concrete.
How to dig a foundation
Before your pour any concrete footings, learn how to dig the trench correctly.
How to build a stud wall
Tips for building a stud wall inside an existing house frame