Floor Rendering Mix

The lime makes the render more workable and reduces cracking when the render dries.

Floor rendering mix.

Advantages of cement rendering. Before screeding a floor make sure the concrete is clean and free of dust so the screed can adhere to it. To change the colour of the concrete render you can add a tint to the render itself at the mixing stage or you can paint it once it has dried. A simple rule is never to make the rendering mix stronger than the material to be rendered.

The colour of the render itself depends on the colour of the cement used in the mix the lighter the cement used the lighter the render will be. The render should be soft putty like state and should. If oxides are to be added then you must follow the manufacturers guidelines. Very little water is used creating a thick mixture with little shrinkage after application.

For instance if you want to render a concrete block of about 3 6kn you do not require a potent mix. Add only small quantities of water at a time while continually mixing the render. Deck mud also known as floor mud or dry pack mortar is a simple mixture of sand portland cement and water. The best way to mix the render is with a cement mixer as this ensures that the mix is even and that the correct amount of water is added.

The best mix for rendering depends on what you re rendering on to and the golden rule is you never make the mix stronger than the material that you re going on to. Firstly combine all the dry materials until the colour is uniform. For example lightweight concrete block that s 3 6kn so we don t want a really strong mix for this because if the wall moves which it will as you always get some expansion. Any general purpose cement can be used.

Cement render consists of 6 parts clean sharp fine sand 1 part cement and 1 part lime. Mixing in a wheelbarrow is fine but almost always there is a little unmixed sand and cement at the bottom which does not become apparent until emptying out the barrow. Then combine the screed mix with water so it s the consistency of paint. Mix up enough render that can be used up in 30 40 minutes.

Rendering is a coating of cement sand which can be applied to both internal and external walls and performs a lot of functions as well as for the waterproofing inclement weather protection uv depreciation fire rating appearance through colored or texture application and a plenty of others positive features to achieve a quality result it is very important that the ratio is adequated. Various additives can be added to the mix to increase adhesion.