Floor Rendering Mix

Add only small quantities of water at a time while continually mixing the render.

Floor rendering mix.

Creating the best mix for rendering. 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. Advantages of cement rendering. Very little water is used creating a thick mixture with little shrinkage after application.

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 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. Firstly combine all the dry materials until the colour is uniform.

You can mix your own sand and portland cement or purchase a ready made mix which may be preferable if this is a one time small project. For instance if you want to render a concrete block of about 3 6kn you do not require a potent mix. Mix up enough render that can be used up in 30 40 minutes. 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. The lime makes the render more workable and reduces cracking when the render dries. 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. The render should be soft putty like state and should.

Any general purpose cement can be used. Various additives can be added to the mix to increase adhesion. Deck mud also known as floor mud or dry pack mortar is a simple mixture of sand portland cement and water. Cement render consists of 6 parts clean sharp fine sand 1 part cement and 1 part lime.

Next pour about 1 inch of screed onto the floor and lay down long wooden battens to divide the room into 10 foot wide strips. 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.