How To Use Floor Levelling Compounds To Achieve The Finest Surface
The Perfect Level Of A Screed is SR1
When laying any sort of flooring the ideal is for the substrate to be as level and flat as possible, especially in the case of floor surfaces such as tiling. The aim is always to achieve a level of SR1 as this is the highest standard of floor level.
In order to have as superior a finish as possible, floor levelling compounds are used, and these are mainly either cementitious or thin section latex, which can be used to level pour substrates or as the final layer on top of a screed to achieve the finest tolerance. Thicknesses can vary depending upon the materials used, but can be as little as 1 mm, up to 40 mm.Before application, the substrate needs to be perfectly clean and free from plaster droppings, polish, paint, grease, dust, and any loosely adhered material. It is advisable to use a primer in order to ensure the correct bond to the substrate and this will also help with the flow of the compound.
Latex compounds can either be mixed with potable water, or as a two-part system of powder and a liquid latex bottle. In order to ensure a complete mix, an electric mixer is required. Compounds that are mixed with water must have it added in precisely the correct amount. The screed can be applied with a trowel, and it is recommended to use a spike roller to even out the product and remove any air bubbles. Since these applications are fast-drying the spike roller must be used quickly. Check that the spike roller is clean and rotating properly. The screed can be from 1 mm to 10 mm, and if required, sand can be added to provide extra bulk. Always follow the manufacturer’s instructions.
