Masonry Levelling Compound (MLC) is a preblended, cement-based render that can be easily applied as a single levelling\/flanking coating toconcrete blocks, bricks, and other masonry backgrounds to produce a high quality even and true surface.
Ensure all surface preparation instruction are followed.
All freshly applied material must be weather protected for a minimum of 24 hours after application. Exposure of applied product to rain, snow, dew, or other inclement weather conditions, direct hard sunlight or sources of heat while it is curing may have a detrimental effect on the finish.
The substrate to which the chosen product is to be applied must be installed in strict accordance with the manufacture&rsquo ; s specifications and recommended installation procedures. For concrete/masonry substrates the suppliers required curing time must be allowed after installation to ensure the joints in the substrate have completed cured, shrunk, and stabilized. All solid concrete substrates must be fully cured and dry. New concrete must be at least 21 days old prior to the application of any render product.
Surface imperfection such as blowholes, large cracks and spalling must be patched and levelled to the required tolerances and flatness with Specialized render materials before this product is applied. All nibs, protrusions and excess mortar on the surface of the bricks or irregularities in the slab must be ground off prior to rendering.
All surfaces must be clean and free of debris, dirt and dust, efflorescence, grease, oils, curing agents, cleaning solutions, mould and algae or any other contaminants that may affect adhesion. Deeply contaminated substrates must be abraded to provide a clean sound surface. All loose or damaged material must be removed by water blasting, captive shot blasting, or mechanical wire brushing and then washed down before rendering commences.
Painted or glossy surfaces such as power floated concrete must be specially primed, acid etched or mechanically abraded prior to the application of any render.
All cracks that may be the subject to ongoing movement must be correctly repaired and reinforced.
All very porous surfaces should be sealed with an appropriate paint sealer prior to the application of the plaster.
Mixing: 7.5L of water per 20kg
Apply by trowel or plastering pump.
Product must be applied not less than 4mm thick and up to 50mm.
If pointing between bricks is in poor condition or if the dwelling is subject to excessive movement a layer of 160g fibreglass mesh with a minimum aperture of 8 x 8 mm can be embedded into the Masonry Levelling Compound. All stress point should be reinforced with butterflies of mesh.
Apply render only when the temperature is between 5°C and 30°C. Once applied the render should be floated or screed flat to achieve a level plane which is free of deviations. Once dry the surface can be sanded flat using a longboard or scraped with a broad-knife to remove any ridges or minor bumps.
