How to Render - Made Easy with Cement Rendering in Sydney

Rendering a wall is the act of applying a layer of material such a sand & cement (lime can also be used) to a brick or masonry wall to render it smooth with the help of cement rendering in Sydney. The wall may then be painted if desired.

Things you'll need: Wire brush, Plastic or wooden float, Wire scratcher, Steel trowel, Wooden battens, Straightedge, Spray bottle

Preparation is the key: Make sure your wall to be rendered is really clean and etched so you get maximum keying and suction between render and masonry. Chip away any old render or loose mortar. Brush off any organic growth or material. If the bricks have a smooth surface texture, chip away at the front of the bricks to create a key for the render.

Fix vertical battens to the wall about 10mm thick, and about every 900mm, packing them out where necessary to take up undulations in the wall.

When fixing the first batten to a corner or the wall, make sure it is straight and upright even if the wall is not. Each space between these screeding battens will be filled separately. This method is the easiest way to keep the render flat and even. Before you start, spray the wall lightly to make damp...this will help to achieve good suction.

Render Mix: 1 part cement....6 parts clean sharp sand (tip...try and use plastering sand)

Add the correct amount of clean water to get the best trowel able mix, too wet and it will slump and too dry and you won't be able to apply it (it will crumble). Also add a waterproofing plasticizer to the mix. This helps to stop water penetrating the finished render and improves flexibility

Application: Starting at the top, load the hawk and then pick up the mortar on the trowel. Pushing upwards in a slight arc and keeping a firm pressure, build up the render on the wall between the battens. Level this undercoat off by "see-sawing" the straightedge upwards along the battens. When each bay is filled scratch the surface using a wire scratcher. Allow to dry before removing the battens and filling with the same mortar mix.

The render coat can be built of up to two or three layers, first a rough keying scratch coat 5-10mm, a second body coat of 10-15mm with scratching and then a final coat 5-8mm (the thickness can vary depending on the state of the wall..i.e. a "straight" or "plumb" wall should only require the two coat system.

In hot conditions outside you may need to control excessive drying, shrinkage and cracking by keeping the render moist with a sprayer (though not dripping wet)

Finishing: To achieve a matt slightly rough finish, rub over with a plastic or wood float, or a steel float for a smooth paintable finish.

If you’re in Australia and cement rendering in Sydney looking for the best service at affordable price then you should definitely try Seven Star Rendering P/T.

Understanding the Nature of External Rendering Service in Fairfield

Talking about external rendering service in Fairfield is the process of applying building walls with a smooth external finish. The buildings are those built from concrete blocks. The render is a bonding agent or mortar composed of fine aggregate and cement.

An external render is great wall protection. It can last long and resist weather. It offers good bond strength to your wall. Materials like earth must be rendered all the time while materials like stone and brick don't need rendering but they can be rendered.

Materials for External rendering service in Sydney

Originally, render was made from cement, sand and lime. It can also be made from a plasticizer, which is a substance that will improve the workability of the render. The render can be painted so that it will look attractive and can be protected from weather. However, you can also avail of self-colored cement renders.

Function

External rendering can be applied to your exterior walls in order to minimize moisture which penetrates into your underlying masonry. This can also be utilized for improving the look of a plain masonry wall.

Things to Consider

In terms of external rendering, there are things to be taken into account including the kind of base material or substrate, the exposure level to rain and wind and the finished exterior's desired look. In turn, such factors will dictate the render's composition and the coats that you should apply.

Before you apply a render to your wall, you need to keep in mind some things. For repairing decayed render, it is important to brush off the wall so that any loose material will be removed. After this, you can bond the external render properly to your wall. This also depends on the kind of wall finish you have. You can observe that while the water in a number of external renders evaporates, the latter will shrink. You can avoid this if you ensure that your wall is wetted properly beforehand and the coats applied are one-half inch thick. This is helpful in drying the mix sooner. The wall's deep hollows can be covered up using small tile bits. The mortar should be dry before the application of the first coat. After doing the fairly thin coat, you can apply subsequent coats using a trowel. The mortar will begin to have cracks when it is drying up. You should make sure that the cracks are caused by the shrinking process instead of the breakdown of the previous coat.