Use a hawk to hold your supply of render as you fill the hole, the patch should be thicker than the adjacent render. Mix more than enough render or render patching compound to fill the hole and trowel it onto the mesh, pushing the render into the mesh. Now that all of the prep work is done it is time to apply your new render. If this is the case then it must be repaired, this is a relatively simple process which involves cutting a new piece of mesh and attaching it to the wall with the galvanised nails. It is likely that any steel mesh reinforcement will be damaged if the render on top is damaged. Step two: Repairing any steel mesh reinforcement It is a simple case of chipping away at all of the damaged area until all of the weak/damaged render is removed. Once you have donned your safety goggles and work gloves – and if necessary positioned your ladder securely on a level surface – you are ready to begin removing all of the damaged render with the cold chisel and the short-handled sledge hammer. Finishing tool (if you wish to duplicate the texture of the surrounding render).Galvanised Nails (depending on whether the render is reinforced with wiring).Steel mesh (depending on whether the render is reinforced with wiring).Metal shears (depending on whether the render is reinforced with wiring).Ladder (depending on the height of the job, of course).A hawk for moving the mix to the job (you can buy one or make one by screwing a short length of dowel or broom handle to a square of plywood)ĭepending on the job, you may also need the following equipment:.Premixed render or render patching compound.Safety goggles (always wear goggles when breaking stone or cutting brick).To repair the rendering on your external wall you will need the following: You are also far less likely to cause yourself an injury! Cement-based paint will need a primer coat to prevent blotches but this will not be necessary if you chose to use an acrylic paint.Ī poor workman may blame his tools but without the right tools a good workman may find themselves doing the same thing.Īs is the same with any DIY job, you are far more likely to achieve good results if you do the job properly, with the right equipment. When you come to paint the walls you should dampen it prior to applying the paint. You should ensure though that you let the rendering patches cure for at least 30 days before doing this. It can be difficult to match the colour of rendering and so, for a surface that requires many patches, it may be far easier to just cover the whole surface, once patched, with a cement-based paint or acrylic exterior paint. The caulk can be peeled away easily when you do. If you spot large cracks but don't have time to make a thorough repair, at least seal the openings with a bead of silicone caulk to temporarily keep out water until you can get around to making permanent repairs. In the case of small cracks, they can be filled with all-acrylic or siliconized-acrylic sealants. However, where this is not possible, you should use a rendering patching compound and refer to the package instructions for specific information for that product. It is ideal if you can patch large cracks and gaps in a rendered surface using the same rendering mix that was used on the walls initially. Overtime the build up of water and the cyclical temperature changes will cause those small cracks to turn into major problems which are both costly and difficult to fix. The smallest of cracks in the render will allow water to seep into the underlying structure and will eventually cause damage. The blog should detail the problems associated with silicone render and discuss what people can do to minimise the problems when opting for render at their home or property.Rendering is popular because of its durability and its uniquely textured appearance, however, it is not immune to damage and can crack quite easily if, for example, the house foundation sinks unevenly or new framing members shift and shrink as they dry out.Īs soon as you notice a crack in your rendering, however small, you should make a point of getting it fixed as quickly as possible. Silicone Renders Are Effective But They Aren't Perfect.Is Silicone A Better Solution When Applied Directly Than Monocouche Render?.Monocouche Render Has Many Qualities On Properties.Be Flexible When Looking To Colour Renders - One Coat Or Layer Is Rarely Enough.Other Renders Are More Environmentally Friendly.The Weather Resistant Qualities Of A Silicone Finish Are Crucial.Silicone Render Works Best With Wet Weather.What To Consider While Choosing Silicone Render For External Walls.
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