External finish of the houses is important and hence you must know a little about the finishes that you are dealing with. It will be of great help as there is a lot more to these external finishes that what people commonly know.
Factors Affecting Choices Of Rendering
Rendering in Sydney and all over the world are affected by various factors. Knowing these will help you make a better choice of rendering for your home.
Substrate: Substrate is what lies under the rendering. It impacts rendering because the render will have to adhere to the existing substrate and move with it.
Age Of The Building: The ascetical setting, the substrate and the method of construction vary with the buildings of the different time period. Along with that, it also affects the amount of repair, preparation and maintenance of the exterior of the building.
Colour And Finishing Effect: This is another factor that affects rendering in Sydney and everywhere else. The finishing should be up to your liking and different renders come in different colours and finishing.
Stone or brickwork doesn’t provide an attractive or weatherproof finish, hence homes are typically rendered. It is also the cheapest way to make the exterior walls waterproof again. Painting, rendering, and cladding are three different types of exterior finishes available for the home.
Components Of Renders
The components of render vary in amounts to determine the type, property, and characteristics of render. The components are-
Binding Agent: This one acts as the adhesive and holds the render together. Renders gets its strength, permeability, and moisture resistance from this component. Cement, gypsum, clay or lime is usually used as the binding agent for rendering in Sydney and all over the world.
Filler: Structural fillers are the volume of render. It constitutes the bulk of the plaster. Sand is the most commonly used filler among other aggregates.
Water: It activates the binding agent.
Fibre: Fibre provides render strength and stretch, in more technical words, tensile reinforcement and better elastic performance. Initially, horsehair was used, but with time, straw, hemp, and red fibres came in play as well. Fibreglass, nylon mesh and steel fibres are also used nowadays.
Additives: These are the chemicals that alter the characteristics of render, like its colour, durability, workability, and elasticity. Acrylic, silicon, and polymers are some common additives.
Types Of Render Finishes
There are quite a handful types of rendering in Sydney.
There are Lime Render that is made with lime, these are very flexible and breathable. These are used in traditional buildings and the ones made of timber frames since they experience a lot of movement. It absorbs the water like a sponge and when the weather turns hot, the water from the render evaporates. It is eco-friendly, lasts long and is low maintenance. It is also attractive and can be used on various substrates. It is soft, expensive and needs someone experienced to apply it. Then there is sand and cement render, clay render, pebble dash etc. There is a lot more to the renders than what meets the eye. Understanding the rendering in Sydney well can help you a lot.