Plastering & rendering
Rendering
Good value, fast, efficient, professional – clean and tidy. When you ask Simply Decors Plastering to come and carry out your plastering requirements, you can be sure that your finished project will have smooth lines and crisp corners – and your property or business premises will be left in good order.
Using our own equipment and experienced workers, the company delivers a high quality plastering service to individuals and businesses. The service is intended to meet regulations, helping customers to have reliable, hassle free, clean work completed on their property.
Rendering is 3 parts plastering sand mixed with 1 part cement, with plasticizer and waterproofing agent added to create a waterproof layer for exterior applications.
Plastering
There are several types of plaster, each made for specific applications:
Finishing plaster
This is used for the top and final coat on a wall or ceiling as it produces a fine, smooth finish when it has been polished. This top coat is also known as a ‘skim’ and applying it is called ‘skimming’.
Ensure you select a finishing plaster that is suitable to cover the surface, or if in doubt choose a multi-finish plaster.
- Aim for a coat that is 3mm (⅛in) thick. Drying time will depend on ambient temperatures and airflow. Ensure all areas of plaster are fully dried before doing any decorating, usually 24 hours.
Browning plaster
Use this plaster for the initial backing coats of plaster straight onto porous surfaces such as brick, block or masonry.
- Aim for a thickness of 10mm (⅜in). Allow drying time of 2 hours.
Bonding plaster
This is used for backing coats of plaster that are applied to non-porous surfaces, such as those pre-treated with a PVA bonding agent.
- Aim for a coat that is 10mm (⅜in) thick. Allow 2 hours for it to dry.
‘One-coat’ plaster
A product that claims to be a backing and finishing plaster all in one, which can be applied in a couple of layers. Separate layers of the different types of plaster as listed above are preferred however.
Lime plaster
This is an old fashioned form of plaster, where the binding gypsum is replaced with lime. It is an environmentally friendly plaster, although it is up to three times more expensive than standard plaster, and takes longer to apply.
The plaster is a mix of 1 part lime to 3 parts coarse sand, with 4kg of horse hair added per cubic metre of plaster to form a ‘key’ between layers.
- Always apply to a well wetted wall.
Lime plaster is designed to absorb and evaporate moisture, so do not replace such materials with waterproof cement-based renders as this will encourage penetrating damp to take hold.
- If employing the services of a plasterer, be sure before you hire them that they are experienced in using lime plaster.
Daub
This is one of the earliest forms of wall finish, being made from mud, animal dung and straw. It is applied to a structure of ‘wattle’, or slim interwoven lengths of wood, which provide a structural trellis for the daub to hold on to.
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