With all our paints, water thin by 20% to act as the mist coat onto bare plaster. If you’re painting lime plaster, it’s once again the best choice, as it is both fully breathable and emission-free, meaning there’s no risk of a reaction between the chemicals in the paint and the drying plaster.
Table of Contents
Do you need a mist coat on lime plaster?
With all our paints, water thin by 20% to act as the mist coat onto bare plaster. If you’re painting lime plaster, it’s once again the best choice, as it is both fully breathable and emission-free, meaning there’s no risk of a reaction between the chemicals in the paint and the drying plaster.
How many coats lime plaster?
3 coats
Lime plastering is generally applied in 3 coats, but it is common to find 2 coats or even single coat work in vernacular or early structures. In 3 coat work the first coat on masonry or brickwork is generally known as the scratch coat or render coat.
How many coats lime render?
Allow four coats of limewash for painting finished lime render. Alternatively, use a more hard-wearing, highly breathable silicate paint. These paints have a longer life expectancy, require fewer coats and are generally more water repellent.
What is finishing lime?
Finish lime is made of double-hydrated dolomitic limestone and is especially formulated for use with gauging plasters and keenes cement (sold separately) to provide smooth troweling, highly workable plaster surfaces.
How long does lime plaster last?
It sets very slowly by carbonation and typically cures in around 12 months. Non-hydraulic lime plaster can stay wet indefinitely in damp conditions where there is no opportunity to carbonate.
Can you paint over lime plaster?
Our natural emulsion is the perfect choice of paint to use on lime plaster. Natural emulsion is more opaque than clay paint and so the coverage is better and the surface is more durable.
Can you paint straight onto lime plaster?
Lime render or plaster needs to be fully cured before painting. The best person to advise you is your lime provider, however as a general guide allow at least 1 month curing for every 5mm of thickness. In poor drying conditions this time period may be extended.
Can you seal lime plaster?
Silguard reduces water penetration and surface dusting, making it the ideal alternative to acrylic sealers for a wide range of lime plasters, renders, floors and related materials. Silguard contains waterglass and siloxane to harden slightly dusty surfaces and make them water repellent.
Does lime plaster stop damp?
It is a lining system which when fixed to the wall protects plaster and decorated finishes from the damp in the walls. It does not cause moisture to move into other areas because it is ventilated. It does create a warmer dry environment in the property without affecting the way the wall works.
What is the difference between lime plaster and lime render?
The principal difference between a lime mortar and a lime plaster or render is one of consistency. All three are made from either hydraulic or non hydraulic lime mixed with sand and water.
Is lime plastering difficult?
Lime plastering requires patience and a little know-how to achieve beautiful, functional and a long lasting lime plaster finish.
What is lime putty made from?
Lime putty can be made from either type of lime, and is made by adding an excess of water to quicklime. Hydraulic lime putty will set underwater within hours or days making them impractical, whereas non-hydraulic lime putty will remain plastic and improve with age.
Which paint is best for lime plaster?
limewash
Many traditional builders and conservation specialists recommend limewash because it is the most authentic finish for lime plaster.
What paint goes on lime plaster?