Glossary Terms

Common surface types and terms used in limewashing

Words
© Andreas Riedel
Published
2024.09

Drywall, Plasterboard, Gyprock

Drywall (also called plasterboard, wallboard, sheet rock, gypsum board, gypsum panel and gyprock) is a panel made of calcium (gypsum), with or without additives, typically extruded between thick sheets of facer and backer paper, used in the construction of interior walls and ceilings.In the mid-20th century, drywall construction became prevalent as a time- and labor-saving alternative to lath and plaster. Source: Wikipedia

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Ghosting of underlying wall 

This refers to a shadow or ghost line or patch that may come to the surface after limewashing.

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Limewash paint 

Whitewash cures through a reaction with carbon dioxide in the atmosphere to form calcium carbonate in the form of calcite, a type of reaction generally known as carbonation or by the more specific term, carbonation. Lime wash is pure slaked lime in water. It produces a unique surface glow due to the double refraction of calcite crystals. Limewash and whitewash both cure to become the same material. Source: Wikipedia

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Plaster

Plaster is a building material used for the protective or decorative coating of walls and ceilings. In English, "plaster" usually means a material used for the interiors of buildings, The most common types of plaster mainly contain either gypsum, lime, or cement, but all work in a similar way. Source: Wikipedia


Lime plaster
Lime plaster is a type of plaster composed of sand, water, and lime, usually non-hydraulic hydrated lime (also known as slaked lime, high calcium lime or air lime). Compared to cement plaster, plaster made from hydrated lime is less brittle and less prone to cracking, requiring no expansion joints. Source: Wikipedia 

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Render

Render commonly refers to a less smooth finish made from sand, lime and cement.

Cement Render
Cement rendering is the application of a mortar mix of sand and cement, (optionally lime) and water to brick, concrete, stone, or mud brick. It is often textured, or painted after application. It is generally used on exterior walls but can be used on interior walls. Depending on the 'look' required, rendering can be fine or coarse, textured or smooth, natural.

The cement rendering of brick, concrete and mud houses has been used for centuries to improve the appearance (and sometimes weather resistance) of exterior walls. It can be seen in different forms all over the world.
Source: Wikipedia

Lime Render 
Lime render is a render made from lime rather than cement, it sometimes has also the addition of a small amount of cement, it can be applied to the internal or external surfaces of buildings.

It allows the building to ‘breathe, as lime is porous, it allows for the collection and evaporation of moisture. Cement only in contrast, an often applied render for stone or brick buildings, traps moisture behind the stonework, which can result in the erosion of the masonry. It is also naturally anti fungal due to hit high antibacterial properties and can protect the building against modern day pollutants.

Source: Bauwerk Colour

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SQM/ SFT

Square Metres or Square Foot. This means the total wall area of a room or building. This is calculated by wall width by wall height x how many walls, this will give you the sqm/ sqf area of your space. 

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V.O.C Volatile Organic Compounds 

Volatile organic compounds (VOCs) are organic compounds that have a high vapor pressure at room temperature. Which relates to the number of the sample's molecules in the surrounding air, a trait known as volatility.

VOCs are responsible for the odour of scents and perfumes as well as pollutants. Some VOCs are dangerous to human health or cause harm to the environment. Most VOCs are not acutely toxic, but may have long-term chronic health effects. Source: Wikipedia

View More about Environmental Qualities of Limewash Paint

Wet Edge

This refers to a painting technique, that while painting, keeping the edges of your paint always  wet, not letting them dry out. This is a term often used in limewash application.


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