And What You Should Be Using Instead!

Most historic buildings have been constructed using porous materials like brick, timber, or plasters made from lime. Using non-breathable materials (such as modern paint) on these buildings can lead to a number of future problems, such as dampness and physical deterioration.



If you have invested a lot of time and money into an old property, we strongly recommended that you choose a breathable type of paint. In order for you to do this, you’ll need to be aware of a few simple facts.

Breathable paint is a material that allows the water vapour to permeate, travel, or transfer through itself. Its basic purpose is to allow water to evaporate quickly, letting the building’s walls, window frames, door frames, and the render to breathe naturally without trapping moisture.



Rates of permeability are defined with an Sd value; this measures how much of a barrier the material is to water vapour. The lower the Sd value, the more breathable the paint.

So, we now understand how and why heritage buildings need to breath. Some paint companies may advise you that their plastic, acrylic, and other modern paints are breathable too; but here’s why you should definitely think twice before even considering them:

1. Modern paints will crack and flake, rotting the timber of your building underneath as they trap moisture.
2. If an older property is painted with a modern/ plastic-based paint, it will prevent moisture from escaping through the walls and exacerbate damp problems. This will notably harm the aesthetics of the building; and in an excess amount, be flagged as a health hazard too.

We recommend redecorating older buildings with clay and mineral paints (NB: Clay paints should ONLY be used internally and NOT on the outside of your building) or even better a good quality lime wash, these have high levels of breathability and will work well with the materials of your heritage build.

Earthborn Paints are dedicated to providing just this, as well as paints that are environmentally friendly and available in an array of exciting colours.

With Claypaint, Lifestyle, Eco Chic, and Eggshell finishes, making a stylishly ethical choice couldn’t be easier- and you can rest assured, knowing that your heritage building is receiving the best kind of treatment.

For more information about Earthborn Paints’ safe and eco-friendly collection, or our premium quality hand-made Lime Wash (available in bespoke colour matching) visit www.heritagecobandlime.com/paint-wax-and-laquer. 

Or if you’re looking to restore your property, following existing damp and mould conditions contact us now and we’d be happy to help. www.heritagecobandlime.com/contact