Can you paint terracotta roof tiles?

Yes, you can paint terracotta roof tiles.

For the past decade, terracotta roof tiles have been the go-to material for homeowners looking to add a touch of traditional charm and rustic elegance to their homes. However, this comes at a price — they do not always come in the colour you want, and they are hard to paint without damaging the texture.

It is possible to successfully paint your terracotta roof tiles, though it will take some time and patience to get them right.

Why is it not advisable to paint unglazed terracotta roof tiles?

The answer to this question depends on the type of roof paint you use and whether or not you’re using it in a way that will damage the tiles.

Terra cotta tiles are made from clay and fired in an oven to harden them. They are highly porous, which means they will absorb any liquid applied to them — including paint. Regular latex paint on your terracotta roof tiles will seep into the pores and cause discolouration over time. Even if you choose a water-based or solvent-free latex paint, it can still be absorbed by the tile and cause discolouration over time.

Additionally, some paints contain harmful chemicals for human health and the environment when used on unglazed terracotta roof tiles. These can also cause discolouration over time and other negative effects on your home’s interior air quality.

Modern Seal Roofing recommends using an oil-based or epoxy primer instead of latex paints when painting unglazed terracotta roof tiles.

How will glazing aid in terracotta tile painting?

Glazing is a coating used to make terracotta paint more durable. It also acts as a sealant, meaning that as long as the glaze is well-applied, it will protect the tile from water and other elements.

For most types of terracotta paint, glazing is not necessary. However, if you use one of the following types of paint, glazing after application will be beneficial: oil paint, watercolour, or acrylic.

If you do not use glaze over these paints, they are likely to chip or fade after a short period. Glaze prevents this from occurring by providing an extra layer of protection for your painted tiles.

Original Source: https://www.modernsealroofing.com.au/blog/posts/can-you-paint-terracotta-roof-tiles/