What is elastomeric coating and when should it be used?

Elastomeric coating is a flexible, high-build exterior coating system that stretches and recovers with the building’s movement — bridging hairline cracks in rendered facades and preventing moisture ingress through fine surface cracks. It is recommended for rendered commercial buildings prone to thermal movement and hairline cracking, particularly in Melbourne’s variable climate. Elastomeric systems provide significantly better moisture management than standard acrylic coatings and extend the repaint cycle by preventing crack-driven coating failure. Avello Group specifies elastomeric systems where the building substrate and exposure conditions warrant it, rather than as a default on all exterior projects.