Microcement is a decorative layer at just 3mm thickness therefore any movements and defects in the substrate can cause the microcement to crack or delaminate. Repairs can be carried out but generally the substrate is what needs attending to first. Although microcements are extremely tough, their 3mm thickness will not be able to stop the movement of considerably thicker substrates such as walls and floors. A thin microcement layer piggy backs compressive strength from the substrate underneath. For example, take a playing card in your hand, you can freely bend the card with your fingers. But place the same card onto a table top and you can no longer bend or dent the card. The card has now been made rigid and hard like the table top. Microcement is extremely durable and can remain intact for a very long time if it has been made on a stable and load-bearing substrate.