Uncoupling mats or membranes provide air space and lateral flexibility between the tile and substrate to allow independent movement between the two. These are the newest membranes on the market. Even though there is not have an ANSI standard specific to the product, it is important that you understand where and where these products are used. To complete this course and receive a certificate, you will need to complete the online module which will take a minimum of 9 minutes and then you will be required to take a 10 question quiz about what you just learned.