This may seem like a stupid question, but I am working on a project that has porcelain wall tile being installed in bathrooms and I'm not sure how this is supposed to be listed under IEQc4.1. They are using mortar and sanded grout to install the product. Technically, they are ceramic tile adhesives, but they are not being installed on the floor, so they should go on the non-flooring adhesives and sealants section of the form, right? Does anyone know what adhesive the mortar and grout should be listed under. Any help on this would be greatly appreciated.