Additives Manufacturers' technical support and/or product sheets can answer your questions regarding performance or application of proprietary products.
Custom Building Products Phone: (800) 272-8786
MAPEI Corporation Phone: (888) 356-2734
SGM, Inc. (SGM, Inc. (Southern Grouts and Mortars)) Phone: (800) 641-9247
If your question is still unresolved, you have several choices to explore other means of technical support.
Situation May Require an On-Site Inspection to resolve the problem.
Installation May Require Sample Testing
Questions Regarding Handbook Guidelines or American National Standards