Have a question? Call our experts at 1-800-NATIONAL® for help with your gypsum-based material inquiries.

A free phone call from anywhere in the U.S. and Canada puts you directly in touch with National Gypsum's database of current technical information.

Have a unique situation or application involving gypsum-based materials?

Call 1-800-NATIONAL® (1-800-628-4662),
8 a.m. - 4:45 p.m. EST,
Monday-Friday, or E-Mail Your Questions.

Whether it's a question about specifications, code regulations, product usage or installation, the 1-800-NATIONAL® Technical Assistance hotline offers help from these experts:

Mark Chapman, CSI
Mark came to 1-800-NATIONAL® from our Research Center where he spent years developing and testing National Gypsum construction systems. As a Research Engineer, Mark has extensive knowledge in the structural, fire and sound characteristics of our products and hands-on experience in commercial and multi-family construction.

Tony Fuller, CSI, CDT, LEED Green Associate
Tony came to 1-800 NATIONAL® with 18 years experience developing new products for contractors and other construction professionals in the hand and power tool industry. He has extensive experience in a wide variety of building materials and construction techniques including jobsite experience in both residential and commercial construction.

Lisa Roberts, CSI, LEED Green Associate
Lisa entered the building materials industry as a trader for a major buy group where she gained extensive knowledge in gypsum, insulation, foam insulation, cement and other building products. Subsequently, she has been instrumental in product training for new employees. Lisa is well versed in LEED Rating Systems.

For more information on 1-800-NATIONAL®, click here (PDF 228 Kb).