About CBM

Our History

Formerly known as Christopher B. Miller Company, CBM has been in business for over thirty years, serving Maryland, Delaware, Pennsylvania, Virginia and Washington, D.C. We specialize in waterproofing, expansion joints, air barrier, and joint sealants. We are certified by the Air Barrier Association of America.

Standing Behind Our Work

Our industry reputation means everything to us. As a result, we always stand behind our work. Our policies ensure the quality performance you expect and the services you deserve.

Our Services



Traffic Coating

Fire-Rated Sealants

Expansion Joint Systems

Air & Vapor Barrier Systems

In-Progress Projects

Completed Projects

Horseshoe Casino

Waterproofing, Expansion Joints, Air Barrier

Suburban Hospital Garage

Waterproofing, Expansion Joints, Traffic Coating

Anne Arundel Medical Center

Expansion Joints, Joint Sealants

Green Spring Station III

Waterproofing, Air Barrier, Joint Sealants

MD Live Casino & Hotel

Waterproofing, Expansion Joints, Joint Sealants

The Berkleigh at Greenleigh

Waterproofing, Expansion Joints, Air Barrier

Looking for more information? Want to request a quote? Call today for a no-obligation cost analysis.