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John Lamb | Founder | Principal


John Lamb has been in the building science industry for over 35 years. From building coatings and sealants to construction technology, specifications and applications, John has worked in every aspect of building science; working in the field, the lab and the executive offices with architects, engineers, contractors, building owners and manufacturers to develop products, assess, specify design repair and waterproof every type of building. An Honorary member of Sealant, Waterproofing & Restoration Institute (SWRI), Construction Specifications Institute (CSI) and serves on the Building Seals & Sealants C24 Committee with American Standards for Testing & Material (ASTM), John has developed effective solutions and ensured envelope integrity for hundreds of buildings nationwide.

John Lamb Principal Structural Waterproofing Consultants Building Science Coatings Sealants Restoration SWRI Construction Specifications CSI Envelope
Eric Hoff
Eric Hoff, NCARB | Senior Architect

Eric Hoff brings over 30 years of building envelope science, design, forensic architecture, and construction management expertise to his position as Senior Architect. He has served as a building envelope and waterproofing consultant on literally hundreds of structures of all types throughout the western United States and has provided construction defect expert witness services since 1993. A Service Disabled Veteran, Eric holds architecture licenses in Oregon, Washington, Nevada, Utah and Idaho.

Eric Hoff Senior Architect NCARB Building Envelope Science Design Forensic Architecture Construction Management Envelope Expert Witness Veteran Oregon Washington Nevada Utah Idaho
Seth Callaway
Seth Callaway | Project Manager


Seth Callaway, an Atlanta Georgia native, has over 20 years of combined experience with historic masonry, carpentry, and project management. A member of the Bricklayers and allied craftworkers union for 10 years, culminating in serving as the PCC & finisher instructor at the union hall. He brings expertise in sealants, coatings, masonry restoration, and building envelope assembly integration to every project he manages. He is distinguished in having earned certifications in historic mortars and historic preservation from the IMI, Journeyman PCC, and a BFA from the Savannah College of Art and Design. 


Protecting and Maintaining Your Investment​

In today’s economic climate, risk management and protecting the value of real estate assets are the top priorities for property owners and managers.  Water intrusion can be the single most destructive factor to the structural integrity of a building.  If left unchecked, it can cause untold damage and, literally, bring a building down.


Building envelope consultants play a vital role in managing risk and sustaining a structure’s health, longevity and value. By performing forensic building envelope assessments – a complete examination of a structure’s exterior from roof to below grade – we provide an accurate professional assessment of the structure’s current condition, weatherability and susceptibility to water intrusion.  


Our core services include building envelope consulting for the design phase of new construction and existing projects, weatherproofing/ waterproofing design and consulting. "What's Wrong, Who's Responsible, What's the Scope of Repair, and How Much Will It Cost"

As a full-service firm, we work with architects, contractors and building owners on the design phase of new construction projects, as well as on the remodel or remediation of existing buildings.  We provide waterproofing consultation and plan reviews, from design development through construction documents.  We design building envelopes for new projects, design repairs for existing projects, develop repair scopes (including plans and specifications), obtain bids, oversee repairs and provide construction management services.

As independent observers of the construction phase for both new and existing projects, we ensure that all building envelope systems are properly constructed and meet manufacturers’ specifications and industry standards. Our services extend to third party assessments of exterior finishes (brick, stucco, EIFS, metal panel, composite siding), window and door installations, roofing systems, and the application of protective coatings, seals and sealants.


Our litigation support includes expert witness services and third party assessments for construction defects or premature failure.


As forensic investigators versed in proper design and construction, we are focused on the latest advances in building envelope science. Our services speak for the building.

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