Seal Engineering

At Seal Engineering, Inc., we are a civil/structural engineering company dedicated to providing professional services related to roofing, waterproofing, and building enclosure design and consulting. Our mission is to provide quality engineering services focused on preventing and eliminating moisture migration into existing and new buildings while balancing system reliability and longevity with sustainability considerations. We are headquartered in Alexandria, Virginia, and have a strong presence in the Metropolitan Washington, DC area, as well as projects throughout the mid-Atlantic region.

Our Expertise

As a specialized civil/structural engineering company, we have over 40 years of experience in providing expert services related to roofing, waterproofing, and building enclosure design and consulting. Our team of experienced professionals has completed over 5,000 investigations and designs, including many on landmark and historic buildings such as the White House, the Lincoln and Jefferson Memorials, the Pentagon, various House and Senate office buildings, the Supreme Court, the Library of Congress buildings, and several Smithsonian Institution museums and most of the Federal Triangle buildings.

Our Services

Our services include:

• Investigation & Reports: We provide comprehensive investigations and reports to identify potential issues and defects in building enclosures and their components.
• Design Services: We offer design services for new construction, retrofitting, and renovation projects, focusing on waterproofing and roofing systems.
• Design Review and Assistance: We review designs and provide assistance to ensure compliance with building codes, regulations, and standards.
• Bidding Phase Services: We provide bidding phase services, including bid document review and assistance with bidding and negotiation.
• Construction Phase Services: We offer construction phase services, including construction administration, site inspections, and monitoring.
• Design-Build Services: We provide design-build services, which integrate design and construction services for a seamless experience.

Our Projects

Our portfolio includes a wide range of projects, including:

• Roof replacement and reconstruction
• Waterproofing and flashing installation
• Facade restoration and repair
• Dome restoration and reconstruction
• Skylight and roofing system replacement
• Building envelope design and consulting

Our Clients

Our clients include a wide range of federal, state, and local government agencies, as well as private clients such as condominiums, universities, schools, and commercial property owners.