Contact Us

Seattle Office Phone - (206) 768-8324
Mailing address is
PO Box 3633 Seattle, WA 98124-3633

Portland Office Phone - (503) 475-0822
Mailing address is
PO Box 19239 Portland, OR 97219

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Mark Hagerty - President
Email -
Cellular - (206) 391-8751

A graduate of the University of Washington (BA Business), Mark has worked in construction since 1985. The first 16 years were on the supply side with a local distribution company, focusing on sealants and waterproofing products.  This is where he learned and came to understand the importance of the “technical” aspect of the products that we use today.  He opened Technical Waterproofing, Inc. in June, 2001, with the main focus on sealants and above grade waterproofing.  Since its inception, it has evolved into a full service waterproofing company with projects ranging from new construction to historical renovation.

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Brandon Karimi-Naser - Vice President
Email -
Cellular - (206) 501-7871

Brandon has always been fascinated with building architecture and design as well as the actual construction of them. This passion drove him to study construction management at the University of Washington before coming to work for Technical Waterproofing, Inc in 2010 as a project engineer. Brandon is now a Vice President and responsible for managing projects as well as coordinating field operations.

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Andy Schmidt - Vice President
Email -
Cellular - (206) 303-8030

Andy is a Vice President at Technical Waterproofing and oversees the waterproofing and façade restoration side of the business. After graduating college in May of 2000, Andy was introduced to the waterproofing industry through obtaining a sales role at a local material supplier.  There he learned important product knowledge and proper application techniques on a wide variety of waterproofing materials.  From there he took this information and experience into project management positions for specialty waterproofing contractors.  Andy takes pride in solving complex building issues and extending the life of building structures.

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Tony Lieder - Branch Manager (Oregon)
Email -
Cellular - (503) 475-0822

Having grown up in a family of stone masons, Tony has been involved in construction his entire life.  With a degree in construction management and over 20 years of experience in the construction industry, the last 15 years have been focused exclusively in the specialty contracting field of waterproofing and building envelope restoration.  Through hard work and the pursuit of practical solutions to building envelope issues, Tony’s career has taken him from stone mason, to project engineer, to superintendent, to senior project manager, to Oregon branch manager.

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Louis Fox - Project Manager
Email -
Cellular - (206) 619-0432

After graduating from Washington State University with a degree in Civil Engineering, Louis began his career working on large heavy-civil construction projects in his hometown of Los Angeles, California. As an outdoor enthusiast, Louis returned to the Pacific Northwest in 2016, where he worked for a General Contractor and gained exposure to a multitude of commercial construction projects. His background has exposed him to a variety of different sites from large-scale high-rise construction to small interior/exterior remodels. Louis became part of the Technical Waterproofing team in Fall of 2018 and brings a diverse set of skills with him to the Seattle, Washington branch.

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Mickey Williams - Estimator
Email -
Cellular - (206) 391-0729

Mickey has worked with Technical Waterproofing since 2005 as an estimator. He has worked in the construction business most of his career from all aspects of building and design.  With several years in the interior design industry and a degree in Computer Aided Drafting and Design as well as Visual Studies, he has used those skills to bring Technical Waterproofing into the future with a mix of technology and efficiency.


Shane Paullus - General Superintendent
Email -
Cellular - (206) 391-0365

Starting in 1996 as an apprentice mason, Shane began his career in the Northwest learning masonry, waterproofing, and construction practices. With a background in welding as well as foreman for several subcontractors, he came to Technical Waterproofing, Inc. to be a Superintendent in 2017.


Virna Dixon - Project Assistant
Email -
Cellular - (209) 403-9818

Virna is the Project Assistant who works with the President and Project Managers with all things administrative and accounting.  She has been with Technical Waterproofing, Inc since Fall 2018 and appreciates being part of a well-built team.  With over 15 years experience in the construction industry, ranging from new home construction to civil and mechanical engineering, Virna’s focus has been in accounting and project management support.  Originally from California, Virna is enjoying her new journey in Washington.