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Sonia Surlej is a Building Envelope Consultant. Sonia is an architect specializing in building envelope investigation and remediation design. Her expertise lies with investigating the causes of water infiltration including destructive and non-destructive testing methods. She incorporates the use of standard methods for water testing, infrared thermography and moisture testing, where appropriate, as tools to determine the causes for water infiltration. She provides assessments so that building owners can take informed and justified actions in their response to what can be an ongoing issue. She is responsible for preparing reports, repair construction documents, bidding assistance and construction administration services and can also provide preventative maintenance recommendations.

With a knowledge based in restoration and repair, she assists Architects, Owners and General Contractors during new construction as the Building Envelope Consultant for the purposes of Quality Control and Building Envelope Commissioning.  She completes “peer reviews”, mock-up recommendations and quality assurance site visits. She provides the design team with valuable infield experience and technical knowledge in the areas of window, cladding, roofing and waterproofing in order to uphold building envelope performance and prevent costly air and water infiltration issues. She can also recommend and perform in-field quality assurance tests during construction to meet different performance standards.


Bachelor of Art in Architecture, University of Illinois at Chicago


  • Chicagoland Women in Roofing
  • Building Envelope Council – Chicago
  • Building Enclosure Commissioning Process Provider (BECxP)
    Accredited Commissioning Authority + Building Enclosure (CxA+BE)




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