Enclosures & Structures

Ensuring the Highest Performance for Your Enclosure, Structure and Facade

Enclosures & Structures

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Confidence in Your Building’s Future

With complexity and risk on the rise in the construction industry, designing and constructing a high-performance building enclosure is essential. Lerch Bates brings 35 years of expertise to your team, focusing on enclosures & structures for moisture-air-thermal-vapor control. As one integrated source, we partner with our clients to provide realistic yet transformative solutions to whatever the challenges are that lie ahead.

Lerch Bates provides collaborative, responsive and seamless enclosure design, consulting, commissioning and façade access consulting that is specifically tailored to support the full lifecycle of your real estate assets. Our core service offerings include:


Enclosure Design & Consulting

 – Realize your most ambitious enclosure architectural visions with our experience on 2,000+ completed projects in 20+ countries around the world. We specialize in all aspects of building enclosure from roofing, cladding and curtain wall/glazing assemblies to below grade and horizontal waterproofing (plaza and green roof). Plus, our services include design assistance, material applications, procurement, construction support, quality assurance and testing/verification.

Facade Access Design

As a world leader in facade access design for nearly 40 years, we set the standard for innovation in exterior building maintenance equipment systems. Our expertise ensures that façade access systems are competitively bid in the marketplace, eliminating the need for sole-sourcing proprietary products from a single manufacturer.

Asset Preservation

– From initial assessments to oversight of enclosure & structural repair and remediation, or cladding or roof replacement projects, Lerch Bates provides the technical expertise your asset requires. Our in-house architects & engineers specialize in capital planning and recommendations that will extend the life of your asset. Put the time and stress burden of these projects on Lerch Bates with our delivery of design documents, oversight of contractor bidding and construction administration, and quality assurance services.

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Enclosure and Structure Expertise for Every Stage in the Life of Your Building



  • Enclosure Design (1st or 3rd party)
  • Facade Access Design
  • Technical Peer Reviews – Enclosure and Structural Systems
  • Roofing and Waterproofing Consulting
  • Curtain Wall Design and Consultation
  • Building Enclosure Commissioning (BECx)
  • Material Reviews and Mockup Design Assist
  • 2-D Thermal Modeling (THERM) and Hygrothermal Analysis




  • Building Enclosure Commissioning (BECx)
  • Bid Document Preparation & Management
  • Subcontractor Submittals and Shop Drawing Reviews
  • Preconstruction Meetings and Training Seminars
  • Construction Quality Assurance Observations
  • Field Performance Testing
  • Construction Administration and Issues Tracking
  • Verification Plans and Quality Checklists
  • Test & Commission:
    • ASTM E779 Air Barrier Testing
    • ASTM E1105 Water Penetration Testing
    • ASTM E783 Air Infiltration Testing
    • AAMA 501.2 Water Spray Testing
    • AAMA 502 and AAMA 503 Chamber Testing
    • ASTM D7877 Electronic Leak Detection Testing
    • Diagnostic Water Spray Testing
    • Infrared Thermography & Diagnostics




  • Capital Planning and Deferred Maintenance
  • Enclosure and Roof Asset Management
  • Warranty and Maintenance Observations
  • Pre-Purchase Due Diligence
  • Operations and Maintenance Manuals and Training
  • 3D Imaging Using Matterport
  • Fall Protection
  • Owner’s Representation/Project Management



  • Forensic Engineering
  • Diagnostic Field Testing
  • Property Condition Assessments
  • Roof and Enclosure Assessments
  • Non-Destructive Evaluations
  • Ground Penetrating Radar
  • Heavy Demolition, Implosion, or Construction Activity Vibration Monitoring
  • Structural deterioration or failure
  • Structural damage from storms or vehicle impact
  • Structural engineering design and construction administration of repairs, if required


Repair + Modernize

  • Property Condition Assessments/Diagnostics
  • Design – Concept through Construction Documents
  • Enclosure and Structural System Restoration or Replacement
  • Thermal Efficiency Analysis
  • Structural Restoration
  • Historical and Masonry Restoration
  • Bid Phase Management
  • Construction Administration
  • Owner’s Representation/Project Management

“Lerch Bates’ support has made our project outcomes more successful and predictable. It is always a pleasure to work with this team and the peace of mind it brings knowing that things will be done correctly.”