Efficient strategies for high performing buildings.

As an integrated practice of engineers, architects and specialists, our team has pioneered many aspects of the building science field. We bring more than 40 years of proven experience with nearly all types of buildings and their respective building envelope systems, assemblies and components.

Our goal is to enhance building design by optimizing envelope performance for durability, resiliency, energy efficiency and occupant comfort. We provide total solutions through cost-effective, proven strategies that extend throughout the life of a building.


building science


in building science


of the largest
private, full-scale wall + window testing facilities


facility for dynamic
wind uplift testing for roofs in North America

Solutions for new and existing buildings.

For new buildings, we bring the architectural vision to functional life, while helping to attain long-term service life, achieve climate and sustainable design targets, enhance occupant comfort and wellness, and enable constructability. For existing buildings, we evaluate the performance of building envelope systems and bring specialty capabilities in repair, restoration, and renewal of façade, roofing, waterproofing and structural elements. And, as part of deep energy retrofits, our team redesigns building systems for energy efficiency and carbon emissions reduction.

We utilize a wide range of testing services, ranging from water and air leakage testing, whole building air tightness testing, thermal imaging, moisture probe testing, to fog, smoke and sonar testing.


  • New Construction Building Envelope Consulting
  • Façade Engineering
  • Roofing, Waterproofing + Traffic Topping
  • Property Condition Assessment + Capital Planning
  • Building Envelope Condition Assessment
  • Structural Rehabilitation
  • Forensic Investigation
  • Sustainability
  • Net Zero + Passive House Design
  • MEP + Building Envelope Commissioning
  • Lab + Field Testing
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Interested in learning more?
Let’s work together to explore the possibilities.

Build your career

Our experience is what differentiates us.
Explore a dynamic, rewarding career with EXP.