Ellsworth is a 10-story mixed-use residential development located in Vancouver’s Mount Pleasant neighborhood. The building includes 89 residential suites with 7,000 square feet of street-level commercial space and a vegetated terrace on its inverted roof. Like many new buildings in Vancouver, the building was designed to achieve LEED certification.

Our team provided building enclosure consulting services for this project, from the early stages of schematic design, design development, and construction documents, to field review and post‑construction review.

The project used a relatively common window wall design for the façade, but the building’s stacked box appearance combined with numerous decks and balconies created complex detailing which required particular attention from our team. We performed thermal modeling to assess the condensation risk of the window installations and conducted water penetration testing to facilitate the use of an innovative heat recovery ventilation (HRV) strategy for the building. For the wall and soffit areas that were not part of the window wall system, we used a thermally broken cladding system to help achieve the thermal performance in support of the building’s energy performance objectives.

Ellsworth was completed in 2018 and became LEED Gold certified in April 2020. Our team’s post‑construction review of the building revealed the enclosure is performing as predicted.


May 29, 2020


Chard Development


MCM Architects

Our Role:

Building Enclosure Consultant

Key Services

Concept Review
Construction Document Review
Field Review

Before material and systems selections are finalized, our clients benefit from a review of the building enclosure design strategies at a conceptual level. This review provides an opportunity to reflect upon the performance expectations and fundamental building science strategies behind the selection of appropriate solutions. Experience shows that changes made at the conceptual stage of building enclosure design have far greater cost-to-benefit impact than those made during late design or construction. A typical concept review considers the following:

  • Environmental loads
  • Energy performance targets and compliance options
  • Life cycle expectations
  • Constructability, sequencing, and complexity of detailing
  • Structural support
  • Risk analysis

Lorne Ricketts | M.A.Sc., P.Eng.

Regional Director – Canada West, Building Science Specialist
View Bio


Oakridge is a redevelopment project that will turn an existing mall on Vancouver’s west side into a new mixed-use civic hub.

Read More

Ponderosa Commons

The Ponderosa Commons complex on the UBC campus in Vancouver is one of the many innovative projects our team has partnered on with the University.

Read More
RDH Building Science