Recent achievements
Oct, 2014
by admin - News - read more
Sister companies Air-Ins Inc. and Patenaude Trempe Van Dalen Inc. (PTVD) are not new names in the field of building science, but their decision to reb (...)
Jul, 2014
by admin - News - read more
Patenaude Trempe Van Dalen and Air-Ins, two sister companies working in the building-envelope field, will be united from now on under a single brand i (...)
In their own words
Anik Shooner
Architect, MSDL
A collaboration that aims for excellence
Our professional relationship has always been based on collaboration and the achievement of excellence, starting back to the mock-up testing for the canadian space agency in early 1990, numerous building envelope studies and field tests throughout the years, and most recently in our common efforts in securing the leed durable building credit.

Welcome to the new CLEB