Early Testing: A Key to Airtightness April 13, 2017

In 2015, the Seattle Energy Code saw increased strictness in airtightness requirements with the maximum allowable leakage rate shifting from 0.4 to 0.3 cfm per square foot. That may not seem significant at first glance, but consider this: as of this post, multifamily buildings tested by RDH had a 92% pass rate at 0.4 cfm […]


Oregon College of Oriental Medicine March 24, 2017

With a damaged masonry façade, active leaks, and corroded steel lintels, this historic building required a complete retrofit and seismic upgrade before it could be occupied.Find out how RDH provided solutions to repair the enclosure and improve building performance.


Client Perspective

“When you look at the quality of the work that was done, there's no doubt that we did the right thing, and we chose the right people to do it.”