AwardWinner OscarWarmerdam

Corporate Leadership Award

Outstanding Business Leadership

Oscar Warmerdam is the President of Sempergreen USA and a long-time supporter of the development and advancement of the green roof industry. For years Oscar provided guidance on the Green Roofs for Healthy Cities Board of Directors, and served an advisor on policy and corporate member initiatives.

In 2016 he served as the co-chair of the CitiesAlive Local Host Committee as well as the chair of the inaugural Stormwater Technical Workshop Committee.

With Sempergreen’s new Purple-Roof concept, Oscar has championed the development and distribution of stormwater performance testing methods for green roof assemblies to improve the recognition of green roofs as a stormwater best management practice.

Green Infrastructure Design Charrette

About Green Roofs

by Steven Peck
GRHC founder/president

Want to Receive GRHC News?

emailIcon50Get updates including a free digital subscription to the Living Architecture Monitor.
Click Here

Become a Green Roofs Member

grhc logo80Join our growing community...

Click Here

Green Infrastructure Store

GIS Logo80Your source for manuals, proceedings, books, and more.
Click Here

The Rise of Living Architecture Book

coverimage110Order your copy of The Rise of Living Architecture Commemorative Edition
and learn from over 50 experts in the green roof and wall industry.

Green Roof Policy Brochure

World Green Infrastructure Congress


Living Architecture Monitor Magazine

LAM Spring 2017 cover