Chinook Roofing Blog

‘Pollution-Eating’ Roof Will Top University of Pittsburgh Building

Posted on: September 30, 2014

green roofs

The University of Pittsburgh’s Posvar Hall will be the first building on campus to sport special “green” roofing membranes.

Here at Chinook Roofing & Gutters, we love keeping up with the latest innovations in roofing technology. Recently, we saw the green roofing movement push ahead once more with the addition of an innovative roofing material on a university building on the other side of the country.

A Pollution-Eating Roof Product

This fall, the University of Pittsburgh’s Posvar Hall will be outfitted with a new roofing material called Eco-Activ Waterproofing Holder that reportedly “eats pollution,” according to the University Times. The material, manufactured by Siplast, is a membrane covered with mineral granules which essentially break up certain air pollutants, rendering them harmless, the article explained. Here’s a summary of this cool roofing story, according to CBS Pittsburgh:

  • The roofing product is designed to pull nitrogen oxide out of the air. This pollutant results from the burning of fossil fuels, such as vehicle emissions, coal plants, etc.
  • The Eco-Activ roofing treatment works by converting nitrogen oxide from a gas to a solid. The sun’s UV rays are used to activate this process and rain washes away the harmless, nontoxic residue that is left over.
  • The university’s sustainability coordinator believes the new roofing treatment could pull approximately 200 vehicle emissions out of the air.
  • While Eco-Activ is primarily applied to commercial structures right now, it could also be applied to residential homes.

Siplast’s online brochure explains the technology behind Eco-Active roof membranes in greater detail.

About Chinook Roofing

Chinook Roofing & Gutters is a Tacoma roofing company that provides installation and maintenance of roofs and gutters in Puget Sound area cities, including our home base of Fife, as well as Gig Harbor, Puyallup, Milton and more. We are experienced with a wide variety of roofing types, including composition roofs, cedar shake roofing, metal roofing and more. Our gutter installation services are provided by knowledgeable, factory-trained gutter professionals. Contact us today for a free estimate.

(Photo via

Leave a Reply

Your email address will not be published. Required fields are marked *

Have Questions?
Call 855-424-4666


The only thing better than our new roof is the company who installed it. Kind and capable people from the inspection and estimate to impeccable clean up. Thank you so much!