There are many sources to check with, concerning the long term quality of performance and application. Please contact us for a list of contacts.

We have a been a member of the "Better Business Bureau" for over 10 years. Members of "Built Green" and the "U.S. Green Building Council"

Better Business Bureau, Pcs Coatings:  http://www.bbb.org/western-washington/business-reviews/waterproofing-contractors/pcs-coatings-in-auburn-wa-27027781