Techo-Bloc is one of the many products that I insist upon installing.
You can visit Techo-Bloc's website at http://www.techo-bloc.com.
Distributors:
SiteOne Landscape Supply - https://www.siteone.com/
East Haven Landscape Products - East Haven CT - http://ehlp.com/
Superior Stone & Landscape Supply LLC - Hamden CT
New Haven Masonry & Building Supply - New Haven CT