Terra-petra WATERPROOFING DIVISION
Since our inception in 2002, the Terra-Petra Waterproofing Division has grown into a premier authority on building envelope systems. We provide developers, architects, and contractors with a comprehensive, science-backed approach to complex moisture management.
Rather than operating as standard consultants, we serve as a single point of contact for the entire lifecycle of the building envelope—seamlessly integrating proactive design consulting, rigorous QA/QC field testing, and advanced forensic leak diagnostics.
As building assemblies become more complex and the financial risks of water intrusion escalate, our clients require more than just basic visual inspections. They need defensible data, actionable remediation plans, and independent oversight. Terra-Petra has continuously evolved our capabilities to meet these high-stakes demands, ensuring our clients receive elite technical support from pre-construction through project completion and, when necessary, into the courtroom for litigation support.
By deploying certified inspectors and highly specialized building science experts, Terra-Petra delivers the exact precision required to mitigate liability and protect structural integrity. Whether validating architectural mock-ups, securing manufacturer warranties, or pinpointing the root cause of a complex membrane failure, we provide the elite, independent oversight necessary to ensure your building envelope performs flawlessly.
INTRODUCTION TO OUR COMPANY
Our Services
Comprehensive Waterproofing Expertise to Mitigate Risk and
Ensure Performance Across the Entire Building Lifecycle

Building Envelope Consulting
Preventing failures and costly errors before construction

Forensic Waterproofing & Leak Detection
Detection of water intrustion root cause + failure diagnostics

QA/QC + Air & Water Testing
Verifying real-world performance of the entire building envelope
CLIENT TESTIMONIALS
“Working with Terra-Petra has been a pleasurable experience and we look forward to further our mutually beneficial partnership as we move on to our next phases of development. We confidently recommend Terra-Petra as a solid “go to” consultant who will deliver positive and tangible results at reasonable rates.”
Derek Fraychineaud
Vice President, Residential Development
Playa Capital Company, LLC
Playa Vista, CA
“Terra-Petra has provided excellent service for us on our City of LA environmental services contract. Their high-quality work has been praised by the reviewing agencies and reflects very well on us. In today’s market, government budgets are very tight and Terra-Petra has brought excellent value to our clients and has kept change orders to a minimum. “
Carl Damoude
Design Manager
ET Environmental Corporation, LLC
Portland, OR
“Terra-Petra was great to work with and was very involved from beginning to end. The fact that Terra Petra is located in California and was able to work on a project located in Detroit Michigan, while ownership was in Denver, was very impressive. Terra-Petra has the flexibility and dedication to do things right. “
Ron Skelton
Monarch Investment & Management Group
Franktown, CO
FEATURED PROJECTS
Case studies of Complex Projects
Get a look into some of our featured projects, the challenged and risks faced, Terra-Petra’s solutions, and the outcome of the project. View More Case Studies