Business Details
42 Years
experience
Emergency
services
Trusted Building Enclosure Consultants
Wetherholt & Associates has provided expert consulting in roofing, waterproofing, and building enclosure solutions since 1984. Our team of seasoned professionals brings decades of focused experience to deliver unbiased, tailored recommendations for commercial, institutional, and residential projects. With a commitment to integrity and technical excellence, we prioritize client needs through rigorous inspections, forensic analysis, and stakeholder collaboration. Our independence ensures objective guidance that aligns with economic viability and sustainability goals. Recognized as industry leaders, we maintain active roles in professional organizations like IIBEC while staying at the forefront of technological advancements in building science. Trusted by government agencies, educational institutions, and private clients, our track record demonstrates consistent delivery of durable, code-compliant solutions.We invest in continuous education for our staff and maintain partnerships with manufacturers to ensure up-to-date expertise on all roofing systems. Our comprehensive approach covers every project phase from initial design review through final construction documentation. With offices in Redmond, Washington, we serve clients across the Pacific Northwest, Alaska, and Hawaii, addressing complex building enclosure challenges with proven methodologies. Our dedication to transparency and technical precision has solidified our reputation as a reliable partner for building envelope consulting nationwide.
Services
Roofing Inspection
Building Enclosure Consulting
Waterproofing Analysis
Forensic Leak Investigations
Construction Monitoring
Building Envelope Design Review
Moisture Testing
Drone Imaging Assessments
Details
- Year established: 1984
Highlights and features
- We offer over 40 years of specialized experience in building enclosure systems
- Our team holds multiple registered certifications through IIBEC and RCI programs
- We maintain active industry leadership roles and continuous technical education
- Our forensic analysis utilizes advanced technologies like thermal imaging and drone imaging
- We provide 24/7 inspector availability during construction projects
Associations and certifications
- IIBEC
Services
Roofing Inspection
Our roofing inspection service provides detailed evaluations of commercial and residential roofing systems. Utilizing thermography, moisture meters, and drone imaging, we identify vulnerabilities in roof membranes and flashing. Clients receive actionable reports with repair recommendations and maintenance schedules to prevent water intrusion and extend roof lifespan.
Building Enclosure Consulting
We offer comprehensive building enclosure consulting from design through construction. Our experts review architectural drawings, specify waterproofing systems, and develop air barrier strategies. Clients benefit from independent guidance that prevents costly moisture-related failures in wall assemblies, windows, and foundation connections.
Waterproofing Analysis
Our waterproofing analysis identifies and resolves moisture intrusion issues in plaza decks, foundations, and window systems. Using RILEM tube testing and electronic breach detection, we pinpoint deficiencies in waterproofing membranes. We develop customized remediation plans that meet code requirements while minimizing disruption to building occupants.
Forensic Leak Investigations
We conduct forensic leak investigations using thermal imaging and water testing protocols. Our systematic approach traces water intrusion paths through complex building envelopes. Clients receive detailed failure analysis reports documenting the root cause of leaks in roofs, walls, and seismic joints to inform permanent repairs.
Construction Monitoring
Our construction monitoring ensures proper installation of roofing and waterproofing systems. Certified inspectors verify compliance with project specifications during critical phases. Clients receive regular field reports documenting installation quality, with immediate notification of non-conformances requiring correction to prevent future performance issues.
People
Ray Wetherholt
Founder & Consultant
Founder of Wetherholt & Associates with over 40 years of roofing expertise. Licensed Professional Engineer in four states, author of technical papers, and former instructor for industry courses on waterproofing systems.
Don Davis
Managing Principal
Senior field engineer with 30+ years of experience since joining in 1993. Registered Building Envelope Consultant specializing in commercial roof assessments and forensic investigations across the Pacific Northwest region.
Mike Caniglia
Principal
Certified roof consultant with 20+ years of experience. University of Washington graduate specializing in leak investigations and moisture testing for institutional and government building projects throughout Washington state.
Jose Laurean
Principal
North Seattle College graduate with 20+ years of field experience. FAA-certified drone pilot specializing in high-end residential waterproofing and complex cladding system evaluations across the Pacific Northwest.
Pravat Sripranaratanakul
Principal
Senior field engineer since 2003 with expertise in public school waterproofing projects. Former president of the Puget Sound Chapter of IIBEC, specializing in moisture testing and specification preparation.
Questions
What building types do you consult on?
We work on commercial, institutional, residential, and government facilities including schools, hospitals, office buildings, and public infrastructure projects.
Do you provide emergency leak services?
Yes, we offer 24/7 emergency response for urgent water intrusion issues affecting building operations or safety.
What areas do you serve?
While based in Washington, we serve clients throughout the Pacific Northwest, Alaska, and Hawaii for building enclosure consulting needs.
Are your consultants certified?
All senior staff hold multiple industry certifications including IIBEC registered roof consultant (RRC) and registered waterproofing consultant (RWC) designations.
Can you assist with construction disputes?
Yes, our team provides forensic analysis and expert testimony services for roofing and waterproofing issues in construction litigation matters.
