Roof System Design

Investigation • Repair • Evaluation • Design

Pacific Engineering Technologies provides roof system design and planning for commercial and residential projects. We specialize in both steep and low-slope roofing systems. We also offer design for roof strengthening measures and rooftop waterproofing systems.


Roof Strengthening

A roofing system needs to be able to withstand the elements. Our roof strengthening systems ensure long term reliablility.

Roof Waterproofing

Water intrusion can cause havoc to a structure. We provide roof waterproofing systems to give you peace of mind year round.

Steep & Low Slope

There are several common roof types, each requiring special expertise. We have knowledge in both steep and low-slope roof systems.

Consider The Details

If you have a project in need of roof design and engineering services, give us a call right away.
Our roof designs include considerations for:
  • Drainage
  • Ventilation
  • Condensation
  • Insulation
  • Fire-resistivity
  • Sound transmission
  • Structural and seismic performance
  • Durability
  • Functionality

Seattle Based Engineers

Pacific Engineering Technologies primary areas of business include: investigation and repair of damaged buildings, evaluation and design of building envelope systems, and construction defect investigations. We provide structural engineering and building envelope services to clients for commercial, residential, industrial, institutional and historic projects.

Based in Seattle, Washington, we have served our clients over the years in Washington, Oregon, California, Alaska, Idaho, Montana, and Hawaii, but have also performed projects throughout the United States and Canada.

Get Started

Why Pacific Engineering Technologies?

We have an outstanding record of developing thorough and effective solutions and providing top quality services to our clients for more than 60 years. Learn more about our Company History and Meet The Team.


Investigative Level Assesment


Expert Witness Testimony


Permitting Services


Construction Phase Services


Structural Engineering Services


Architectural Services

Contact Us


2150 N. 107th Street, Suite 320
Seattle, WA 98133-9009