What areas do you serve for earthquake retrofitting?

Evergreen Seismic serves Seattle, King County, Snohomish County, Skagit County, Island County, and Pierce County, WA. This includes Seattle, Everett, Tacoma, Bellevue, Kent, Renton, Lynnwood, Marysville, Mount Vernon, Anacortes, Oak Harbor, and surrounding areas.

Do you offer free consultations?

Yes, we provide free assessments in Seattle and most north-end areas. Contact us at (206) 984-2580 or schedule online for a free consultation.

Are you licensed and insured?

Yes, Evergreen Seismic is licensed, bonded, and insured. Business Lic #EVERGSL823JF. We have over 18 years of experience in seismic retrofitting.

What services do you offer?

We specialize in earthquake retrofitting, foundation repair, wood rot repair, and seismic gas shut-off valve installation for residential and commercial properties.

When was Evergreen Seismic founded?

Evergreen Seismic was established in 2018 by owner Matt Robinson, who has over 18 years of experience in seismic retrofitting and 22 years in general construction.

What is included in seismic retrofitting?

Our seismic retrofitting includes anchor bolts, shear panels, shear transfer ties, and hold-downs to address racking, sliding, and overturning forces during earthquakes.

Understanding the Mechanics of Earthquake Gas Shut-Off

When it comes to earthquake safety, an earthquake gas shut-off system is one of the most effective ways to reduce the risk of fire or explosion. These valves are designed to stop the flow of natural gas automatically when seismic activity or sudden leaks occur. Our team specializes in installing these systems so homeowners and business owners can focus on staying safe during an emergency.

Motion-Sensing Shut-Off Valves

One common type of earthquake gas shut-off is the motion-sensing valve, often called a caged ball valve. This device is triggered by strong shaking. Inside the unit, a small metal ball is held in place within a cage. When an earthquake occurs, the ball shifts due to the movement and blocks the gas line. This stops the gas supply immediately and prevents dangerous leaks that could ignite.

Motion-sensing valves are especially effective in regions with frequent seismic activity because they respond directly to the shaking itself. Once triggered, the valve must be reset by a professional to ensure that the gas system is inspected before service resumes.

Excessive-Flow Shut-Off Valves

The second type of earthquake gas shut-off is the excessive-flow valve. Unlike motion-sensing valves, these detect sudden surges in gas flow. For example, if a pipe breaks during an earthquake, gas escapes rapidly. The valve responds by closing, which halts the flow and minimizes the risk of fire.

Excessive-flow valves are an important layer of protection because they react to the result of damage, even if the shaking itself was not enough to trigger a motion-sensing unit. They provide coverage in scenarios where structural damage leads to broken lines.

Combining Both Systems

For the highest level of safety, many property owners choose to install both motion-sensing and excessive-flow valves. Used together, they address both direct seismic shaking and the possibility of leaks from ruptured lines. Our professional installation ensures these systems are correctly fitted, tested, and maintained.

Earthquake safety requires preparation, and installing an earthquake gas shut-off system is a smart step to protect lives and property. Call us at Evergreen Seismic at (206) 984-2580 to schedule a consultation for earthquake gas shut-off in Mukilteo.

B Snead

I came to know that my house was vulnerable to seismic events so I did some research on how to lessen the risk. The things it seemed I needed were things I didn't want to do myself so I looked around for a vendor and came upon Evergreen Seismic. Matt came out and looked at my house and recommended mediation that was almost exactly what my research had indicated and explained the technology in terms of my particular situation, which was appreciated. He even explained other steps he didn't think were needed, which he probably could have talked me into. I appreciated his honesty and knowledge. We scheduled the work and he did exactly what he said he'd do. I would recommend Matt and his company to anyone.

Warner Asch

We had a fantastic experience with Evergreen Seismic. From the initial estimate through the completed retrofit, everyone we worked with was professional, responsive, and easy to communicate with. Matt was especially great to work with—he took the time to answer our questions, explained the process clearly, and made us feel confident every step of the way. We never felt pressured and always felt like we were in good hands. The crew was punctual, respectful of our home, and completed the work efficiently while keeping the area clean and organized. We also chose to have an automatic seismic gas shutoff valve installed, and they made sure we understood how it worked before they finished. Our home was built in 1959, so it gives us real peace of mind knowing it has now been properly seismically retrofitted. The quality of the work and customer service exceeded our expectations. Thank you, Matt, and the entire Evergreen Seismic team! We highly recommend Evergreen Seismic to anyone looking for a knowledgeable, trustworthy, and professional company.

Blaine Robbins

Matt did a seismic retrofit for us recently. He was communicative and responsive throughout the entire process and did fantastic work, often going above and beyond what was necessary. I would highly recommend for anyone thinking about doing a retrofit.

Jonathan Glick

I'm very happy with the seismic retrofit work Evergreen Seismic did at our home. They were clear about the scope of work and reasonably priced compared to other providers. Matt and Phil were a pleasure to work, worked around our schedule, and got the job done quickly. They work with a well-known engineering company so I'm confident the work meets a high standard.

Alex

Matt & Phil did an absolute fantastic job seismically retrofitting our home. There were several stages in the process where the team went well above and beyond what was required. Generally it is hard to find Contractors you can trust and Evergreen Seismic is absolutely among the few that you could trust to do a great job!

Brian Moynihan

Matt and Phil went above and beyond on the seismic retrofit of our 1919 home. They repaired some rot that was discovered during the process, and still got the project done within the estimated number of days. They also replaced some questionable posts and strengthened a compromised beam - things that other contractors did not include in their bid. Very reasonably priced.

Beck Royer

Excellent professional and a knowledgeable company! Matt was prompt, and helped us with an insurance renewal and on site visit!! Great all round and honest Beck

Cameron Skaggs

Matt and his team were very professional. He helped explain the process and was very transparent with everything. They worked quickly too. I'd recommend them unhesitatingly to anyone looking to retrofit their house for earthquakes

Jaymes Dee

Matt and his team were beyond helpful during our journey to seismic retrofit our 1953 home. At first I was certain I would be doing the retrofits and Matt was gracious enough to come and venture through my crawlspace with me and give me pointers. When life and all of it's entanglements got in the way, Matt and his team were able to knock out the work expeditiously for a very reasonable price. My family and I feel safer because of the work they did. 10/10 recommend.

Erik Peterson

I can't say enough great things about Evergreen Seismic. If I could, I would give them 6/5 stars! Matt was such a pleasure to work with. He was so knowledgeable, patient, responsive, generous with his time, and such a resource. He explained complicated topics into basics I could understand, and also adjusted his approach based on some constraints we had. If you are looking to do any kind of seismic retrofit for your home, you should reach out to Matt and his team at Evergreen Seismic. Just...wow. So refreshing to work with some true professionals.