3821 South Road Mukilteo, WA 98275

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(425) 348-0115


40+ Years in Business


Our Services

Commercial Re-roof Services

When Is Re-roofing Necessary?

A re-roof is necessary when an older commercial roof has reached the end of its protective qualities and is beginning to show signs of potential for leakage.

When On-going Repairs Are No Longer Enough

Ongoing repairs can increase the life expectancy of a commercial roof, but often the age of the roofing material and environmental conditions require a new roof to be installed.

The re-roofing process

The re-roofing process involves a complete tear-off of the existing roof. Our team of commercial experts can replace an entire roof without damaging the structure. Our process involves preparing the area around the existing roof, so dirt, dust, and debris to the structure are mitigated. 

Washington State Energy Code Compliance

We will work with you and verify your re-roofing project complies with the Washington State Energy Code Commercial Provisions. Sometimes more efficient roofing materials are available since the original roof installation. We will help you determine a roof system that matches our quality standards and your budget.


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(425) 348-0115

Some Signs A Roof May Need Replacing:


The Age of the Roof

Each type of roofing system has a life span. Depending on materials used, on-going maintenance program in place, drainage, and environmental details, your roof may just be getting too old to be repaired. When you look at the roof does it pass a visual inspection?


The Roof is Leaking

Water intrusion can lead damage to your structure. A leaking roof should be corrected immediately to avoid property damage. A leaking commercial roof may be a signal it needs replacing.


Staining is Visible

 In commercial buildings, you can often see the roof framing and other high-ceiling common areas. Observing water staining even if you don’t see a leak can be an indication of bigger problems.


Flashing is Damaged

Damaged flashings are caused by the drying or cracking of roof sealant around pipes, vents and other penetrations, can create openings small and large, allowing water intrusion.


Ponding is Observable

This is the excessive accumulation of water in low-lying areas on a commercial roof. When a commercial roof has poor drainage, ponding occurs near the drains or other areas where water drainage is essential. Leaks will eventually happen in ponding areas.


Delamintation is Happening

This is the separation of the laminated layers of a roofing system. If you observe seams that have become separated on an older commercial roof it may be time to replace it.


Blistering is Taking Place

This is when enclosed pockets of air or bubbles form under your existing roof because of trapped moisture inside. While these blisters are repairable, if you observed many of them it may be time to replace the roof.


Fractures are Visible

Cracks or fractures in your roofing system membrane are often a sign of a dried out roof membrane. This dehydration of a roof membrane will cause it to be inflexible to stress or roof movement. This inflexibility will result in fractures and leakage.


Granuel Loss is Obvious

Do you see roof granules piling up on your roof? Do you notice bare spots in the roof membrane? Natural Weathering or the constant exposure to heat, water, and condensation will eventually affect the physical properties of the roofing materials.



When considering the purchase of a new roofing system, a review of two separate warranties is essential. There is a manufacturer’s warranty on the products used to create the specific roofing system. This warranty will cover any defects in the manufacture of the roof membrane. You can review the entire NRCA’s consumer advisory bulletin addressing roofing warranties for helpful information. Upon project completion, your contractor should provide you with a certificate for your records.

Also, your roofing contractor will provide you with a warranty covering the labor and installation of the roofing system. This warranty will include what is covered and what is not. SQI Roofing offers a five-year warranty on all roofing installations in addition to the manufacturer’s warranty.


Let’s Get to Work


Request a Quote

Click the button below to fill out our form. We will contact you to learn about your project. When we’ve come to an agreement, we move to step two. 



With state-of-the-art technology and processes, our expert team will complete all the work necessary to install your new roof. 


Project Completed

After all necessary cleanup and inspection, you have the peace of mind of owning a brand-new roof that we stand behind and guarantee.


A Commercial Roofing Company You Can Rely On

We Proudly Provide the Following Services


New Construction

We work with major developers and architects to provide the high quality roofing new and reconstruction projects need. We have the experience necessary to provide realistic estimates and time-frames for large scale jobs.


Maintenance and Repair

At SQI, our 24-hour emergency service ensures prompt assistance for all leaks and damages. See why people count on us for comprehensive maintenance, repairs, roof cleanings, and complimentary inspections.


Re-Roofs Replacements

We are long-time licensed roof applicators forCarlisle SynTec, Versico, Soprema, Firestone, GAF, AEP Span and Bryer. These key industry leading manufactures provide the highest quality roof replacement materials.