Commercial Coatings and Single-Ply Roof Membranes (TPO, PVC) Performance & Appearance

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Pacific Exterior is a leading expert in Commercial Coatings and Membrane roof cleaning and provides professional commercial TPO and PVC membrane roof cleaning and maintenance service to the greater Bay Area.

Optimize your roof’s energy saving performance
Restore your roof’s appearance to ‘like new’ condition
Reduce repeat maintenance
Avoid unnecessary repairs

Performance & Appearance

Bio-contaminants such as bacteria, moss, mold, lichen and algae can diminish the performance and tarnish the appearance of your commercial roof.


Single-ply roofs are designed to be highly reflective, which is both energy and cost efficient. The above mentioned biological contaminants cause surface staining that severely diminishes your roof’s reflective capacity, which generally results in lower energy efficiency and a net higher energy bill.

A clean roof is much more efficient at reflecting the sun’s rays, which results in lower surface temperature of the membrane. A clean TPO or PVC roof membrane produces an immediate reduction in interior reflective heating. A “Cool Roof”, helps maintain a cool building  and results in energy saving for cooling costs.

Our single-ply roof cleaning methods restore your roof’s reflective capacity to like new condition and allow your roof to function at optimum design efficiency.


The same contaminants that reduce your roof’s performance also makes it look very unsightly. With so many local and even international airports around the Bay Area, many companies are concerned about the thousands of people who are viewing their facilities from above – daily – and how their roof’s appearance may reflect on their business and brand.

Safe Wash

Our approach adheres to the guidelines outlined by the CFFA (Chemical Fabrics & Film Association – the leading experts on polymer-based manufacturing). We have made a concerted effort to fine-tune our techniques over the years to ensure that you get maximum results with NO damage to your commercial membrane roof.

We do not use use high pressure or other aggressive products or techniques that are specifically prohibited by manufacturers.

Experienced Professionals

We are Licensed, Insured and Certified

(Memberships and Affiliations)

Perhaps more important than our professional affiliations is the decades of real-world knowledge and experience in roof installation and maintenance. As an NRCIA certified roof inspector and building contractor, we have both professionally installed and inspected all the materials we now clean and restore.

In 2010, we pioneered safe, non-pressure roof cleaning in Northern California. We are published experts and educators in the field of safe roof cleaning and restoration. We are uniquely qualified to clean and maintain your single-ply roof.

Commercial membrane roofs generally represent a significant investment for any business. At Pacific Exterior, we are aware of the proper cleaning procedures and products that are best for your PVC or TPO membrane roof. This includes the application of safe cleaning solutions that break down mold, dirt and algae but not compromise the integrity of the membrane.

We never use equipment, techniques or chemicals that are explicitly prohibited by the manufacturers or bad for the environment. We are committed to protecting your investment.

What Our Clients Say

We are genuine, friendly, professional and absolutely committed to customer satisfaction.

bob fitzgerald, play by play announcer for the golden state warriors. satisfied customer of pacific exterior.

“ Pacific Exterior did an incredible job cleaning my clay tile roof.  They were professional, on time, very thorough and I would recommend them for any and all cleaning situations for any home.  Extremely pleased with their work. ”

Bob Fitzgerald

Golden State Warriors TV Play by Play Announcer
phil schuman

“Everything looks great. You did an outstanding job, it's really beautiful.”

P. Schumann

dr. scott fross of menlo park. a satisfied customer of pacific exterior.

Exceptionally detail oriented. I would highly recommend them to anyone seeking this type of work.

Dr Scott Fross

Menlo Park
m eschen - santa cruz, ca

“It's AMAZING! The crew was professional, hard working and went above and beyond. Would highly recommend them to anyone.”

M. Eschen

"Leading experts. Experienced professionals. Passionate ownership."

Frequently Asked Questions

It is easy to see on most homes while the growth is in process; there are dark black streaks, particularly on the north facing roof, though once the algae has fully taken over it is sometimes hard to tell. (It's never too late to remove.) The best place to look to find out if your roof is dirty is below metal roof jacks flashing and sky lights. There you should find lighter colored streaks or patches...that is the original color and that is what your roof will look like after we have completed our service!

Yes. Pressure washing will dislodge the granules from the surface of the shingles and can scar the shingles causing more problems than you started with. Shingle manufacturers make it very clear that no pressure should be used to clean roofs. Although leaving the roof apparently clean looking, pressure washing alone does not kill the algae and the problem quickly returns. Tile roofs are also susceptible to damage from pressure, particularly the glaze finish and color pigment. The typical result is that the tile loses its color and is left far more porous. The new porous surface fosters the regrowth of algae, lichen, and moss. Removing the outer surface of roof tile using pressure also allows moisture to enter the tile which accelerates degradation.

As soon as you notice any signs of the shading or staining. The gloeocapsa magma bacteria is relatively easy to remove. Moss and lichen require much more time and effort. Even after the treatment, a small amount of dead moss will remain, left to decompose over time. The best time to treat a dirty roof is before signs of moss or lichen.

Yes. Cleaning your roof can save you money in more ways than one...

  • First, the algae and fungus that grows can cause premature roof granule loss, and shorten roof shingle life. So you save money because your roof lasts longer
  • Second, when the algae turn your roof black, it becomes less reflective, and it retains heat; If you use an air conditioner it has to work harder to overcome the increased heat load, costing money in electric bills.
  • Third, the aesthetics of cleaning your roof when it comes to selling your home can not only save you money but can make you money too.

Yes. We have many happy customers who would love to share their roof cleaning experience with you, Most likely, some in your neighborhood. Please feel free to request a list by e-mail.

Yes, we are properly insured and send proof of current insurance out with all proposals. All employees are covered by workers compensation insurance. We are registered with the DIR for governmental work and prevailing wage jobs.

Hassle-free & Convenient Maintenance

  • Our technicians are professional, courteous and well-trained on how to operate with minimal interruption to your daily operations.

  • Our manufacturer-approved methods provide immediate, long lasting results without causing damage to your roof or property.

  • Our proprietary cleaning solutions and application methods are environmentally friendly, and safe for your property’s landscaping.

  • Our commercial roof maintenance plans are uniquely designed to provide optimal performance and reduce repeat maintenance and unnecessary repair costs.

We provide scheduled maintenance, inspection and repair services for over 4 million square feet annually. If you have questions, please contact us for a free quote or test cleaning. We are confident we can provide satisfying answers and outstanding results for your commercial facility!

For professional roof and exterior cleaning or commercial roof maintenance, fill out our online request form or call, Bay Area (650) 331-687-0895 or Monterey Bay (831) 275-1296.

We Clean and Restore Home and Office Roofs and Exteriors.

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