Lake Oswego, OR Roof Cleaning

Cleaning that enhances and protects your roof system

Roof Cleaning in Lake Oswego, OR – Remove Moss & Grime with Soft Washing

Your roof is one of the most important parts of your home, but over time, it can become covered in black streaks, moss and algae, causing premature wear and reducing curb appeal. At NW Softwash, we provide expert roof cleaning in Lake Oswego, OR, using a low-pressure soft wash system that eliminates harmful growth without damaging your shingles.

Unlike traditional pressure washing, which can strip away granules and shorten your roof’s lifespan, our soft wash method gently removes moss, algae, and organic buildup while ensuring long-lasting protection.

Why Choose NW Softwash for Roof Cleaning?

✔ Soft Wash Cleaning – No Pressure Damage – Our low-pressure application cleans asphalt shingles and tile roofs.

✔ Kills Moss and Algae at the Root – Our cleaning solution breaks down organic growth and prevents it from returning, keeping your roof clean for years.

✔ Licensed for Pesticide Application – As a Oregon State Department of Agriculture-certified applicator, we apply safe, EPA-approved treatments to ensure proper moss control and long-lasting protection.

✔ Extends Your Roof’s Lifespan – Moss and algae trap moisture, leading to shingle deterioration. Regular soft washing prevents costly roof damage and extends its life.

✔ Top-Rated Roof Cleaning Experts in Lake Oswego, OR – We’re a trusted local company, serving homeowners across Oregon with professional, high-quality service.

Licensed & Certified for Pesticide Applications

NW Softwash is licensed with the Department of Agriculture to apply safe, eco-friendly treatments that kill moss and algae at the root, preventing regrowth and keeping your roof clean for longer.

Rated 5 out of 5

NW Softwash did a great job on our composite roof last year so we used them to power wash our concrete and softwash our pavers to get the accumulation of moss & mold off. Marshall and Canaan did a great job be careful of our landscaping and going the extra effort to hit a few other spots and they drained there equipment and retouch a small section of our roof where the moss was returning. Very pleased.

Christopher Lindgren

Google Review

Our Lake Oswego Roof Cleaning Process

1. Inspection & Light Sweep – We first assess the roof’s condition and then provide a light sweep of the moss and debris.

2. Treatment Process – Once the debris is agitated, we blow off the roof with leaf blowers to clean off the surface. Next, we apply a low pressure liquid moss treatment that kills the moss including its root systems.

3. Clean Up & Results – After the treatment is applied, our technicians will clean up all fallen debris from the grounds around your home. Moving forward, you will see the dead moss compounds dry up and flake off your roof in the upcoming months with the wind and rain. Our softwash treatment targets existing moss and algae and helps slow regrowth. Results vary depending on shade, moisture, surrounding trees, and debris buildup. Your service includes our 1-Year Green-Free Guarantee.

After a roof cleaning, we often recommend gutter cleaning
to ensure your whole home is protected from water damage.

Roof Types We Clean

✔ Asphalt Shingle Roofs

✔ Tile Roofs (Concrete & Clay Tile)

✔ Flat & TPO (Thermoplastic Polyolefin) Roofs

Clean Home = Happy Home

Give your home the gift of a Roof Cleaning and see the difference it makes!

Frequently Asked Questions

See our most popular questions and answers below for Roof Cleaning

Do you clean tile roofs as well as shingles?

Yes. Asphalt shingle and tile roofs are central to our roof-cleaning work. We don't clean cedar or metal roofs.

Will all the moss be gone on the day of the cleaning?

Not necessarily. We clear loose debris during the visit, but treated moss that is still attached needs time to dry out and weather away.

How often should a roof be cleaned?

It depends on the roof and its surroundings. Shade, nearby trees and debris buildup all matter. Keep an eye on your roof and contact us when you notice moss or algae returning.

Does the treatment stop moss from returning forever?

No. Our roof cleaning comes with a 1-year green-free guarantee. Treatment addresses existing growth and helps slow regrowth, and regular checks and debris removal still help care for your roof.

Can you quote the roof and the rest of the house together?

Yes. We also offer house washing, gutter cleaning, concrete cleaning and exterior window cleaning. Tell us what you need and we'll put the quote together.

Signs Your Lake Oswego Roof Needs Professional Cleaning

Black streaks on shingles (caused by algae and bacteria)
Green moss growth
Dull, discolored roof appearance
Debris buildup in valleys and gutters
Shingles retaining moisture or showing early signs of deterioration

Why Regular Roof Cleaning in Lake Oswego Matters

Many homeowners don’t realize that moss, algae, and organic buildup can shorten the life of their roof. In Lake Oswego, OR, where damp conditions encourage rapid growth, neglecting roof maintenance can lead to water damage, leaks, and expensive repairs. Our soft wash roof cleaning eliminates harmful growth while preserving the integrity of your shingles.

Contact Us

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Call or Text For A Fast Quote: Protect Your Time

We aim to run a simple business. Our goal is for our customers to experience a seamless interaction from the quote, to the final completion of a job.

We will respond to your inquiry within 30 minutes during normal business hours.

Customer Service (Call Or text)

360-583-4428

service@nwsoftwash.com

Testimonials

Client Feedback & Reviews

      EXCELLENT  
   Based on 1426 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Randy M 
 
 
 
 Trustindex verifies that the original source of the review is Google. The technician from NW Softwash was sent out as promised on time and very professional.  He explained everything and what he was going to do. He cleaned up all debris from the property and left my property clean.  I would recommend them to anyone.
  
 
      Posted on Google  
   
   Ron Jagels 
 
 
 
 Trustindex verifies that the original source of the review is Google. Estimate for roof cleaning was provided quickly. Isaiah explained the roof cleaning process and materials used. All questions were answered. Cleanup was excellent. Will definitely use NW Softwash again
  
 
      Posted on Google  
   
   Victoria Ellsberg 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great job on my home, Isaiah!  All services were great! I highly recommend you for all other services In the future!
  
 
      Posted on Google  
   
   David 
 
 
 
 Trustindex verifies that the original source of the review is Google. Communication from the office was great. Adam arrived early and clean heavy moss and then treated the whole roof. No pressure washing!  Excellent service!     David Tolleshaug
  
 
      Posted on Google  
   
   JD Quintinita 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent communication and scheduling throughout the entire process. Both Ford and Isiah were professional, customer-focused, informative, and highly knowledgeable about the roof cleaning service and what to expect afterward. They took the time to explain that while the moss has been successfully treated and is now dead, it will remain on the roof until it naturally loosens and falls away. After the first few rains, the remaining moss will begin to disappear on its own. I highly recommend this company based on the quality of their work, their attention to detail, and the exceptional care and service provided by their employees.
  
 
      Posted on Google  
   
   Mary Mochnal 
 
 
 
 Trustindex verifies that the original source of the review is Google. Marshall did a great job! Exceeded my expectations. He Arrived on time. He Went over scope of work before started and asked if I had any areas he should specifically address. His attention to detail on areas needed was much appreciated. He was very professional. I am a repeat customer and will choose NW Softwash again without hesitation. Make sure to ask for Marshall on your job!
  
 
      Posted on Google  
   
   Tiffany Hill 
 
 
 
 Trustindex verifies that the original source of the review is Google. Isaiah arrived on time and did a fantastic job cleaning the moss and algae off our driveway and entryway. He restored both to looking brand new again. Isaiah also inspected our entire roof and attended to small areas of moss that he found as covered by our roof cleaning warranty. NW Softwash and their staff are the best in town!
  
 
      Posted on Google  
   
   Melinda Chapman 
 
 
 
 Trustindex verifies that the original source of the review is Google. A technician took care of a bit of moss that had returned 2 years later. I reached out via email one evening and a tech was there a couple of days later. He did a great job and was very professional.
  
 
      Posted on Google  
   
   Gary Jelinek 
 
 
 
 Trustindex verifies that the original source of the review is Google. Isaiah's work was excellent removing moss from entry sidewalks and followup cleaning of windows.  Early work washing down home exterior was also well done.
  
 
  
  
 
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