
Got questions?
Check Our FAQs
Common Roof Cleaning Questions
We normally require a credit card or ACH (e-Check) at the time of booking to reserve your slot. We charge a 3.25% credit processing fee for all card payments.
There is no fee for ACH (E-Check) and cash/check payments on-site. All payment information is encrypted and process through Intuit.
Property managers, HOA's, and businesses can contact our office for other billing arrangements.
Wilderland is licensed, bonded, and insured in Oregon and Washington. Our Oregon Construction Contractors Board license number is CCB #210765 and our registry with Washington L & I is #WILDERC818CG. We are also a certified pesticide operator with ODA license # AG-l1084448CPO. (Moss is considered a pest so companies providing moss treatments are required to be licensed by the Oregon Department of Agriculture)
We are happy to provide insurance and license certificates upon request. Please contact our office if needed.
All of our technicians are full time employees! We pride ourselves in hiring people that are friendly, professional, and dedicated to their work. All prospective employees are required to go through a background screening and drug test. We offer competitive living wages, full benefits, and paid time off to ensure a healthy work life balance. We know you will enjoy meeting our technicians!
In the pacific northwest if you don't work in the rain you don't work! Our team is fully equipped to effectively and safely work in the most weather conditions. If there is unsafe weather such as excessive heat, smoke, snow, or freezing temperatures, we'll reach out to reschedule to a later day.
Our technicians are well-trained, equipped, and required to use a full array of industry leading fall protection equipment including ropes and harnesses to safely access your roofs, gutters, windows, and siding. Each new technician goes through a vigorous 4 week training process and they recieve regular ongoing safety inspections. We abide by the rules and regulations for fall protection and ladder safety.
We pride ourselves in only using environmentally and people/pet safe moss treatments that are also certified for use in organic applications.
For roofs with a medium to low pitch, we use Sodium Carbonate Peroxyhydrate (hydrogen peroxide) granule treatment. The treatment oxidizes with moisture (rain/dew) and strips the waxy protective coating from the moss allowing it to die from exposure. Once reacted, it fully breaks down into oxygen and water leaving no harmful byproducts. Safety and environmental information is available is available upon request. Treatment is OMRI certified for organic applications.
For liquid treatment applications, we apply a d-limonene concentrate (citrus oil) applied at a 2%-10% ratio. The treatment works by stripping the protective waxy coating from the moss which allows it to die from exposure. Results are often visible within few hours and will continue work for weeks after application! Safety and environmental information is available upon request. OMRI certified treatment is available on request.
For algae washing, we use diluted outdoor cleaner which contains a sodium-hypochlorite formula that works rapidly to clean stains from algae, mold and mildew. Unlike straight bleach, it’s safe to use around your lawn and landscaping and breaks down once rinsed into the soil.
The Oregon Department of Agriculture considers moss a pest! The law requires all businesses that treat moss to maintain a certified pesticide operators license and that each worker have an active pesticide applicators license. Our License number is AG-L1084448 and each employee holds an active pesticide applicators license. For further information please see the Oregon Department of Agriculture website for license number search and more helpful information.
The fastest way is to fill out our quote form on our website or call our office for a quote over the phone. Our coordinators will measure out your home using satellite and use our bidding software to set a price. In some rare instances we may send a technician to your home if we can't collect enough data and imagery online.
We always provide our very best price right up front so you can rest assured you're getting the highest value for your money. As a result we do not offer discounts however we do occasionally offer seasonal scheduling promotions.
Have questions about a specific service? Check our service pages

Look for Us In Your Neighborhood
Multnomah County
Clackamas County
Washington County
Clark County
Portland, OR
Beaverton, OR
Tualatin, OR
Tigard, OR
Hillsboro, OR
Vancouver, WA
Camas, WA
Battleground, WA
Washougal, WA

