Licensed, bonded, and insured in Washington and Oregon
Flat Roof Cleaning | Vancouver & Portland
Expert flat roof cleaning for commercial and residential properties with ponding prevention
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Why do we have 743+ Five star google reviews?
Trust
We earn trust by delivering a consistently great experience. Clients return year after year, confident they'll receive the same high-quality service.
Quality
Our skilled crews provide workmanship that impresses and holds up over time.
Price
We offer fair, competitive pricing so customers can enjoy top-tier service without stretching their budget.
Our 5 Step Flat Roof Cleaning | Vancouver & Portland Process
Step 1: Inspect
We assess your flat roof condition, locate all drains, and identify debris accumulation and problem areas.
Step 2: Clear Debris
All leaves, branches, and accumulated organic matter are carefully removed by hand.
Step 3: Clean Drains
Roof drains, scuppers, and overflow outlets are thoroughly cleared to ensure proper drainage.
Step 4: Clean Surface
The membrane surface is cleaned using methods safe for your specific roof type.
Step 5: Treat & Protect
Moss and algae treatment is applied where needed to prevent regrowth.
All Seasons did an outstanding job pressure washing our driveway and patio. The difference is incredible - it looks like new concrete! Very responsive...
We have used All Seasons multiple times for various services and they never disappoint. This time it was window cleaning and the results were fantasti...
I hired All Seasons for gutter cleaning after seeing their great reviews and was very pleased with their service. They were quick to get me a quote an...
Excellent service from start to finish! The crew arrived on time, was very professional, and did an amazing job on our roof cleaning. Our roof looks b...
We initially contacted All Seasons to have our roof and gutter cleaned. The man they sent out was very nice and did a very thorough inspection of our ...
Professional Flat Roof Cleaning in Vancouver & Portland
Flat roofs require specialized maintenance to prevent water ponding, membrane damage, and premature failure. At All Seasons Cleaning Services, we provide expert flat roof cleaning for both commercial and residential properties throughout the Vancouver, WA and Portland, OR metro areas.
Why Flat Roofs Need Regular Cleaning
Unlike sloped roofs that naturally shed water and debris, flat roofs are prone to accumulation that can cause serious problems:
- Water ponding - Debris blocks drains, causing water to pool and accelerate membrane deterioration
- Membrane damage - Organic debris holds moisture against the roof surface, promoting algae growth and material breakdown
- Drain blockages - Leaves, moss, and debris clog roof drains and scuppers, leading to flooding
- Added weight - Wet debris and standing water add significant weight that can stress the roof structure
Types of Flat Roofs We Clean
TPO (Thermoplastic Polyolefin)
White TPO membranes are popular for their energy efficiency but show dirt easily. We safely clean TPO without damaging the membrane or seams.
EPDM (Rubber Roofing)
Black rubber roofs are durable but can develop moss and algae in shaded areas. Our cleaning methods are safe for EPDM surfaces.
Built-Up Roofing (BUR)
Traditional tar and gravel roofs require careful cleaning to avoid disturbing the gravel layer while removing debris and moss.
Modified Bitumen
These rolled roofing systems need gentle cleaning that won't damage the cap sheet or compromise waterproofing.
Our Flat Roof Cleaning Process
Step 1: Inspection & Assessment
We evaluate your flat roof's condition, identify drain locations, and note any areas of concern.
Step 2: Debris Removal
All leaves, branches, and accumulated debris are carefully removed by hand and with soft tools.
Step 3: Drain Clearing
Roof drains, scuppers, and gutters are thoroughly cleared to ensure proper water flow.
Step 4: Surface Cleaning
We clean the membrane surface using methods appropriate for your specific roof type.
Step 5: Moss Treatment
If moss or algae is present, we apply appropriate treatment to prevent regrowth.
Commercial & Residential Service
We serve both commercial buildings and homes with flat or low-slope roofs. Our team is experienced with:
- Office buildings and retail centers
- Warehouses and industrial facilities
- Multi-family apartment buildings
- Residential additions and modern home designs
- Garage and carport flat roofs
Schedule Your Flat Roof Cleaning
Don't wait for drainage problems or leaks. Contact All Seasons Cleaning Services today for professional flat roof maintenance.