Vinyl siding is the most common exterior cladding on homes across Greater Cleveland — and it’s also the most commonly cleaned incorrectly. Here’s what you need to know.
## Why Vinyl Siding Needs Regular Cleaning
Vinyl is a plastic product, which means it doesn’t rot or absorb moisture like wood. But it does accumulate organic growth — algae, mildew, mold — on its surface, especially on north-facing walls and shaded areas.
In Northeast Ohio’s humid climate, green or black streaks can appear on vinyl siding within a single season. Left untreated:
– Algae and mildew become harder to remove
– Oxidation (the chalky film that develops over time) accelerates
– Color can fade unevenly
– The buildup can work into seams and lap joints
## Why High-Pressure Washing Damages Vinyl Siding
This is the most important thing to understand. Standard pressure washing at high PSI (2,000–4,000 PSI) can:
– Force water behind the siding panels, into the wall cavity
– Cause moisture damage and mold inside the wall
– Crack or break siding panels, especially on older homes
– Void manufacturer warranties
– Strip caulking around windows and doors
**Vinyl siding should always be soft washed** — low pressure (under 500 PSI) with professional cleaning solutions.
## How We Clean Vinyl Siding
1. Pre-rinse to remove loose debris
2. Apply professional soft wash solution (kills algae and mildew at the cellular level)
3. Allow dwell time for the solution to work
4. Low-pressure rinse from top to bottom
5. Check for missed areas and touch up
The entire process for an average home takes 2–3 hours. Results typically last 12–18 months.
## Oxidation on Vinyl Siding
Older vinyl develops a chalky film called oxidation — the plasticizers in the vinyl break down over time. Professional cleaning with the right solutions can significantly reduce the appearance of oxidation, though very heavily oxidized siding may need replacement.
**[Get a Free Siding Cleaning Estimate](https://mrpowerwash.co/contact/)** | [(440) 477-6275](tel:+14404776275)
Serving Parma, Parma Heights, Avon, Avon Lake, Berea, Brunswick, Strongsville, Medina, North Olmsted, Lakewood, Rocky River, Westlake, Bay Village, Fairview Park, and all of Greater Cleveland.