Solar Panel Cleaning in Des Moines
Maintain output, protect your investment.
Yes — dirt, pollen, and bird droppings can reduce solar panel output by 15–25%. JBL Exterior Pros cleans residential arrays across central Iowa using deionized purified water and soft-bristle methods approved by every major panel manufacturer. Most customers see the output gain within 24 hours.
- Typical output gain
- 15–25% after cleaning
- Recommended frequency
- Annually (heavier exposure: twice)
- Method
- Manufacturer-approved, pure-water only
Solar Panel Cleaning, in detail.
Dirt, pollen, and bird droppings can cut solar panel output by 15-25%. We use purified water at low pressure — no detergent residue, no scratching — to restore production and protect the manufacturer's warranty.
- Deionized purified-water rinse
- Soft-bristle hand cleaning of each panel
- Frame and mounting hardware wipe-down
- Output check before and after (where possible)
- Manufacturer-warranty-safe methods
Three steps, no surprises.
- 01
Roof and array inspection
We confirm array layout, panel manufacturer, and the safest access. Roof condition gets a quick check — we don't walk panels.
- 02
Purified-water clean
Deionized water rinses without leaving mineral spots. Soft-bristle finishing where needed. No detergents, no abrasives — nothing that voids the manufacturer's warranty.
- 03
Confirmation and report
Final rinse, photo-documented before/after, and a quick walk-through. If you have monitoring, check your kWh output over the next 24 hours — the gain is usually obvious.
Frequently asked solar panel cleaning questions
01How much output improvement should I expect?
Depends on how dirty the panels were. Light dust: 5-10%. Heavy pollen or bird droppings: 15-25%. Customers with monitoring usually see the jump within a day or two.02How often should panels be cleaned?
Annually for most central Iowa installations. Properties with heavy tree cover or near agricultural fields may want twice a year.03Will cleaning void my warranty?
Not when done right. We use methods approved by all major panel manufacturers — purified water, soft bristles, no abrasives or detergents. Pressure washing panels WILL void warranties; we never do that.04How much does solar panel cleaning cost in Des Moines?
Pricing depends on panel count, roof pitch and accessibility, and whether the array can be cleaned from the edge or requires roof access. We often pair the service with a window or gutter clean on the same visit, which keeps the total visit cost down.05Can't I just spray them with my garden hose?
Tap water leaves mineral spots that reduce output between cleanings — and the longer those spots sit, the harder they are to remove later. Pure deionized water cleans without leaving deposits. The result lasts longer.06Is it safe to be on the roof?
We use water-fed poles from the roof edge or ladder where possible — we don't walk on panels, which can crack them or void warranty. For arrays that require roof access, we use harness and fall-arrest gear. Fully insured.07What about snow?
Iowa snow typically self-clears from panels within a few days of accumulation — panels tilt and warm slightly during sun exposure, sliding snow off. But melted snow leaves mineral residue from the surface dust it picked up. An early-spring cleaning (March–April) captures both the residue and the upcoming pollen deposit.08Does central Iowa really need solar cleaning?
Yes. Iowa's spring pollen alone deposits enough on panels to cut output 10–15%; agricultural dust drift in summer adds another layer. Customers with monitoring see the seasonal output dip every year — it's not subtle. The investment in solar pays back fastest when the panels stay clean.
Ready for solar panel cleaning?
A JBL rep walks your property in person within one business day. Honest pricing, real recommendations, no obligation.