Roof Cleaning Springfield | Soft Wash

Roof Cleaning in Springfield

The black streaks running down shingle roofs around here aren’t dirt. They’re algae, feeding on the crushed limestone that manufacturers blend into shingles, and the streaks widen every wet season. Moss is the bigger problem: it grows pads that hold water against the shingle and lift the tab edges, which lets wind and the next rain get underneath.

Summit Roofing cleans shingle roofs the way shingle manufacturers say to: soft washing, never pressure.

The streaks show up first on north-facing planes and anywhere a tree keeps the shingles shaded and damp. Left alone, the colony spreads across the whole slope, and a streaked roof reads as an old roof to every buyer and appraiser who looks at the house, even when the shingles have plenty of life left.

Soft Wash, Never Pressure

A pressure washer will absolutely clean a shingle roof. It will also strip the granules, and granules are the armor. They’re what stands between the sun and the asphalt underneath, and once that asphalt is exposed, the shingle dries out, curls, and cracks years ahead of schedule. Most manufacturers void the warranty over it.

Soft washing flips the equation. We apply a detergent and sodium hypochlorite mix at roughly garden hose pressure, let it kill the algae and loosen the buildup, then rinse gently. The streaks fade as the dead growth washes and weathers away over the following weeks.

Moss Needs Patience, Not a Scraper

Scraping or blasting live moss tears granules off with it, because moss grips the shingle surface as it grows. We treat it, let it die and release over the following weeks, then brush or rinse off the remains without force. If moss has already lifted or broken tab edges, our shingle repair crew can swap the damaged shingles before they turn into leaks.

Keeping the Roof Clean Longer

Zinc or copper strips at the ridge. Every rain washes a trace of metal down the roof, which suppresses new algae growth for years.
Trim back overhanging limbs. Shade, stillness, and leaf litter are exactly what algae and moss want. Sun and airflow are what they hate.
Keep the gutters clear. Debris-packed gutters and downspouts keep the roof edge damp, and damp edges grow moss first.
Go algae-resistant at reroof time. AR-rated asphalt shingles blend in copper-coated granules so the roof fights the streaks on its own. If your shingles are near the end anyway, cleaning money is better spent on replacement, and we’ll say so.

Your Landscaping Is Part of the Job

The solution that kills roof algae is not kind to shrubs. We pre-soak the landscaping before we start, bag or divert downspout outlets so the rinse water doesn’t dump into a flower bed, and rinse plants and grass again when we finish.

Roof Cleaning Near You

We clean roofs across Springfield, Riverton, Lakeside, Cedar Grove, Maplewood, and Fairview. Every community we cover is on our service areas page.

Get the Streaks Off

Call Summit Roofing at (555) 123-4567 for a quote. Not sure whether you’re looking at algae streaks or something worse? Start with a roof inspection and we’ll tell you exactly what’s up there before you spend a dollar on cleaning.

Frequently Asked Questions

Will roof cleaning damage my shingles?

Not done correctly. Soft washing works at roughly garden hose pressure and lets the cleaning solution do the work, so the granules stay put. Pressure washing is what damages shingles, which is why we never put a pressure washer on a shingle roof.

What causes the black streaks on my roof?

Algae, not dirt. It feeds on the limestone filler in the shingles and spreads down-slope with rainwater, which is why the streaks run vertically. It shows up first on north-facing and shaded planes that stay damp the longest.

Can I pressure wash the roof myself?

Please don't. The granules a pressure washer strips off are the shingle's sun protection, and once they're gone the asphalt underneath dries, curls, and cracks years early. Most shingle warranties specifically exclude pressure washing damage.

How long does a roof cleaning last?

Three to five years is typical. Shaded roofs under heavy tree cover sit at the short end, open sunny roofs at the long end, and zinc or copper strips at the ridge stretch the interval further.

Does moss actually damage a roof, or just look bad?

It damages the roof. Moss pads hold water against the shingle mat, and as they grow they lift the tab edges, so wind gets under the course above them. A mossy roof fails at those edges years before the rest of it wears out.

Will the cleaning solution hurt my plants?

Not the way we handle it. We pre-soak the landscaping, bag or divert the downspout outlets, and rinse the plants and grass down again when the job is done.

Roof Cleaning