House Washing Chemicals Explained: What's In Our Tank

Drive around the Triangle, NC and you'll see these statements everywhere.

Eco-friendly.

Green clean.

Safe for your family.

It's on truck doors, yard signs and social media ads. As a homeowner, though, you deserve more than a phrase, you deserve an actual answer to the question that matters: what's in the tank?

We think that's backwards. You wouldn't hire a landscaper who wouldn't tell you what's in the fertilizer going down next to your kids' swing set, and you shouldn't have to hire an exterior cleaner who won't tell you what's hitting your siding, your roof, and the flower beds underneath. So here's the real answer, not a slogan.

For us, being environmentally responsible isn't just a phrase we print, it's a standard we hold on every job, regardless of which product ends up in the tank. Sometimes that means a certified eco-friendly formula. Sometimes it means a stronger chemistry, handled with real discipline.

We carry four products used across our different services, and each one has its own specific job. Not because one magic spray bottle handles everything, it doesn't, but because doing this properly means matching the right tool to the actual condition of your home, and to the choice you make about how it's cleaned."

The dedicated concrete cleaner

For concrete and flatwork, we use a peroxide-based cleaner certified under EPA Safer Choice, a federal program that vets every ingredient against strict human and environmental health standards. It's a true eco-friendly product, not just a label we chose to print, and it does a phenomenal job on concrete specifically: pH neutral, no solvents or ammonia, built for dense, non-porous surfaces. It's fast to apply, effective on dirt, oil residue, and organic buildup, and it's the cleaner behind every driveway wash we do.

The standard eco-friendly wash

For siding and roof jobs where a homeowner chooses our eco-friendly Renew Wash, this is the standard product we reach for. The active ingredient releases hydrogen peroxide, the same compound in the brown bottle in your medicine cabinet, working on the same principle: it oxidizes algae, mildew, and grime, lifts it off the surface, and breaks down into water and soda ash afterward. It works through dwell time, not brute force, so it takes a little more hands-on effort and a little more time to get there. That's not a weakness, it's the mechanism, and it's the option most homeowners pick within Renew Wash.

The eco-friendly powerhouse

For homeowners who want the strongest clean available without any chlorine bleach at all, we carry a specialized, highly concentrated peroxide product manufactured in Canada, under environmental manufacturing standards and enforcement that are far stricter than what's required here in the US. It's still new to the American market, currently supplied by only one distributor. It's our most premium option, priced above the standard eco-friendly wash, and it earns that price: it does a phenomenal job on the toughest buildup, the jobs where the standard treatment would need real time or multiple passes to fully lift, and it keeps working after we've left, continuing to break down buildup long after the job is done. We apply it with the same drain-protection discipline we use on our strongest wash, because real strength earns real caution, chlorine-free or not."

The strongest wash

For siding and roofs where the buildup has set in for years, or where a homeowner simply wants a faster, more efficient clean, we offer Restore Wash. It's built around sodium hypochlorite, the same active ingredient in household bleach and the same category of chemistry used in municipal water treatment and pools, which is exactly why it's so effective, and so fast. We're upfront that this one isn't gentle: it doesn't distinguish between the algae on your siding and the plants beneath it. That's what environmentally responsible actually means to us here: not a gentler chemical, but a disciplined process around a strong one. Every Restore Wash includes a full pre-soak and rinse of your landscaping so nothing dries onto exposed plants, correct dilution for the specific surface being cleaned, drain covers so nothing reaches the storm system untreated, and a trained, insured operator managing the process from start to finish.

Why four, not one

Every product on this list is matched to a specific job, and where Renew Wash and Restore Wash overlap on siding and roofs, the choice is yours. Some homeowners want the gentlest option available and are glad to trade a little time for it. Others want speed and trust us to handle the stronger chemistry responsibly.

Both are reasonable, and we'll walk you through which one fits before we start.

What this means for you

You're not getting a single mystery chemical marketed as "eco-friendly" and hoped to work on everything. You're getting real tools, each one chosen for the job and the choice in front of it, and all of them explainable in plain terms if you ever ask.

That's the standard. Not a slogan on the truck, an actual answer when you ask what's in the tank.

- From the Magnolia Exterior Co. team.

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