FAQ · 4 min read

Siding Cleaning FAQs: What WVC Homeowners Ask Me Most

Got questions about keeping your home's siding clean here in West Valley City? I'm tackling the most common ones I hear from homeowners, right here and now.

← Back to Blog Completed siding cleaning work at a residential property in West Valley City, UT

Do I really need to clean my siding? Isn't rain enough?

Look, I hear this one a lot, and I totally get it. You figure nature takes care of itself, right? But here in West Valley City, especially with all our dust, pollen, and sometimes even the exhaust from Redwood Road, rain just doesn't cut it. Rain washes some stuff off, sure, but it also spreads dirt around and can leave streaks. Over time, you'll get a buildup of grime, mildew, algae, and even those weird black streaks that seem to pop up out of nowhere. If you don't clean it, that gunk can actually start to break down your siding's finish, especially on vinyl or painted surfaces. It's not just about curb appeal; it's about protecting your investment. Think of it like washing your car – a quick rinse doesn't get rid of everything, does it?

How often should I clean my siding?

This isn't a one-size-fits-all answer, but generally, I tell folks to aim for at least once a year. If your home is under a lot of trees, or if you're in a particularly dusty area, you might need to do it twice. I've seen homes near construction sites or busy intersections that get filthy fast. Also, if you notice any green or black spots starting to form, don't wait. Those are usually mildew or algae, and they'll spread if you let 'em. A good rule of thumb is to take a walk around your house in the spring and fall. If it looks dirty, it probably is.

What's the best way to clean vinyl siding without damaging it?

Vinyl siding is pretty tough, but you can still mess it up if you're not careful. The absolute best way is with a low-pressure wash using a cleaning solution. You don't need a super-powerful pressure washer set to maximum blast; that can actually force water behind the panels or even etch the vinyl. I recommend a garden hose with a good spray nozzle, or a pressure washer set to a wide fan tip (like 40 degrees) and kept a few feet away from the siding. For the cleaner, a simple mix of warm water and a little dish soap works wonders for light dirt. For tougher stuff like mildew, you can use a solution of 70% water and 30% white vinegar, or even a bit of oxygen bleach (not chlorine bleach, that's a whole other can of worms). Always rinse thoroughly from top to bottom to avoid streaks.

Can I use a pressure washer on all types of siding?

No, definitely not! This is where people get into trouble. While vinyl can handle a low-pressure wash, other materials are a lot more delicate. Wood siding, especially older painted wood, can be easily damaged by high pressure. You can strip paint, splinter wood, and force water into places it shouldn't go, leading to rot. Stucco and EIFS (Exterior Insulation and Finish Systems) are also very sensitive; high pressure can gouge them or compromise their integrity. Fiber cement siding, like HardiePlank, is tougher, but even then, I'd stick to a gentler approach. For anything other than vinyl, I usually recommend soft washing – a very low-pressure application of cleaning solution, followed by a gentle rinse. If you're unsure, it's always better to be safe than sorry, or just call a pro like us at Aim High Siding Company.

What about those black streaks or green spots? How do I get rid of them?

Ah, the dreaded black streaks and green spots. The green stuff is usually algae, and the black is often mold or mildew. They love damp, shady spots. For these, you'll need a bit more than just soap and water. As I mentioned, a diluted white vinegar solution can work for lighter cases. For tougher growth, an oxygen bleach product (like OxiClean, but check the label for exterior use) mixed with water is usually effective and safer for your plants than chlorine bleach. Apply it, let it sit for 10-15 minutes (don't let it dry!), and then rinse well. You might need a soft brush for stubborn spots, but avoid scrubbing too hard, especially on painted surfaces. Sometimes, just improving air circulation around your house by trimming back bushes can help prevent them from coming back so quickly.

Should I hire a professional or can I do it myself?

That's a good question, and honestly, it depends on a few things. If you've got a single-story home with easy access to all sides, and you're comfortable on a ladder, you can probably tackle it yourself with the right tools and knowledge. It'll save you some money, and you'll get a good workout. However, if you have a multi-story home, steep inclines, or if you're dealing with really stubborn stains or delicate siding materials, I'd strongly recommend hiring a professional. We've got the specialized equipment, the right cleaning solutions, and most importantly, the experience to do it safely and effectively without damaging your home or landscaping. Plus, we're insured, which is a big deal if something goes wrong. Sometimes, that comfort is worth the cost.

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