How to Clean Vinyl Siding

Key Takeaways

• Cleaning vinyl siding 1–2 times per year helps maintain its appearance and longevity.
• Use a garden hose, soft brush, and gentle cleaner like dish soap or vinegar.
• Avoid abrasive tools and overly high pressure washers.
• Mold and mildew can be removed safely with a diluted bleach solution.
• If your siding still looks tired after cleaning—it might be time to consider a full replacement!

Introduction

Vinyl siding is one of the most popular choices for home exteriors in Hamilton—and for good reason! It’s low-maintenance, durable, and looks fantastic. But even the best siding needs a little upkeep now and then.

If you’re wondering how to clean your vinyl siding the right way, you’re in the right place. At Golden Horseshoe Roofing, we’ve worked with vinyl siding for years and know what keeps it looking fresh and fabulous!

Why Clean Vinyl Siding?

Vinyl siding is designed to withstand the elements, but Ontario weather can still leave its mark. Dust, pollen, bird droppings, algae, and mildew all find their way onto your exterior—especially on shaded or damp sides of the home.

Regular cleaning helps to:

• Maintain curb appeal
• Prevent long-term staining
• Spot issues like warping or cracking early
• Protect your home’s value

How Often Should You Clean It?

Generally, vinyl siding should be cleaned once or twice a year. The best times are spring (after a long winter) and fall (before freezing temps return). But if your house sits near a dusty road, wooded area, or lake, you might need to clean more often.

What You’ll Need

You don’t need any special equipment or harsh chemicals. Most homes can be cleaned with:

• Garden hose with a spray nozzle
• Bucket of warm water
• Soft-bristle brush (a long-handled car wash brush works great)
• Mild soap or vinegar
• Optional: Bleach for mold/mildew (see next section)
• Optional: Ladder (only if you're comfortable and it's safe)

Avoid steel wool, wire brushes, or abrasive scrubbers—they can scratch the siding.

Step-by-Step Cleaning Guide

Step 1: Rinse the Siding

Start by spraying down your siding from top to bottom with a hose. This loosens surface dirt and debris.

Step 2: Prepare Your Cleaning Solution

In a bucket, mix:

• Warm water + dish soap (a few drops go a long way), or
• 70/30 vinegar and water solution (great for cutting through grime)

Step 3: Scrub Gently

Using your brush, work in small sections from bottom to top. Scrubbing side-to-side is best—it prevents water from being forced behind the panels.

Step 4: Rinse Well

Once a section is scrubbed, rinse it thoroughly before the soap dries. Repeat around the house.

Dealing with Mold and Mildew

Got green or black patches in shady spots? That’s likely mildew or algae. Here’s how to handle it:

DIY Mold Treatment:

• Mix 1 part bleach to 10 parts water
• Spot-apply the mixture using a sponge or sprayer
• Let it sit for 5–10 minutes, then scrub and rinse thoroughly

Always test a small area first and wear gloves!

Can You Use a Pressure Washer?

Yes—but with caution.

If misused, pressure washers can damage vinyl siding or force water behind the panels, causing hidden rot or mold.

If you choose to use one:

• Use a low to medium setting
• Spray straight at the siding—never upwards or at an angle
• Keep the nozzle at least 1 metre away from the wall
• Avoid spraying near window seams, electrical fixtures, or vents

When Cleaning Isn’t Enough

Sometimes, no matter how well you clean, your siding still looks faded, warped, or outdated. That’s when it might be time to think about a full replacement.

Signs your siding may need replacing:

• Persistent discolouration
• Cracks, warps, or gaps
• Bubbling or bulging panels
• Moisture or mold problems inside your home

Cleaning can’t fix age-related wear—but new siding can breathe new life into your home’s exterior!

Final Thoughts

Keeping your vinyl siding clean is an easy way to protect your investment and keep your home looking sharp year-round. A little soap and water go a long way!

But if you find yourself cleaning more often than not—or if the siding just doesn’t bounce back like it used to—it might be time for an upgrade.

At Golden Horseshoe Roofing, we specialize in full vinyl siding replacement that boosts curb appeal and stands up to the unique climate here in Hamilton and the Golden Horseshoe area.

👉 Reach out today for a quote or expert advice on siding replacement.