How to Clean Siding: The Ultimate Homeowner’s Guide

Your home’s exterior takes a beating from the elements all year round – rain, snow, pollen, dust, and mildew can leave siding looking dingy. Knowing how to clean siding properly is key to keeping your house looking fresh and protecting it from long-term damage. Whether you want to DIY the job or hire a pro, this guide will walk you through everything you need to know about how to wash siding safely and effectively.

Why Cleaning Siding Matters?

Regular siding maintenance isn’t just about appearances – it plays an important role in your home’s health. Having a clean siding is important since it:

• Prevents Damage: Mold, mildew, and algae can break down siding materials over time.
• Maintains Curb Appeal: A clean exterior makes your home look well-kept.
• Improves Longevity: Routine care extends the life of your siding, saving money on costly replacements.
• Protects Property Value: Clean siding is a big plus when it’s time to sell your home.

Experts recommend cleaning siding at least once a year, though homes in areas with high humidity or heavy tree coverage may need more frequent washes.

Follow This Guide to Have a Clean Siding

Step 1: Choose Your Cleaning Method

There are several ways to wash siding, and the right method depends on the material your home has.

• Vinyl Siding: Gentle scrubbing or pressure washing on a low setting works best.
• Fiber Cement Siding: Avoid high pressure; use a soft brush and mild detergent.
• Wood Siding: Use a soft wash method to avoid splintering or damaging paint.
• Aluminum Siding: Gentle cleaning with soap and water usually works well.

Step 2: Gather Cleaning Supplies

For a basic siding cleaning, you’ll need:

• Garden hose with spray nozzle or pressure washer (low pressure)
• Soft bristle brush or long-handled scrub brush
• Bucket
• Mild cleaning solution (dish soap, vinegar mix, or siding cleaner)
• Safety goggles and gloves

If you have mildew or algae, you may also want a cleaner with a mild bleach solution. Be sure to follow manufacturer recommendations to avoid damage.

Step 3: Protect Your Home

Before you begin to clean siding, take these safety steps:

• Cover plants and shrubs near the house to protect them from cleaning solutions.
• Close all windows and doors.
• Turn off outdoor electrical outlets and lights.

Step 4: Pre-Rinse the Siding

Use a garden hose to rinse off loose dirt and debris. This prevents scratching when you start scrubbing.

Step 5: Apply Cleaning Solution

Work in small sections, starting from the bottom and moving upward to avoid streaking. Dip your brush in the cleaning solution and scrub gently, focusing on any heavily soiled areas.

Step 6: Rinse Thoroughly

Once a section is clean, rinse it immediately with fresh water. Always rinse from the top down to prevent dirty water from running over already-clean sections.

Pressure Washing Tips

If you choose to wash siding with a pressure washer:

• Use the lowest pressure setting possible.
• Keep the nozzle at least 6–12 inches away from the siding.
• Spray at a slight angle, never directly upward, to avoid forcing water behind the panels.

Pressure washing can be effective, but misuse can cause water damage or even crack siding, so take care.

Removing Mold, Mildew, and Algae from Your Siding

If you notice green or black spots on your siding, you may have mildew or algae growth. Mix a solution of one part bleach to four parts water, apply with a soft brush, let sit for 5–10 minutes, then rinse thoroughly. Wear protective gear and be mindful of nearby plants.

When to Call a Siding Professional?

Sometimes, hiring a professional siding cleaning service is the best option. This may be the case if:

• Your home is more than two stories tall
• You have stubborn stains or heavy mildew growth
• You’re uncomfortable using a pressure washer

Professional services have the equipment and expertise to clean siding thoroughly and safely, often in less time.

Maintaining Clean Siding

Once your siding is spotless, keep it that way with simple maintenance habits:

• Trim trees and shrubs to reduce debris buildup.
• Inspect siding regularly for cracks, warping, or damage.
• Clean gutters to prevent overflow that can stain siding.
• Spot clean small areas as soon as you notice dirt or mold.

FAQ: Cleaning Siding

What is the best solution to clean siding?
A mix of mild dish soap and warm water works for most siding. For mold or mildew, add a small amount of bleach (1:4 bleach-to-water ratio) to kill growth effectively.

How often should I wash siding?
At least once a year is recommended, but homes in damp or wooded areas may need cleaning twice a year.

Is pressure washing safe for all siding types?
Pressure washing is safe for vinyl and aluminum if done carefully on a low setting. Avoid using high pressure on wood or fiber cement siding to prevent damage.

How much does it cost to have siding professionally cleaned?
Professional siding cleaning typically ranges from $200–$600, depending on home size, siding type, and level of buildup.

Can I clean siding in the winter?
It’s possible, but spring or fall is ideal since cleaning solutions may not work as effectively in freezing temperatures.

Final Thoughts

Learning how to clean siding doesn’t have to be intimidating. With the right tools, techniques, and a little time, you can wash siding effectively and keep your home looking its best all year long. Whether you take the DIY approach or bring in a professional crew, regular cleaning