How To Clean and Maintain Shake Shingle Siding

There is something undeniably charming about a home clad in cedar shake shingles. These shingles offer a rustic, timeless aesthetic that blends beautifully with natural surroundings, giving a house character that vinyl or fiber cement simply cannot replicate. However, that beauty comes with a price tag that isn't paid in dollars alone—it requires an investment of time and care.

Unlike synthetic materials that can survive years of neglect with little more than a layer of dust to show for it, wood siding is organic. It reacts to its environment. Without proper maintenance, those beautiful shingles can succumb to moisture, moss, mildew, and eventually, rot. That’s why it is important to clean and maintain your shake shingle siding to avoid any of these issues.

Maintaining shake siding doesn't have to be a nightmare, though. With a consistent schedule and the right techniques, you can preserve the life of your siding for decades.

Understanding the Aging Process

Before you grab a ladder, it helps to understand what is happening to your wood. New cedar shakes have a warm, reddish-brown hue. As the sunlight hits them, UV rays break down the surface fibers, causing the wood to turn a distinguished silver-gray. This color change is natural and, for many homeowners, desirable.

However, there is a difference between a silver patina and black discoloration. If your siding looks dark, blotchy, or green, you aren't looking at natural aging—you are looking at an infestation. Fungi, algae, and moss thrive in damp environments. When these organisms take root in your wood, they hold moisture against the shingles, preventing them from drying out. This constant dampness is the primary cause of cupping, splitting, and rotting.

The Dangers of Pressure Washing

One of the most common mistakes homeowners make is attacking their shake siding with a high-powered pressure washer. It feels like the logical solution: blast the dirt away with force.

But wood is soft, especially when it is wet. A high-pressure stream can strip away the wood fibers, leaving the surface fuzzy and significantly thinned. It can also force water deep behind the shingles, leading to mold growth inside your walls.

Instead, the industry standard for cleaning shake siding is the soft wash method. This relies on chemical solutions to do the heavy lifting, followed by a low-pressure rinse. It kills the biological growth without destroying the wood surface.

Essential Tools and Materials

To clean your siding safely and effectively, gather the following supplies:

• Garden hose with a spray nozzle for rinsing
• Pump sprayer for applying the cleaning solution
• Long-handled scrub brush with soft to medium bristles
• Cleaning solution: You can buy a commercial wood deck and siding cleaner, or mix your own. For tougher mold, some use a weak dilution of liquid chlorine bleach, but be cautious, as this can lighten the wood significantly.
• Safety gear: Rubber gloves, eye protection, and non-slip shoes
• Ladder: Ensure it is stable and get a spotter if you will be going high
• Plastic sheeting to protect landscaping

Step-by-Step Cleaning Guide

Cleaning your wood deck or siding can seem like a daunting task, but with the right tools and a clear approach, you can do it effectively and safely.

1. Protect Your Surroundings

Cleaning solutions, especially those containing bleach, can harm your plants. Thoroughly water all vegetation around the base of your home before you start. Soaking the soil prevents the roots from absorbing the runoff chemicals. Cover delicate shrubs and flower beds with plastic sheeting.

2. Mix and Apply the Solution

Fill your pump sprayer with your chosen cleaning solution. Working in manageable sections (about 10 feet wide), spray the solution onto the dry shingles. Start from the bottom and work your way up to prevent streaking.

Allow the mixture to sit on the surface for about 10 to 15 minutes. You want the chemicals to penetrate the wood and kill the mold spores, but do not let the solution dry completely. If it starts to dry, mist it lightly with more solution.

3. Scrub Gently

Once the solution has had time to work, use your long-handled brush to scrub the surface. Scrub in the direction of the wood grain. This mechanical agitation helps loosen dead algae, dirt, and gray wood fibers. Be gentle; you are cleaning the wood, not sanding it.

4. Rinse Thoroughly

Using your garden hose, rinse the section you just cleaned. Start from the top and work your way down, washing away the chemical residue and debris. Keep the nozzle pointed downward to avoid driving water up under the shingles.

Maintenance Beyond Cleaning

Cleaning is only half the battle. To truly extend the lifespan of your shake siding, you need to adopt a proactive maintenance routine.

Promote Airflow and Sunlight

Moisture is the enemy. Shakes need to breathe. If you have trees, bushes, or vines growing right up against your house, you are creating a microclimate that encourages rot. Trim back tree branches to allow sunlight to hit the siding, which helps it dry out after rain. Keep shrubs pruned at least a foot away from the wall to encourage airflow.

Clear Debris

Dirt and organic debris often accumulate in the keyways (the gaps between shingles). This debris acts like a sponge, holding water. Use a putty knife or a specialized siding tool to gently clear out these gaps. Also, keep your gutters clean. Overflowing gutters can spill water directly down your siding, creating concentrated areas of dampness.

Routine Inspections

Make a habit of walking around your home's perimeter at least twice a year—once in spring and once in fall. Look for shingles that are curling, cupping, or splitting. Another example is loose or missing nails, and signs of pest infestations, such as woodpecker holes or termite trails.

Catching these issues early allows you to replace individual shingles rather than facing a full siding replacement down the road.

Preserving the Charm

Cleaning and maintaining your shake shingle siding adds tremendous value and curb appeal to a home. While it demands more attention than vinyl, the reward is a beautiful, natural exterior that ages gracefully. When you focus on a consistent maintenance routine, you ensure your home remains a source of pride for years to come.

At Forward Distributors, we offer premium composite shake shingle siding that works for your home. This option enhances durability and low-maintenance benefits while still maintaining that classic cider look. You can order siding samples to find the best colors for your home, so browse our catalog today and get ready for a new and improved exterior for your home. You can also call us with any questions at 251-751-4044.