How To Clean Composite Cladding?

Composite cladding panels are an excellent building exterior material. It boasts exceptional durability, rich color textures, and low-maintenance properties. This makes it increasingly favored by homeowners and architects alike. This material is made from a blend of wood fibers and recyclable plastic polymers. It combines the natural beauty of wood with the superior performance of plastic.

However, anything that is left out in the weather needs to be cleaned. Dust, dirt, and even tough spots can build up on composite cladding siding. Cleaning it the right way is important for both keeping it looking good and making it last longer. This article talks about ways to clean composite cladding. You can easily keep your home looking spotless by doing things like regular upkeep and getting rid of tough spots.

Material Properties of Composite Cladding

Before cleaning, you need to understand the material properties of composite wood cladding. These characteristics determine why its cleaning methods differ from wood.

• Polymer Surface: Capped composite cladding has a strong polymer layer on the top that protects it. This shell can protect against stains and UV light. That being said, harsh cleaning methods can still damage this layer. For example, cleaning it with rough brushes, harsh chemicals, or water pressure that is too high can hurt it. This could make the composite deck cladding age faster or make it easier for dirt to build up.
• Color Stability: Composite wall cladding color is infused throughout the material. This means minor scratches are typically less noticeable. Manufacturers like Trex and COOWIN offer composite cladding with excellent fade resistance. However, strong acidic or alkaline chemicals may cause localized fading.
• Resistance to Dirt Buildup: Composite cladding exhibits good stain resistance. Its smooth surface resists accumulating dust and grime. Nevertheless, regular, simple cleaning remains important. This prevents surface dust from transforming into stubborn stains.

Composite Cladding Cleaning Steps

Cleaning exterior siding is not complicated. For composite cladding siding, routine cleaning can be performed every six months. Different brands and series of composite cladding may have specific cleaning recommendations. Be sure to consult the manufacturer’s maintenance manual. The specific cleaning steps generally include:

Prepare Cleaning Tools

Cleaning tools typically include a garden hose, mild detergent, and a soft-bristle brush. Generally, high-pressure washers are not recommended. Incorrect cleaning methods may damage the surface texture of composite wood cladding. If high-pressure washing is necessary, use a fan-shaped nozzle attachment. In addition to cleaning tools, prepare protective gear such as rubber gloves and safety goggles.

Inspect Siding and Surroundings

Before beginning cleaning, thoroughly inspect the condition of the composite cladding. Check for loose, cracked, or damaged panels. If found, secure or repair them before cleaning. Take care to prevent water ingress into internal structures during cleaning. Additionally, pay attention to the surrounding environment.

Carefully put plastic sheets over flower beds, bushes, outdoor outlets, light fixtures, and air conditioners that are below windows. Cleansers and water that stay on surfaces can hurt plants and electrical gadgets. The weather during the cleaning process is also very important. If you don’t want to leave residues on surfaces, don’t work in hot weather.

Clear Surface Debris

Before using water, gently sweep away debris from the cladding surface using a broom, soft-bristle brush, or leaf blower. Remove leaves, cobwebs, and surface dust. This step prevents debris from complicating the cleaning process later.

Next, thoroughly rinse the cladding surface from top to bottom using a garden hose. This removes residual dust and loosened dirt. Pay special attention to the seams between boards.

Apply Cleaning Solution

Use mild soapy water or a composite cladding cleaner recommended by the manufacturer. Ensure the solution is diluted strictly according to the instructions. Before application, always test the cleaning solution on a small, inconspicuous area first. Proceed with full scrubbing only after confirming safety.

Thorough Scrubbing

Gently yet thoroughly scrub using a soft-bristle brush. Follow the texture and drainage direction of the cladding. Work in sections, treating one small area at a time. Immediately rinse each section with clean water after scrubbing.

Finally, use a garden hose to thoroughly rinse from top to bottom. Ensure no cleaning solution residue remains, as residual moisture attracts dust. This can cause the cladding to re-soil and may leave unsightly water stains.

Air Dry Naturally

After you clean the composite cladding, let it dry naturally in the air. During this time, please refrain from touching it. If there is enough airflow, the cladding will dry quickly. Don’t take off the plant protection covers until the cladding is completely dry.

Cleaning Methods for Common Stain Types

Even with regular maintenance, you may encounter stubborn stains. Here are solutions for different situations:

Water Stains

It’s hard to get rid of water stains. A lot of people try to clean their cladding with acidic cleaners, but this can damage the surface. Professionals say that you should use a water stain remover that is made especially for composite cladding. Keep in mind that a power washer with a fan nozzle can help get rid of tough stains. But keep enough space between you and the object and work at a 45-degree angle. Avoid direct impact to prevent surface texture damage.

Grease and Oil Stains

For grease stains, act promptly. Immediately blot the surface with a cloth to absorb excess oil. Do not rub, as this may spread the stain. Apply a small amount of mild household degreaser to the affected area. Let it sit for several minutes, then gently scrub with a soft-bristle brush. Rinse thoroughly afterward.

Mold and Mildew

The wood plastic composite cladding itself possesses strong mold resistance. However, prolonged exposure to damp, shaded areas may still allow mold growth. Generally, soapy water effectively removes mold. For stubborn mold, oxygen-based bleach can be used for cleaning. This is a safe and efficient option that effectively kills microorganisms without causing damage.

Rust stains, Tannins, etc.

Rust stains are typically caused by damp metal furniture or tools. They can usually be scrubbed off with warm soapy water and a soft-bristle brush. Tannin stains originate from plant debris such as leaves and berries. These can be removed using cleaners containing oxalic acid. However, carefully read the manufacturer’s instructions before use. Acidic cleaners may damage your coating’s color.

Deep-Seated Stubborn Stains

If left uncleaned for extended periods, stains may become extremely stubborn. Conventional cleaning methods may prove ineffective. High-pressure cleaning should be reserved as a last resort. A pressure washer is a double-edged sword. Used correctly, it can efficiently remove heavy grime. Used improperly, it can cause permanent damage to the coating.

When using a pressure washer, make sure that the setting for pressure does not go over what the maker says it should be. Use a fan tip and stay at the right distance. Rinse along the grain of the cladding. Keep the nozzle at an angle to the surface and move it evenly and continuously. Never linger in one spot for too long.

Conclusion

It’s not hard to clean composite cladding panels. By cleaning it the right way, you can easily get your composite wood siding to look like it did when you first got it. Cleaning should be part of your regular maintenance plan. For years to come, your composite cladding siding will keep looking great and working great.

If you have any further questions about composite cladding, feel free to contact us anytime. COOWIN has a professional team ready to assist you.

FAQ

Can I Paint or Stain Composite Cladding?

Not recommended. Composite wood cladding does not require painting or staining. Its color is consistent throughout the material. Painting adds unnecessary maintenance work. Paint may also fail to bond well with the cladding surface. It can instead compromise both aesthetics and protective performance.

Will Composite Cladding Fade?

Most materials experience slight color changes when exposed to sunlight. The UV stabilizers in composite cladding effectively prevent fading. Even after years of use, composite cladding retains its color well. Any color change occurs very slowly and evenly, avoiding patchy fading.

Can Bleach be Used to Clean Composite Wood Cladding?

Chlorine bleach is not recommended. Its strong oxidizing properties may damage the material and cause discoloration. Oxygen-based bleach is a safer, more environmentally friendly alternative. Always dilute strictly according to the instructions. Rinse thoroughly with clean water after cleaning to prevent residue.

What is the Lifespan of Composite Wall Cladding?

High-quality composite cladding siding typically has an expected lifespan of 25 years or longer. Proper cleaning and maintenance can extend its longevity. Its durability far exceeds that of most wood cladding.

How to Reduce Cleaning Requirements for Composite Cladding?

Composite cladding itself does not require frequent maintenance. If you wish to minimize cleaning tasks, opt for darker-colored composite cladding. It won’t appear dirty from minor dust accumulation. Additionally, the installation method affects cleaning needs. Vertical cladding resists collecting dust, leaves, and other debris. Rainwater rinses it clean naturally. Horizontal cladding, however, requires more frequent cleaning.