How to Prevent Mold on Vinyl Siding

What You'll Need
Pressure washer
Vinyl cleaner
Bush trimmer or scissors

Mold on vinyl siding is usually the result of accumulated dirt, moisture and a lack of sunlight. There are several ways in which you can effectively prevent the growth of mold on your vinyl siding. Mold can damage the structure of your home and also cause serious, chronic health problems.

Step 1 – Keep the Siding Clean

Regular washing of the siding can keep mold and mildew away. You can use a pressure washer or your garden hose for this purpose. Although pressure washers are highly effective, you must be careful when you use them. Never direct the water upwards to a siding. This will facilitate water collection under the siding and will cause mold problems. To clean the siding, use a vinyl cleaner, bleach or vinegar. Scrub the siding well and wash it well. When you wash the siding, start from the bottom and direct the water downwards.

Step 2 – Trim Back Vegetation

Thick vegetation and overhanging branches are ideal for mold and mildew growth. Look for tree branches over the roof area as well. Mold and mildew can grow on your roof as well and spread to the siding. A well-lit, airy environment is best for the prevention of mold growth.

Step 3 – Check for Signs of Mold and Mildew Regularly

Every month or so, inspect your siding carefully for signs of mold or mildew. Mold is a powdery substance with black dots. Mold and mildew are closely related and the presence of one usually means the other may be present as well. Follow instructions on mildew prevention provided in this article. When you inspect the siding, look closely at areas that are shaded or damp.

Step 4 – Ensure that Water Sprinklers are Directed Away from the Siding

If you have sprinklers in your garden, you must direct them away from your house. The constant spray of water from a sprinkler can quickly lead to moisture problems and mold on your vinyl siding. If you have to water plants close to the siding, make sure you turn off the water or redirect the sprinklers after doing so.

Step 5 – Check Ventilation Ducts

Another important prevention method is to ensure that the ventilation ducts in your home are clear and free of obstructions. Also check that the exhaust is directed away from the siding. Otherwise, the heat and humidity from the duct will contribute to mold growth on the vinyl siding.

Step 6 – Clean Roof Gutters Regularly

An important step towards moisture prevention is to clean the roof gutters regularly. Remove leaves, accumulated debris, bird droppings and other waste from the gutters and ensure that they are clear.

Step 7 – Use a Mildew Resistant Paint

You can prevent the growth of mold on your vinyl siding by painting it with a mildew resistant paint. Such paints are chemically resistant to mold, mildew and other types of fungi.