Mildew On Painted Cedar Siding

What you get is a very uniform opaque color.

Mildew on painted cedar siding.

The transparent and semitransparent stains used to preserve cedar s gorgeous good looks are often the culprits that causes mold or mildew growth. The mold and mildew have to be cleared away before new paint is applied. Use a mist or light spray because a strong spray can chip the paint. Many brands make it part of their formula or it can be mixed in as an additive at the paint counter.

It appears to make mildew vanish but on porous surfaces such as wood or vinyl siding chlorine evaporates too quickly to get to the fungi s roots guaranteeing regrowth. Be careful when painting very old cedar siding. Spray the painted cedar siding with water only. So after the last round of mold cleaning and wood restoring we decided to use a newer wood stain product on the market called defy.

The siding must be free from mold mildew and dirt. Then the paint itself should contain a mildewcide. You can dry wood siding using a dehumidifier or a space heater. Even with these precautions the mold and mildew will eventually return.

Oil based stains contain natural substances that. Even then the paint is not expected to last long. Oxygen bleach hydrogen peroxide. These natural elements slowly erode any previous applied finishes and as a result all exterior cedar requires regular cleaning and maintenance to perform and look its best.

Loosened photodegraded surface fibers and any loosened remaining finish must be removed prior to re finishing. Surface preparation is the key to success when dealing with weathered wood. Now the cleaned and brightened cedar wood siding is ready to stain. It really starts before you paint.

In the past he had used oil based wood stain products but found the mold and mildew returning within a few years each time. Dry the siding first if you notice signs of mold growth. Remove the excess and loose grime and filth from the siding. Thus solid color stains let some of the cedar s grain show through but none of the color.

The upside is that solid color stains will block most damaging ultraviolet light. The surfaces of finished western red cedardecks siding and trim boards exposed outdoors inevitably become dirty and may also be discolored by mildew algae and moss. Staining cedar with a solid color stain. For moldy siding wait until the weather is also dry to effectively take.

Solid color stains have solid particles but not nearly as many as paint. While extremely old cedar can be painted it requires heavy preparation.