Many homes have vinyl siding, a siding option that is durable, energy-efficient, and affordable. When vinyl siding is clean, it looks good and can make a home look brand new.  However, once in a while, algae on siding may start to form and dramatically decrease the attractiveness of a home. As time passes, the algae will only get worse if it is left unchecked, leaving the home to look dirty and unkempt. This can be quite an embarrassment for homeowners and can be a detriment if homeowners are trying to sell their home. The secrets of algae on siding will be explored here.

What is Algae?

Algae is a living organism that is just a plant. It usually grows in places where dust and dirt have had a chance to collect. These areas are prime locations where the algae can make food because they contain organic material. It can be green on brown and will feel damp. Algae is often confused with mold when it’s found on the side of a home, but the key difference between them is that mold is a kind of fungus and not a plant. Mold is more difficult to remove, while algae can be removed with the right tools to efficiently restore your home to its prior beauty.

Why Shouldn’t Algae Be Left Alone?

Many homeowners think that vinyl siding will simply resist the algae and it will eventually go away on its own, but this is not the case with algae on siding. As long as the conditions are right for the algae to grow, it will continue to do so, and become more noticeable. The fact that the algae can already be seen means that it’s a problem. The algae growth can also mean that something worse is happening behind the scenes. In homes that don’t have a weather barrier under the siding, moisture can become trapped under it. Older homes and homes with improper siding installation are likely to suffer from this problem. The algae act as a visual indicator of this. 

How Can Algae On Vinyl Siding Be Removed Safely?

How Can Algae On Vinyl Siding Be Removed Safely?

A pressure washer is a powerful tool that some homeowners turn to at the first sight of algae. This tool uses a spray of pressurized water to blast away dirt and debris. While a pressure washer may be great for cleaning algae from stone or brick, it’s not a good idea to use one on vinyl siding. The high-pressure water stream can damage the vinyl siding, creating a bigger problem than algae on siding. The damaged vinyl siding will have to be replaced, which requires more time and money than it would take to remove algae.

The best choice to remove algae from vinyl siding is having a professional, like Ruchstars, to do the soft washing. Ruchstars Soft Wash Pros will be able to create a solution that can be applied to the algae, loosening it from the siding. The algae can then be removed without destroying the siding in the process. In between professional washes, quick washes can be done with a garden hose and liquid soap. This will get rid of any contaminants that have already started to stick to the vinyl siding and should be done in between treatments from Ruchstars Soft Wash Pros.

How Can Algae Growth Be Prevented?

Having the algae cleaned away by a professional is an essential process to help keep your home exterior healthy.  Because algae may return it is a good idea to have a scheduled soft wash cleaning at least once a year. All homeowners with vinyl siding need to take preventative measures to minimize the chances of algae on siding coming back. One way to prevent algae growth is by checking for any limbs that may be pressed against the side of the home. Limbs from bushes and trees will deposit matter and moisture on the siding, creating the perfect breeding ground for algae. Any troublesome limbs will need to be pruned back and checked for growth throughout the year.

You can inspect the vinyl siding for any damage or loose parts. This also includes siding that exists around ventilation ducts. Damaged or loose areas can lead to moisture becoming trapped, which results in algae growth. If any damaged areas are found, they should be repaired as soon as possible. Some homeowners will try to fix vinyl siding problems on their own, but it’s better if you contact a home siding contractor to do the job. The contractor can install new siding properly, add weather barriers, and keep the overall cost of the project down. They’ll also be able to offer you a warranty on the services they’ve provided.

Algae on Siding and Your Gutters

Many people don’t realize that improperly maintained gutters can result in the growth of algae on siding as well. When leaves become trapped in gutters, water isn’t able to properly move through them. The water can find its way to the vinyl siding and result in the growth of algae. The same thing happens when there is a breakage in the gutters or the drain pipes leading from them. Regularly removing debris from gutters and repairing any problems will allow the gutters to properly direct water away from the vinyl siding and into the ground.

Sprinkler Systems and Algae on Siding

To add efficiency to home and yard maintenance, many homeowners install sprinkler systems. Sprinklers can be beneficial to a lawn, but to vinyl siding, they can be troublesome. Sprinklers are just another method of delivering water, and some of that water is likely to hit the vinyl siding as it’s coming out of the sprinkler heads, which can result in algae growth. Be sure to adjust your sprinklers to ensure that their water streams aren’t hitting the side of the house. The sprinklers can either be moved away from the house or have their heads adjusted to spray a shorter stream. 

The Bottom Line


If you have vinyl siding, then there is a good chance that you will either have to deal with algae, or you already have. Although the algae is an ugly sight, it can be removed and prevention can be used to keep it from coming back. Stick with a professional cleaner and everything will be fine. Don’t let algae on siding trouble your home any longer, and call Ruchstars Soft Wash Pros today! 

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