It is safe to say that nobody wants mold inside their home or business—but what about outside? Your property likely extends to a yard or other outdoor space where mold can quickly start to wreak havoc if the conditions are right.
Why does it matter?
Because more often than not, those outdoor spaces have structures made of wood or other materials that can easily succumb to mold growth. From steps and walkways to decks, fences, and storage sheds, outdoor mold growth can be just as perilous when it comes to the health of your family members or your patrons.
How quickly does mold grow outdoors?
Mold grows at a rapid pace as long as it has three key things: moisture, oxygen, and a source of food. This means that any structure located outside your home or business (and continually exposed to the elements) has a high chance of mold growth.
Organic materials such as wood, paper, and fabric are highly porous and the primary food source for mold—making outdoor wooden structures a prime target for mold. This includes:
- Fences
- Steps, walkways, and ramps
- Decks and patios (even screened-in spaces)
- Sheds and storage containers
- Flower boxes
If the surface becomes damp as the result of exposure to rain, snow, or high humidity, mold can start to grow within 24 to 48 hours. Mold also feeds on organic material found in soil, so anything that comes into contact with the ground is more prone to mold growth.
Are non-porous materials immune to mold growth?
You might think so, but no.
Vinyl, aluminum, and other materials that have become popular for outdoor use because of their durability and low-maintenance upkeep are still at risk of mold growth.
This is especially true if your vinyl fencing or aluminum garden beds are located in shadier areas or if you live in an area prone to high humidity. Mold can easily grow in the spaces between fence slats or along the bottom of your garden beds—and let’s not forget that soil and vegetation are also food for mold.
Why is outdoor mold a concern?
Similar to indoor mold problems, mold growing on your outdoor surfaces can lead to a number of issues that could put your health and safety at risk. Three of the biggest concerns with outdoor mold are structural damage, the risk of physical injury, and health issues in both humans and pets.
Structural damage
Mold growth on your wood fences, decks, walkways, and other outdoor structures can quickly lead to rot. Rotted wood can become unstable and precarious, causing it to warp, become detached, or cave in completely. Not only is this extremely dangerous for people walking on or in wooden outdoor structures, but repairs and replacements can be costly.
Injury risk
Many types of mold and mildew are slimy to the touch. This can lead to slick surfaces that may increase the risk of slips and falls, both of which can result in serious physical injury. Whether you own a residential home or a commercial or industrial property, you want to avoid outdoor mold and its potentially expensive fallout.
Health issues
Inhaling mold spores from outdoor surfaces can trigger allergy symptoms in both humans and pets. The most common signs of a mold allergy are coughing, sneezing, runny nose, watery eyes, and trouble breathing. In pets, mold allergies often manifest as skin and ear issues, as well as respiratory problems.
How to prevent outdoor mold
Obviously, any deck, walkway, or fencing outside your home or business will be more exposed to moisture—and thus an easy target for mold growth. However, there are steps you can take to safeguard your outdoor structures and help keep mold away.
- Apply a high-quality sealant. There are countless types of staining and sealing products that help to repel moisture and keep water from seeping into wood and other composite materials, many of which have mold- and mildew-resistant properties to help increase longevity. Reapply regularly for the best results. Pro tip: Never paint or stain over a moldy surface; clean it first and eliminate the mold growth.
- Keep moisture to a minimum. While you may not be able to control the weather, you can take steps to ensure proper drainage and prevent water from pooling where it is not wanted. On your deck, for example, make sure your gutters are clean and water can easily drain away from the house. In addition, make sure outdoor structures are raised and have good air flow beneath them.
- Regularly inspect and clean the area. Nothing invites mold more than neglect. As often as possible, do a thorough inspection of your outdoor space and clean all surfaces to prevent mold growth. Keep trees and shrubs well trimmed, and clear away any excess vegetation that might block sunlight and prevent air flow.
Need help with your outdoor mold problem?
From decks and walkways to fencing, flower boxes, and everything in between, the team at Connecticut Mold Pros can help you determine whether or not outdoor mold growth is a problem. If mold is present, our experienced technicians work quickly to prevent deterioration and protect your home and business.
Call us at (203) 920-0265 or fill out our online form for a free assessment.
