Is there something growing on your roof? If the answer is yes, it's a good idea to take a closer look. Mold, algae, and moss are common fungus and plant organisms that sometimes take claim on roof tops. While you don't need to panic, these growths should prompt you to figure out why they're developing so that you can take steps to prevent them.
Start by understanding what's growing. The easiest to identify is moss since it typically forms in a bright, green color. However, algae and mold are little more challenging, especially if you have asphalt shingles or slate tile. Algae and mold are both dark in color, but algae is more common and will typically spread faster than mold. So, if it's not restricted to one spot on your roof and is growing fast, it's probably algae.
For all these growths, excess humidity seems to be the common cause for the problem. However, where the humidity problems rest often separates them. Moss and algae are typically indicative of excess moisture in the air, making them the product of an environmental factor. On the other hand, mold is often indicative of a humidity issue in the under-layers of the roof, meaning there could be a roof leak that is causing water to build up.
For moss and algae, if you're reacting quickly enough, these growths can typically be cleaned away. However, if they've been growing for some time, there might also be damage to your shingles, especially if you have wood shingles, so some repair and replacement might be necessary. For mold, cleaning is the first step, but you must also resolve the issue causing the moisture buildup, such as replacing the under-layers of your roof.
Fortunately, preventing these growths is possible, even when it comes to moss and algae. However, it does take some effort on your part. To begin, have any overhanging limbs trimmed away. These limbs block the sun which can slow down the rate at which moisture is able to evaporate from your roof. You should also have your roof inspected, particularly when it comes to mold development. A roofing professional can spot an issue with your roof that can lead to mold before it even begins.
If you have concerns about growths on your roof, this provides an excellent opportunity to call on the assistance of a roofing professional. A professional company like Premier Tri-state Roofing Inc can safely assess your roof to determine what course of action is best suited for your home.