Why You Can’t Force Lichen and Moss Off a Shingle Roof: The Importance of Proper Treatment
As a professional in the exterior cleaning industry Jamie Schmidt from Greenway Pressure Washing says, I often get asked the question, "Why can't you just pressure wash lichen and moss off my shingle roof?" It's a valid question, especially when homeowners are eager to restore their roof to its original beauty. However, what many don’t realize is that trying to forcefully remove lichen and moss can cause significant damage to your roof. The key to success lies in treating the problem correctly, allowing the moss and lichen to die before they naturally come off over time. Here’s why.
What Are Lichen and Moss?
Lichen and moss are both common growths on roofs, especially in areas with high humidity or frequent rainfall. Lichen is a slow-growing organism formed by a symbiotic relationship between algae and fungi, while moss thrives in damp, shaded environments. Though they might look harmless, both can cause damage to your shingles if not handled properly.
The Problem with Pressure Washing
A common misconception is that pressure washing a roof is the best way to rid it of moss and lichen. But this method can do more harm than good. Roof shingles are designed to protect your home from the elements, and they're often coated with granules that provide UV protection and insulation. A high-pressure wash can strip those granules away, leaving the shingles exposed and vulnerable to damage. Worse yet, excessive force can crack or dislodge shingles, creating costly problems for homeowners.
Killing the Growth First
The proper way to deal with moss and lichen starts with treating the growth, not just removing it. These organisms have strong root-like structures called rhizoids that allow them to attach firmly to the roof's surface. Pressure washing won't fully remove these rhizoids, meaning the moss or lichen can quickly grow back if it’s not killed at the root.
Using a safe, eco-friendly roof treatment, we apply a solution designed to kill the lichen and moss. This not only halts the growth but also prevents future infestations. The treatment penetrates deep into the rhizoids, killing the organism at its core.
Patience Is Key: Let It Fall Off Naturally
Once the moss and lichen are dead, it's important to let them come off the roof naturally. Over time, wind and rain will work to break down the dead growth, causing it to flake off the shingles. This process can take a few months depending on weather conditions, but the wait is worth it. By allowing nature to do its job, you avoid the risk of damaging your roof.
Long-Term Protection for Your Roof
Treating moss and lichen properly, instead of rushing to remove them, also helps maintain the long-term integrity of your roof. The treatment helps prevent regrowth, protecting your roof from future infestations and extending its life. Regular maintenance and inspections are key to ensuring your roof stays in top condition.
Final Thoughts
While it may be tempting to use high pressure to quickly remove lichen and moss from your roof, the risks far outweigh the rewards. By choosing to treat the growth first and allow it to die naturally, you’ll avoid unnecessary damage to your roof while ensuring these pesky organisms are gone for good. Patience, in this case, really does pay off, giving you a roof that’s both clean and healthy in the long run.
Trust the process, and your roof will thank you!
Comments