Why Is There Moss and Algae on My Roof and What Can I Do About It?

Noticing a green or black layer on your roof shingles? This could be moss or algae, a common issue affecting many homes. Understanding the causes, impacts, and removal methods, including softwashing, is key to maintaining your roof's health and appearance.

What Causes Moss and Algae Growth on Roofs?

Environmental Factors

Moss and algae love damp, shady areas. Roofs under tree cover or with limited sunlight exposure are at higher risk. Humidity, rain, or dew can further encourage their growth.

Roof Material and Age

Some materials, like wood shingles, are more prone to moss and algae. Older roofs are also more susceptible due to natural wear, which creates small spaces for these organisms.

The Impact of Moss and Algae on Your Roof

Aesthetic Concerns

These growths can significantly detract from your home's appearance and potentially reduce its value.

Roof Damage

Moss can lift shingles, allowing water to seep in and cause leaks or rot.

Removing Moss and Algae from Your Roof

Softwashing

Softwashing is a gentle yet effective method, particularly suitable for older roofs or those in delicate condition. This process involves applying a cleaning solution at low pressure to remove growths without damaging the roof. The cost for a full roof cleaning typically runs around $700, depending on the roof size and condition.

Professional Cleaning

Professional services ensure safe and effective removal, using the right tools and techniques.

DIY Methods

A DIY approach might involve a bleach-water mix or commercial roof cleaners. Apply gently and use a soft brush, avoiding harsh methods like power washing.

Preventing Future Growth

Improve Ventilation

Proper ventilation helps keep the roof dry, discouraging moss and algae.

Trim Trees

Less shade means less likelihood of growth.

Install Metal Strips

Zinc or copper strips near the roof's peak can prevent these organisms from settling.

Moss and algae are more than an aesthetic issue; they can harm your roof. Understanding their growth, removal (including softwashing), and prevention is crucial. Regular maintenance and inspections are vital for a healthy, clean roof.

Preventive measures, timely removal, and professional services like softwashing can help preserve your roof's integrity and appearance, ensuring your home remains beautiful and well-protected.

When you are thinking about repair or replacement for your home, contact Certitude Home Improvements and ask about our softwash roof cleaning options.