Moss on your roof may seem harmless at first, but if left unchecked, it can lead to serious issues. Moss growth can damage the shingles, trap moisture, and eventually shorten the lifespan of your roof. In this article, we’ll walk you through step-by-step instructions on how to clean moss off roof, prevent future moss growth, and maintain the overall health of your roof.
Why Is Moss Growth on Your Roof a Problem?
Moss grows in cool, damp environments, making it a common issue for Canadian homes, especially in shady areas or on asphalt shingles. If not treated, moss growths can cause water to collect on the roof, leading to leaks, mold, and deterioration of the shingles. It’s essential to remove moss as soon as you notice it and take steps to prevent its return.
Tools You’ll Need To Clean Moss Off Roof
Before starting the cleaning process, gather the following tools and materials:
- Garden hose
- Scrub brush (preferably long-handled)
- Plastic sheeting (to protect plants and gutters)
- Dish soap or a moss killer solution
- Zinc strips (for long-term moss prevention)
- Ladder and safety gear
Step-by-Step Guide on How to Clean Moss Off Your Roof
1. Prepare the Area
Before you begin roof cleaning, protect the area surrounding your house by laying plastic sheeting over garden beds, walkways, and gutters. Moss cleaning solutions and runoff may damage plants, so it’s essential to cover them up.
2. Remove Loose Moss
Start by using a garden hose to spray the roof with water. Avoid using a pressure washer, as it can damage the shingles. Instead, aim a gentle stream at the moss to loosen it. With a long-handled scrub brush, gently scrub off the loose moss. Be careful not to apply too much force, as this can remove or damage the asphalt shingles.
3. Apply a Moss-Killing Solution
For stubborn areas, mix a solution of dish soap and water, or use a commercial moss killer. You’ll need about 5 gallons of water mixed with a cup of dish soap or the recommended amount of moss killer. Apply the mixture generously over the remaining moss and let it sit for about 20 to 30 minutes. This solution kills moss and prevents it from regrowing.
4. Rinse the Roof
After the solution has had time to work, rinse the roof with a garden hose. Make sure all of the moss killer is washed off thoroughly. Again, avoid using a pressure washer to prevent damaging the shingles.
5. Inspect and Remove Remaining Moss
After rinsing, check for any remaining moss. Use the scrub brush to remove any remaining patches, being cautious not to damage the roof’s surface. Repeat the process if necessary.
6. Prevent Future Moss Growth
One of the most effective ways to prevent moss from returning is to install zinc strips along the roof’s ridge. When it rains, zinc ions wash down the roof, creating an environment where moss cannot thrive. Regular maintenance and cleaning are also key to keeping moss growth in check.
Important Tips for Roof Cleaning
- Avoid Harsh Chemicals: Some chemicals may kill moss but can also harm your roof and surrounding plants. Stick to mild solutions like dish soap or environmentally friendly moss killers.
- Safety First: Always use a stable ladder and proper safety gear when working on your roof. Roof cleaning can be dangerous, so if you’re unsure, consider hiring a professional.
- Do Not Use a Pressure Washer: Pressure washers can force water underneath shingles, leading to leaks and further damage to your roof. Stick with a garden hose for rinsing.
Why Regular Roof Maintenance Matters
Keeping your roof free from moss isn’t just about appearance. Moss traps moisture against the shingles, which can lead to rot, decay, and costly repairs down the line. Regular inspections, cleanings, and the installation of zinc strips can save you money and extend the lifespan of your roof.
If you’re unsure about performing this task yourself, ClearView Home Services offers professional roof cleaning services across the Lower Mainland. We use safe, effective methods to remove moss and prevent future growth. Learn more about our roof cleaning services here.
FAQs About Cleaning Moss From a Roof
How often should I clean moss off my roof?
It’s a good idea to inspect your roof once a year and remove moss as soon as you see it growing. Early removal prevents moss from causing damage.
Can I use bleach to clean moss off my roof?
Household bleach can be harsh on both your roof and the surrounding environment. It’s better to use a mild cleaning solution like dish soap or a commercial moss killer designed for roofs. However, it’s better to hire a professional who knows how to create a professional mix of sodium hypochlorite that is safe for the environment as well your home.
How do zinc strips prevent moss from growing?
Zinc strips release ions when it rains, creating an environment that inhibits moss growth. Installing these strips can greatly reduce the chances of moss returning to your roof.
By following these steps, you can safely and effectively remove moss from your roof and keep it in great condition. However, if you’re looking for a more convenient solution, ClearView Home Services offers professional roof cleaning, gutter cleaning, and window cleaning services to ensure your home looks its best year-round. Contact us today to schedule your next service!
