Why Is My Roof Streaky? Here’s What You Need to Know

If you’ve noticed black streaks, moss, or patches of discoloration on your roof, you’re not alone. These stains are common and may seem like a minor issue at first, but they can lead to bigger problems if ignored.

The most common cause of roof streaking is algae, specifically, a type called Gloeocapsa magma. It spreads through airborne spores and tends to thrive in warm, humid environments. Once it lands on your roof, it starts to grow, especially on shaded areas where moisture hangs around. Over time, you might also see moss or lichen, which can cause even more damage by holding moisture against the surface of your shingles.

These growths aren’t just cosmetic. Algae and moss can wear down your roofing materials, shorten the life of your shingles, and in some cases, lead to leaks or water damage. That’s why regular roof cleaning is important.

So, what’s the best way to clean your roof? It’s not a job for a pressure washer. In fact, using high-pressure water can damage your shingles and lead to costly repairs. Professional roof cleaners use a method called soft washing, which combines low-pressure water with specially formulated cleaning solutions that safely remove algae, moss, and dirt without harming your roof or surrounding landscaping.

A proper roof cleaning usually takes just a few hours and can dramatically improve the look and health of your roof. It also gives a roofing professional the chance to inspect for other potential issues like cracked flashing, loose shingles, or clogged gutters that could cause problems later.

It’s also important to pay attention to any warning signs that there might be a deeper issue. If you notice a musty smell in your attic, signs of water damage on your ceiling, or poor ventilation, there may be moisture getting inside. That could mean your roof needs more than just a cleaning. It might be time to check insulation, repair parts of the roofing structure, or even have the roof replaced. 

Having your roof inspected and cleaned at least once a year, especially in the spring or early summer, is a smart habit. It helps catch small issues before they become bigger problems, protects your home, and keeps your roof looking its best.

And remember, roof work can be dangerous. Between the height, the angle, and the risk of damaging your shingles, it’s not something you want to tackle on your own. Always call a licensed professional who has the right tools, training, and safety equipment to get the job done right.

Your roof is a big part of what keeps your home safe and dry. A little regular care goes a long way in keeping it that way.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Tackling Mold on Your Roof

Mold is a type of fungi that thrives in damp and humid conditions, making your roof a potential spot for growth. While roof mold might not be as noticeable as the mold you see inside your home, it can lead to some serious issues if ignored. Here are a few things to keep in mind about the risks associated with mold on your roof:

Structural Integrity: Mold can weaken your roof’s structure. It can damage shingles, deteriorate wood, and affect the overall stability of your roofing system.

Health Concerns: Mold spores can become airborne and make their way into your home, potentially causing respiratory problems, allergies, and skin irritations.

Energy Efficiency: Mold can compromise your insulation, leading to higher energy bills and a less comfortable indoor environment.

Curb Appeal: A moldy roof isn’t just a concern for your home’s health; it can also impact its appearance and market value.

To keep your home and family safe from the risks of mold, it’s important to take proactive steps. Here are some friendly tips for prevention and remediation:

1. Schedule Regular Roof Inspections: Aim for annual inspections to catch mold early. Professionals can spot potential issues before they become serious.

2. Ensure Proper Ventilation: Good airflow in your attic and roof helps keep moisture levels in check, reducing the risk of mold. Consider adding roof vents or attic fans if needed.

3. Clean Your Gutters and Downspouts: Clogged gutters can lead to water pooling on your roof. Regular cleaning can help prevent this and reduce mold growth.

4. Repair Any Leaks Promptly: Address signs of water infiltration as soon as you notice them. A leaking roof is a prime spot for mold to thrive.

5. Act Quickly on Mold Removal: If you discover mold, it’s important to take action. Hiring professionals experienced in mold removal is the safest way to ensure thorough and effective treatment.

6. Install Zinc or Copper Strips: Consider placing these metal strips at the top of your roof. Rainwater reacts with them to release ions that can help prevent mold and algae growth.

7. Trim Overhanging Trees: Keeping tree branches away from your roof allows for better sunlight and airflow, which can deter mold growth.

8. Choose Mold-Resistant Roofing Materials: When it’s time for a roof replacement, consider materials designed to resist mold growth.

Mold on your roof is a concern that deserves attention. By taking preventive measures and addressing issues promptly, you can protect your home and your loved ones. Regular inspections, proper ventilation, and maintenance are key to keeping your roof healthy. If you find mold, don’t hesitate to seek professional help to ensure your roof stays mold-free. A well-maintained roof not only safeguards your home but also enhances its beauty and value.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Mold in the Home: A Common Problem in Spring 4-4-24

Mold is an issue that most homeowners have to deal with at one time or another. It’s the damaging by-product of excess moisture that can wreak havoc on your home, and more importantly, your health. With spring in full swing, now is a good time to inspect your house for mold and get rid of it before it does any kind of serious damage. 

You might be familiar with mold or mildew from your shower or bathtub. Since the shower is often wet and the tiles are waterproof, water can sometimes seep into the grout. If the grout is old and can’t handle its repelling duties properly, it becomes a breeding ground for mildew which can generally be cleaned with a good scrub. But what happens when mold starts to grow in the places you can’t clean as easily – places like your ceiling, inside your walls, or in the attic? You’re probably saying, “Not in my house”. Well, guess again.

At least half the homes I visit for remodeling projects have a major mold problem and the owners don’t even know it. How? Because mold generally grows in places that you can’t see – like inside the walls and in the attic. What most people don’t realize is that mold reproduces by releasing spores that you’re breathing in day after day.

How common is this? If you’ve ever had a leak, you’ve most likely had a mold problem. So what can you do about it? You can prevent mold by ensuring your home stays dry. Here are my top tips:

1. Keep your gutters and downspouts clean and clear so water can drain away from the foundation of your house. 

2. Make sure the ground around your house doesn’t slope inward towards the foundation where water can idle.

3. Don’t let a leaky roof go unfixed.  Get it patched up immediately and ask your contractor to inspect for any mold growth.

4. Inside the house, beware of any discoloration on the ceiling.

5. Ensure high moisture areas like bathrooms are well-ventilated with good ceiling fans that don’t vent into the attic.

6. If a leak happens in a carpeted area, don’t just leave it to dry. A damp area can attract mold in less than 48 hours.

7. Ensure large appliances such as refrigerators and washing machines have a catchment tray in case of a malfunction.  

8. If you think your house or basement is susceptible to high moisture, consider purchasing a dehumidifier to regulate the humidity and remove any excess moisture from the air.

If you’ve had a mold problem that you’ve tried to control by scraping, cleaning, and repainting the area, don’t make the same mistake twice. If the mold keeps coming back, that means the issue runs deeper than the eye can see. It’s time to call in the pros.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.