Felt roofing, a popular choice for flat and low-pitched roofs, is known for its cost-effectiveness and ease of installation. However, like all roofing materials, felt roofing is not immune to issues. Understanding common problems and their solutions can help you maintain a durable and functional roof. Here’s a guide to the typical problems with felt roofing and how to address them.
Blistering
Problem: Blistering occurs when trapped air or moisture beneath the felt causes the material to bubble. This is often due to improper installation or poor ventilation.
Solution: To fix blistering, you need to release the trapped air or moisture. Carefully cut open the blister, allow it to dry out, and then seal it with roofing adhesive or a patch. Ensure proper ventilation to prevent future occurrences, and consider consulting a professional if the issue is widespread.
Ponding Water
Problem: Ponding water happens when water accumulates on the roof due to insufficient drainage. This can lead to increased wear and potential leaks.
Solution: To address ponding water, improve the roof’s drainage system. Check and clear gutters, downspouts, and drains. You may need to add additional drainage features or regrade the roof to ensure proper water flow. For persistent issues, consult a roofing expert to assess and rectify the problem.
Tears and Cracks
Problem: Tears and cracks in felt roofing can be caused by physical damage, age, or weather conditions. These can lead to leaks if not repaired promptly.
Solution: Small tears and cracks can be patched using roofing cement or a bitumen-based repair kit. For larger damage, you might need to replace sections of the felt. Make sure to clean and dry the area before applying the repair material to ensure a proper seal.
Aging and UV Damage
Problem: Over time, felt roofing can become brittle and lose its effectiveness due to exposure to UV rays and harsh weather conditions.
Solution: Regular inspections can help catch aging issues early. Applying a UV-resistant coating can extend the life of the felt. If the felt is significantly damaged or worn, it may need to be replaced entirely. Consider installing a more durable roofing material if you frequently face issues.
Improper Installation
Problem: Poor installation practices can lead to various problems, including improper adhesion, overlapping issues, and inadequate sealing.
Solution: If you suspect improper installation, it’s best to have a professional roofer assess the situation. They can correct installation errors, ensure proper adhesion, and address any overlapping or sealing issues. Proper installation is crucial for the longevity of felt roofing.
Moss and Algae Growth
Problem: Moss and algae can grow on felt roofing, especially in damp or shaded areas. This growth can cause damage and deterioration over time.
Solution: Remove moss and algae using a gentle roof cleaner or a mixture of water and bleach. Avoid using harsh chemicals that can damage the felt. Regular maintenance and cleaning can prevent future growth. Ensure proper ventilation and sunlight exposure to reduce the likelihood of moss and algae buildup.
Poor Flashing
Problem: Flashing is used around roof penetrations and edges to prevent leaks. If the flashing is improperly installed or damaged, it can lead to water ingress.
Solution: Inspect the flashing regularly for signs of damage or poor installation. Repair or replace damaged flashing with appropriate materials. Properly installed flashing should create a watertight seal and direct water away from vulnerable areas.
Conclusion
Felt roofing offers an affordable and effective solution for flat and low-pitched roofs, but it’s essential to be aware of common problems and their remedies. Regular maintenance, timely repairs, and professional inspections can help extend the lifespan of your felt roof and ensure it continues to perform effectively. If you encounter issues beyond basic repairs, consulting with a roofing professional is always a wise choice to ensure the best possible outcome. Contact us today at Test Valley Roofing, located in Southampton, for expert advice and top-quality roofing services.