Green streaks, fuzzy moss, and piles of leaves on a roof worry many homeowners. Some of it is cosmetic. Some of it can lead to leaks over time. Knowing the difference helps you decide what to do. Algae Dark streaks on shingles are usually algae. They tend to show up on shady, damp roofs. Algae
Moss, Algae, and Debris on Your Roof: Do They Cause Leaks? Read More »
Most leaks do not begin in the middle of a clear slope. They begin at a joint, and one of the most common joints is where a roof meets a wall. That includes dormers, second-story walls that rise out of a lower roof, and additions built onto an older house. Why these joints leak The
Leaks Around Dormers, Additions, and Roof-to-Wall Joints Read More »
An attic that cannot breathe holds heat in summer and moisture in winter. Both can hurt the roof. Some problems that look like roof leaks are actually ventilation problems, and some real leaks get worse because of poor airflow. What ventilation does A ventilated attic has air coming in low, usually through vents under the
Attic Ventilation and Roof Leaks: What Poor Airflow Can Do Read More »
A valley is the channel where two roof slopes meet at an inward angle. Rain and snowmelt from both slopes run into it, so it carries more water than any other part of the roof. A small flaw that would never matter on an open slope can leak badly here. Two ways valleys are built
Roof Valley Leaks: Why the Low Spots Fail First Read More »
A small drip or a faint stain doesn't feel like an emergency, so it is tempting to wait. The size of the mark on your ceiling, though, says little about how much water is getting into the roof. Small stains often sit on top of bigger problems. Learn the signs of a roof leak that
Does a Small Ceiling Leak Require Immediate Roof Inspection? Read More »
Shingles shed water on open slopes. Flashing handles the places where a slope ends or something pokes through it. It is the thin metal, usually steel or aluminum, that lines the edges of chimneys, skylights, walls, valleys, and vents. When flashing fails, water gets behind the shingles at exactly the spots that take the most
Failed Roof Flashing: One of the Most Common Places Roofs Leak Read More »
Roof leaking in Carol Stream? Discover the 11 most common causes of roof leaks—from damaged shingles to failed flashing—and what to do right now to stop water damage.
Why Is My Roof Leaking? 11 Common Causes and What to Do Read More »
