1. Attic and ceiling damage
The initial dangers of a roof leak are damage to the attic area and items stored there. If there is no attic, or the size of the leak is really big, it will damage the interior ceiling. Affected ceiling paint will darken and ceiling plaster may bubble and expand. The leaking water also will damage paint and plaster on nearby walls. You can also expect damage on ceiling-mounted lights and fans.
2. Interior mold and mildew issues
In the longer term, one of the most serious consequences of a leaking roof is mold and mildew growth. Mold can spread throughout the home’s structure, to the HVAC system and then to the rest of the house through the vents where it can invade carpets, furniture and even clothing.
Black mold is the most common type resulting from chronic water intrusion. Toxic black mold growth is rare, but even non-toxic black mold attacks wood framing, ceiling tiles, and wall and floor coverings. Mold is difficult to get rid of, and it is rather costly.
cracking and curling asphalt roofing shingles
Crumbling shingles may cause a leaky roof.
3. Health concerns from mold
Mold and mildew can lead to serious health issues, especially for those with high sensitivity, including nasal congestion, rhinitis, inflammations and asthma, according to the U.S. Environmental Protection Agency. Mold spores continue to be produced once it’s present and will lead to allergic reactions, asthmatic symptoms, and more serious health problems.
4. Fire hazard from water damage
If your electrical wiring is present in an attic or ceiling, a leaky roof could pose a fire threat from shorted wires. It is highly recommended to turn off electricity to the area that’s affected and have an electrician examine it.
5. Slip and fall hazard
A severely leaking roof can cause water to puddle on the floor. This may not seem like a huge risk, but if you have an active family, and especially if you have children who like to run, you need to get that water mopped up to prevent human spills.
6. Higher utility bills and wasted energy
High utility bills are another side effect of a leaking roof, as water intrusion is detrimental to the insulation in attic area. Your cellulose or fiberglass insulation becomes saturated and it takes a long time for it to dry out. If a roof leak repair is put off for a long time, chronic water intrusion will deplete the insulation significantly and your home will lose hot and cool air, resulting in higher utility bills.
7. Compromised structural integrity
The most obvious consequence of a leaking roof is the damaged rafters, ceiling joists, wall framing and even fascia boards and exterior trim can become victims of water intrusion. Chronic roof leaks lead to wood deterioration and weakened, rotten roof framing causes serious problems that require assistance from a professional contractor. You can also face expensive wood framing repairs if water leaks down into ceiling joists and walls.