One of the most common and costly issues homeowners call on a contractor for is to fix a leaky roof. Not surprisingly, most property owners do not have the expertise (or desire) to get onto their roofs and look for problems themselves.
However, even for a professional, the source of a leak can be elusive because it rarely lines up with where the water is getting into the home. Contractors need to become detectives to correctly identify the source of a leak and understand the path that water travels. Yet all of this pain can be avoided with a comprehensive maintenance program. Even the National Roofing Contractors Association recommends that roof inspection and maintenance be performed regularly to help avoid future problems.
After all, a homeowner wouldn’t expect:
- A furnace to perform efficiently if the filter was never replaced
- A car to run if the oil was never changed
Yet, they install a roof and think that’s the end of the story.
Before an inspection, the contractor should look around from the ground and ask the homeowner if there has been recent extreme weather, animals around the home, leaves, falling debris, trees, satellite or cable work, or an accident that caused damage to the roof.
If it pops through the roof look at it. Penetrations are the most common leak sources and will stop the natural water flow off a roof. Look here first to find the source of the leak:
- Chimneys. The top leak source. Does the chimney have a cricket? Is it properly step flashed and counter flashed? Does it need to be sealed?
- Skylights. Water gets trapped behind them. Is the flashing in good repair? Is the skylight itself leaking?
- Plumbing vents. Do the vent stacks have neoprene or rubber that has cracked with age? Do they need to be sealed or painted? Have critters chewed on the pipe or flashing?
Is the satellite or cable flashed properly?
- Living on the edge. A drip edge is not just aesthetically pleasing, it is important to help ensure water is kept away from the fascia and moved off the roof.
- A common leak source in the leaves and cause of wood rot is a missing drip edge. Wind-driven rain will enter the gap between the roof deck and fascia board.
- A drip edge also helps to keep out insects, critters, and snakes. Make sure to check the drip edge when looking for leaks.
Every step I take. Areas where step flashing should be installed are a common leak source and maintenance item.
Inspect these areas for damage:
- Roof-to-wall transitions
- Wherever low-quality sealant or mastic has been used in the past
What’s in YOUR attic?
Many times, homeowners think the roof is the culprit, but problems can come from improper ventilation, plumbing, air conditioning, condensation, vent fans, and animal or bug infestation in the attic.
Be on the lookout for:
- Algae stains on interior plywood
- The “M” word: mold
- Soaked insulation when it hasn’t rained
- Black rings or rust around nails, which is the first sign moisture is condensing in attic spaces
Is there a lack of ventilation that is causing the attic to overheat or accumulate moisture?
- Are the intake vents clogged with paint, spider webs, dust, or insulation?
Mind in the gutter.
Many homeowners do not realize the importance of their gutters. They need to be installed and sloped properly to drain, tightly fastened, and free of debris. Contractors should stress to homeowners that gutter maintenance should be left to a professional. Advise them of the risks of climbing onto a ladder. Check out our video: “How to Stay Safe” – Mastering the Roof.