3 Common Roof Leak Locations: Prevention and Repair Tips

Spring has arrived—with its unpredictable moisture patterns, gale-force winds and leftover snowstorms. For Ontario homeowners, that often means pesky roof leaks galore—in many common locations.

3 Common Roof Leak Locations – Prevention and Repair Tips

There are certain areas where roof leaks tend to develop more easily: around chimneys, skylights and in roof valleys. Let’s discuss each in more detail.

Leaking Chimneys. Whether it’s due to aging caulk, cracked cement caps or flashing problems, chimneys are one of the biggest problem areas when it comes to leaks. Many (but not all) chimney leaks can be repaired by peeling off old, dried caulking and roof sealant from around the chimney’s base. Inspect each area of flashing for cracks or damage, and replace flashing as needed. To improve the integrity of your flashing, remember to use a high-quality, flashing cement to re-caulk the area (rather than traditional roofing cements and sealants). If you have a more invasive leak caused by cracked mortar joints, stone or brick displacement, consider calling your local roofer who will perform a thorough roof inspection. The goal is to diagnose and repair the damage quickly.

Leaks Around Skylights. Finding the source of a skylight leak can be tricky, however most skylight leaks occur in the flashing, which marks the point of contact between the skylight and the roof. Often, simply replacing the flashing will solve the leak problem. Another issue is improper installation, in which case skylight leak repair can be a real headache. Other, less common reasons behind skylight leaks are: improperly installed fasteners, poor flashing seals, glass micro-fractures or fissures, sealant failure due to thermal expansion. Some skylight leaks are simple and are easily handled by do-it-yourself homeowners, but if you’re experiencing severe interior effects, such as ceiling staining or flooring damage, call your roofing contractor immediately.

Leaks in Roof Valleys. When two portions of your roof intersect, the resulting line is called a “valley.” Valleys typically contain a type of metal flashing, but in some cases, shingles or tiles may just butt up against one another. Either way, valleys are a common source for roof leaks. If your roof valleys contain metal flashing, it’s possible that the shingles were improperly cut, allowing water to leak behind faulty shingle tips and seep into your attic or down your walls. Valley leaks tend to be more complex to repair than other types of damage, so it’s best to have a contractor handle your roof valley repairs.

Some common roof leaks, if caught early enough, can be fixed by a capable do-it-yourselfer - however, if you ever have any doubts or hesitations, call Trudel and Sons Roofing at (905)642-3515!

Battling a Leaky Roof? You May Need Flashing Repairs!

Leaky roofs are often tricky to diagnose. At best, they’re a nuisance—and at worst, a costly structural nightmare. There are many reasons for roof leaks, and flashing damage is near the top of the list if you’ve ruled out shingles, valleys and ice damming.

What is Flashing?

Metal flashing is often made of tin-coated steel, galvanized steel and copper, and is the material used to “bridge the gap” between roofing materials and non-roofing materials. For example, flashing is found between roof planes, around chimneys, at the termination of roof slopes, around skylights and in roof valleys.

When properly installed, flashing will prevent water from seeping in to your home at the base of chimneys and vent pipes, in roof valley areas, or around exposed windows.
To prevent expensive flashing leaks, make sure you install the appropriate amount and type of flashing. It’s also important to inspect flashing 1 to 2 times a year. Below, you’ll find additional maintenance recommendations.

Flashing Maintenance 101

Over time, flashing may corrode or become loose. Before your roof begins to leak, look for damage to flashing during semi-annual roofing inspections. Here are some tips:

While inspecting your roof shingles and gutters, look for loose nails, fasteners and seals at your shingle edges, around the chimney and in sloped areas where flashing has been applied. As the caulking and silicon sealant applied to the flashing ages and is exposed to weather, it may crack, crumble or pull away. Flashing may simply need to be tacked down or resealed. If you recognize loose flashing, don’t allow it to go unrepaired. Water can literally stream down into your home through improperly sealed joints.

To help new or existing flashing last longer and withstand the elements, prime flashing with a metal primer and seal it with corrosion-proof metal paint that matches your home’s roofing material. This will help to prevent damage due to rust, and will lengthen the life of your roof flashing.
Seal improperly covered seams with urethane roofing cement. This type of sealant is designed to be applied between flashing and shingles or siding to prevent seepage. Remember, if you see a lot of dry, crumbling caulk at the seam, scrape it away with a wire brush before applying a new sealant layer.

Remember that while there are many do-it-yourself ways to maintain the integrity of your flashing, severe flashing damage or home leaks are best left to an experienced roof repair specialist.

Give Your Roofer a Call!

If repairing your leaky roof seems overwhelming, contact Trudel and Sons Roofing, a family-owned & operated Stoufville-based roofing contractor in business since for more than 30 years! Whether your roof needs an inspection, a little patchwork or an overhaul, our insured and licensed professionals are trained to get the job done right—and our work is always guaranteed!

Call (905)642-3515 or visit www.trudelandsons.com to schedule your inspection today!

10 Things to Do in Common Leak Areas

It’s important to make sure a roof is protected at critical areas to avoid coverage problems and not all roofing manufacturer warranties are the same. In order for the homeowner—and the roof—to get the most out of a warranty, it’s important that the contractor ensures a home is well protected from leaks. The right materials can make the difference. Here are 10 things a contractor should do to ensure warranty coverage for a homeowner:

Install waterproof leak barriers at critical areas that are prone to leaks including valleys, side walls, penetrations, chimneys, dormers, and eaves.Use edge metal at rakes and eaves to help protect from water infiltration at the roof’s edges. This is especially critical in high wind areas and colder climates.Install premanufactured flashing at all pipe penetrations to help prevent water entry.Install roof deck protection, also known as underlayment, to ensure shingles will lie flat and to protect against wind-driven rain that can blow under the shingles.Install proper attic ventilation to help manage the attic temperature and prevent moisture from being trapped in the attic space. Shingle roofs last longer when attics are properly ventilated.Install hip and ridge cap shingles to help protect those areas since they get more wind pressure than other parts of the roof. The finished look of hip & ridge cap shingles can also help increase curb appeal.Check skylight conditions. Old skylights should be replaced to better match the new roof’s age; also, new skylights will probably have better energy ratings.Install a single roofing system, like GAF’s Lifetime Roofing System.* When installing components from different manufacturers, mismatches in warranty coverage can occur. A complete system with shingles, leak barriers, hip and ridge cap shingles, roof deck protection, starter strips, and attic ventilation from the same manufacturer will allow all these components to be covered by one warranty and help to avoid finger-pointing in the event of an issue.Take advantage of problem-prevention inspections by factory-certified roof inspectors, when available. For example, when a homeowner buys a GAF Golden Pledge ltd. warranty**, they are entitled to an inspection by a GAF inspector. These inspectors are technical experts who also provide feedback on the installation.Install systems that have transferable warranties. This is a valuable feature to have if you ever sell your property in the future.

For more information on GAF’s residential warranties, see our comparison.