The short answer
Common Causes
Flashing is the metal or rubber strip that seals roof edges, valleys, and pipe penetrations. Over time, the adhesive or caulk holding it down can dry out, crack, or shrink, especially in a climate with wet winters and dry summers. Temperature swings cause the metal to expand and contract, which can loosen the fasteners.
Strong winds can also get under a loose edge and peel it back. Poor installation, such as using the wrong type of sealant or not overlapping pieces correctly, can lead to early failure. If you notice flashing lifting, check for rust or corrosion on metal flashing, as that weakens the material and makes it more likely to separate.
- Aged sealant that has lost its flexibility
- Expansion and contraction from temperature changes
- Wind uplift during storms
- Improper installation or wrong materials
- Corrosion or rust on metal flashing
- Debris or ice buildup pushing against the flashing
Why It Matters
Lifted flashing creates an opening for water to enter your roof system. Once water gets under the flashing, it can travel along the roof deck, soak insulation, and damage the wood structure. Over time, this can lead to ceiling stains, mold growth, and rot in your attic or walls.
Even small gaps can let in significant moisture during heavy rain. Catching the problem early can prevent costly repairs to your roof and the interior of your home. If you see water stains on your ceiling or walls, the flashing might be the source, and you should address it quickly.
What You Can Do
You can inspect your flashing from the ground with binoculars or from a ladder if you are comfortable. Look for curled edges, missing sealant, or visible gaps. If you find small issues, you can reapply a high-quality exterior sealant and tighten loose screws or nails, following the manufacturer's instructions.
For larger areas or if you are unsure about the condition, call a roofing professional to assess the situation. They can reseal or replace flashing sections as needed. In the meantime, check your attic for signs of water entry, such as damp insulation or stains, and dry out any wet areas to prevent mold.
When to Call a Pro
If flashing has lifted over a large area, or if you see water damage inside your home, it is time to get professional help. A roofing contractor can safely access the roof, remove the damaged flashing, and install new material with proper sealing. They can also check for underlying issues like rotted decking.
Water damage that has reached your interior may need more than a roof fix. If you have soaked drywall, insulation, or flooring, consider contacting local water damage pros for extraction and drying. They can help prevent mold and structural decay after a leak. Act quickly to minimize damage.
Prevention Tips
Regular maintenance is key to keeping flashing in place. At least twice a year, inspect your roof for loose or damaged flashing, especially after storms. Clear away leaves, branches, and other debris that can trap moisture against the flashing. Trim overhanging branches to reduce wind exposure.
Keep an eye on the sealant around chimneys, vents, and skylights, as these are common trouble spots. In rainy regions, a little proactive care can save you from a major leak. When in doubt, ask a roofing pro to do a quick check.
Talk to someone now
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (425) 407-5186Frequently asked questions
Can I fix lifted flashing myself?
You can fix small sections if you are comfortable on a ladder. Clean the area, apply fresh exterior sealant, and tighten fasteners. For large areas or if you see water damage inside, hire a roofing professional to avoid making the problem worse.
How long does flashing last?
Flashing lifespan varies with material and exposure. Metal flashing can last decades, but the sealant around it may need replacement every few years. Regular inspections help you catch wear early. If you notice cracking or lifting, reseal promptly to extend its life.
Will insurance cover flashing repair?
Policies vary, and your insurer decides what is covered. Damage from a sudden event like a storm may be covered, while gradual wear from age is often not. Check your policy and document the damage with photos before making any repairs.