How to find and fix roof leaks

If you notice water stains on your ceilings and walls, they probably originate from a roof leak. Looking for the leak is a daunting task, but fixing it is quite easy. When you notice a roof leak, you should fix it immediately to avoid spending more money on fixing your ceiling and walls. Even the smallest leak can lead to very big problems: rotted framing, mold, and destroyed insulation. ARS Roofing offers expert roofing services in Marin County and Sonoma County.

How to find roof leaks

When looking for leaks, start by checking the roof penetrations. These areas are the most common culprits for leaks. It is uncommon for leaks to emanate from areas without any roof interruptions – even for old roofs. Penetrations include roof vents, dormers, and chimneys. Do you have attic access? You can track leaks by using a flashlight to look for evidence. If you still do not see the problem, ask another person to get on the roof and hose it down. Stay in the attic and check for areas that are leaking.

Fixing roof leaks

If your leak is originating from the roof vent, you should check for broken seams on metal roof vents or cracked housings on plastic ones. Aside from replacing the damaged vents, there is no other solution. Look for missing or pulled nails at the base of the bottom edge. Do you see small holes on your roof? The fix is not to fill them with caulk; repair the problem with flashing. Water does not always come in through the shingled part of the roof; it can come in from above the roof, especially around corner boards, windows, and siding.

You should not use caulk to cover up a leak; this solution is rarely permanent. You should always try the mechanical fix – repairing the flashing instead of covering it up with sealant. When flashing is not an option, you can use caulk to conceal tiny holes.

Are you looking for roofing services in Marin County and Sonoma County? Contact ARS Roofing for professional services. Whenever you find yourself in a bind, just call (707) 584-5900.


  1. Eli Mcmullen

    I like that you brought up how you can locate roof leaks by entering your attic and inspecting the area with a flashlight. My wife and I recently noticed that our roof has started to leak ever since our area experienced a wind storm last week, and we want to make sure that the decorations in our attic aren’t damaged by water. We’ll see if we can find a professional that can help repair the wind damage that our roof sustained.

  2. Derek Swain

    It helps a lot when you mention how you can spot roof leaks by having someone spray water onto your roof while you are inside of your attic. Ever since it started raining this week, my brother has noticed that some of the antique furniture in his attic has started to warp. Maybe he should find a roofing service that can help him repair any leaks.

  3. Toby Ryan

    I’m thankful that you mentioned how you can check your roof for leaks by having someone hose off your roof in order to see where the water is coming from. My wife and I have started to notice that our cedar shake roofing has started to rot ever since it rained while we were at work last week, and we’re worried that our living room’s hardwood flooring may get damaged if the leak gets worse. We’ll rely on a professional that knows how to fix the kind of roofing that we have.


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