When you re-roof your house or hire a contractor to do it for you, there are a couple of areas that may create hazards that you should keep an eye out for.

Ventilation

Ventilation pipes that exit through the roof can sometimes become disconnected when the new roof is applied. Besides making sure that these areas have proper flashing to avoid potential water leaks and subsequent damage, it is important to verify that these vent pipes are re-connected completely when the re-roof is completed.If the ventilation pipes are not correctly reconnected, it is possible that harmful gasses could collect in your attic space creating a potential health hazard.It is worth pointing out that most inspection authorities are not required to verify that roof vents have been re-connected.

Punctured Gas Lines

If your home has gas-powered appliances such as a hot water heater, furnace, or generator, it is important to verify that the gas lines, which sometimes run through the attic space, have NOT been punctured accidentally by the roofer. Obviously, a punctured gas line can pose a very serious hazard to the house and its occupants if the gas were to collect in the attic space and ignite.Sometimes gas lines run in the attic’s low slope areas making the lines difficult to completely inspect. Even if you can trace and inspect the entire line, you can be doubly sure there are no leaks by observing the gas meter. Make sure all your gas powered appliances are not running then check the gas meter. If the meter indicates a flow, it is likely there is a leak and the gas lines should be fully inspected.It is important that you verify the integrity of both the roofs vents and gas lines yourself or make sure that your roofing contractor has inspected them.

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