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Metal roof expansion noise.
The patter or even the roar of falling rain or hail popping and cracking noises perhaps due to thermal expansion and contraction of roof coverings metal roofing or roof structure and transmitted noises from other external sources such as low flying aircraft or nearby trains or auto truck traffic from a nearby highway.
If the noises are simply a product of expansion and contraction in hot and cold temperatures the best course of action is to improve the insulation in your roof to better moderate temperatures and even insulate your home from the sound.
Popping in the morning and evening is thermal expansion.
Metal over open framing.
This can lead to serious material damage.
As the lumber expands it moves and it will rub against other pieces of wood that aren t moving at the same rate.
The sun hits your roof and heats it up.
Roof fasteners hold your metal roof in place.
All metal is going to make some noise with expansion and contraction.
This movement creates the popping noise.
In rare cases in one particular roof assembly with standing seam panels the expansion contraction sounds can become louder inside a building.
Roof noises may be described as those attributed to an obvious source.
Metal roof thermal expansion and fasteners.
Residential structural engineer is the pro to get for a consult.
Approximately 61 decibels according to their tests the difference between shingles and a metal roof is between 6 and 15 decibels depending on how the metal roof is installed.
It is possible that the roof popping noise is due to your metal roof pushing against the exposed fasteners.
Learn about hidden and exposed metal roof fasteners and their roles in thermal expansion from junior construction metal roofing and siding.
For roofs with structural deficiencies roof repair is necessary.
Rigid foam insulation and spray foam insulation are two options that will greatly reduce your noise levels.
The sounds are typically only audible if you re on or near the roof or if the underside of the metal decking is exposed to finished interior space.
They both create a physical barrier between the noise and you and absorb most of the noise before it has a chance to fill your home.
Install a higher quality roof.
Diagonal braces almost always stop the noise.
