Metal Roof Thermal Expansion Noise

The sun hits your roof and heats it up.

Metal roof thermal expansion noise.

It s thermal expansion and contraction. How much depends on the structure system and installation. In rare cases in one particular roof assembly with standing seam panels the expansion contraction sounds can become louder inside a building. It is possible that the roof popping noise is due to your metal roof pushing against the exposed fasteners.

Sounds can be amplified by friction between the components in assemblies with standing seam roof panels rigid board insulation and metal decking. 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. As the lumber expands it moves and it will rub against other pieces of wood that aren t moving at the same rate. As the lumber expands it moves and it will rub against other pieces of wood that aren t moving at the same rate.

This movement creates the popping noise. In addition its design does not allow metal roof thermal expansion. The sun hits your roof and heats it up. Exposed fasteners often perform poorly due to its likelihood to leak.

This is a step that must be taken during the installation process. If your roof is installed without a proper roof underlayment you will experience the kind of noise that causes people to think buying a metal roof is a bad idea. Installing an underlayment between the metal roofing and the roof sheathing is a key step to reducing metal roof noise. It s thermal expansion and contraction.

On 2017 03 01 by anonymous slate roof prone to cracking noises is a slate roof prone to cracking noises because of thermal expansion and contraction. As for the popping noise in the morning and evening that s a different mechanism. Roof noises may be described as those attributed to an obvious source. I have a high moisture reading in the morning and but the attic temperature is close to the outside temperature and by mid day the spread between the attic and outside increases to around 20 degrees and the moisture reading will goes from wet to dry.

More likely is thermal expansion contraction of metal on roof components such as flashings along a valley or around a chimney. Install a higher quality roof.