Metal Roof Thermal Expansion Noise

Loud banging noise on my roof when it s cold 6 joist vs.

Metal roof thermal 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. 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. It is possible that the roof popping noise is due to your metal roof pushing against the exposed fasteners. The sun hits your roof and heats it up.

Click here to get tim s free funny newsletter. A quasi static model of the roof. My dwelling has cathedral ceilings and we have a problem with thermal expansion contraction causing a banging noise after sunrise and at sunset. Roof thermal expansion contraction noise research.

Follow on social. Beam subscribe for weekly inspiration. Roof noises may be described as those attributed to an obvious source. As for the popping noise in the morning and evening that s a different mechanism.

Diagonal braces almost always stop the noise. It s thermal expansion and contraction. Thermal expansion one of the main causes of cracking and popping noises that seem to occur randomly in a house mainly deep within the walls floors and ceilings is known as thermal expansion. Metal roof thermal expansion and fasteners.

This paper presents a theoretical analysis of thermally induced noise in sheet metal roofs. Popping in the morning and evening is thermal expansion. Residential structural engineer is the pro to get for a consult. Thermal movement can also cause disturbing noise levels in dwellings with shorter member lengths than those recommended in this section.

Installing an underlayment between the metal roofing and the roof sheathing is a key step to reducing metal roof noise. Roof popping in the wind is flexing the rafters or trusses. 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.

Theory for thermally induced roof noise journal of structural engineering 111 no. This can lead to serious material damage. Subscribe we respect your privacy. Roof popping noise roofing text.