Metal Roof Expansion And Contraction

Successful metal roofing systems require proper attachment procedures provisions for expansion and contraction and expedient removal of water snow and ice from the roof surface.

Metal roof expansion and contraction.

One other method of allowing for expansion and contraction is to design the metal roof panels in a way that allows for an accordion effect in the metal when expansion and contraction occurs. Standing seam roof ssr systems are built to move designed to account for necessary and often substantial expansion and contraction due to thermal conditions. Even with this expectation baked into the mix many contractors and installers may still make a wrong turn when tying the ssr into adjacent structures and other building edge conditions. Metal is a rigid material and as with all rigid materials metal expands and contracts when temperatures change.

This movement creates the popping noise. Instilation of metal roof. Expansion and contraction noise. It is true that metal roofs will expand and contract.

Designing metal roofs for thermal movement. Metal roof systems are composed of metal panels which are typically fabricated from 22 or 24 gage galvanized metal or aluminum and batten fill insulation. Expansion and contraction factors often are overlooked or regarded as insignifi cant in metal roof system design and construction. In the past this could place a tremendous amount of pressure on the roof and ultimately cause it to fail.

Remodeling home consult architect or interior designer first. Thermal expansion contraction is responsible for most roof leaks. In fact for many builders this fact is one of the main reasons ssrs are such an attractive option. It s thermal expansion and contraction.

Metal roof systems can be the least forgiving of all roof sys tems if provisions for expansion and contraction are neglected. These should be mentioned in your report. If you don t take this into account premature roof failure could occur. The sun hits your roof and heats it up.

As the lumber expands it moves and it will rub against other pieces of wood that aren t moving at the same rate. This accordion effect can leave the fasteners securely in place while still allowing the metal to move a bit. During cooler temperatures the metal will contract. In the long run a properly designed weather tight roof will cost less than an improperly designed leaky low cost roof.

This is because metal roofs tend to heat up when the sun rises each morning.