Metal roof paneling has been proven to withstand all sort of weather, lasts a long time, and requires little to maintain. What is more, its makers have extended our choice of finishes, styles and colors to coordinate with and beautify our structures. Technological developments in coatings and finishes have made it possible to develop cool metal roofing which provides greater economy by decreasing energy use and therefore reduces the money we spend to cool or heat our buildings.
There are many questions that come up when you are talking about metal residential roofing. There are numerous choices available, so it is very important that you know about the difference between roofing systems. You will get the maximum benefit from your metal roof only when you are sure that it has the right underlayment, substrate, and finish for your building.
Metal panel roofing has two primary categories which are designated according to how the roof withstands water and the slope of the roof. The first kind is used on roofs that have a low slope that would need water-resistant panels. The other variety, architectural or non-structural roofing, can be used on roofs with steeper slopes and is intended to get rid of the water as quickly as possible.
Normally, in a structural roof, panels are capable of spanning between structural supports, and are joined by clips to the building structure, The floating clip system that fastens the structural panels to the roof allows for thermal expansion and contraction. Since thermal expansion and contraction influences all materials to some extent, structural panels and flashing must be designed in such a way to accommodate that same expansion.
If your roof is compiled of structural metal framework and purlins then it is likely that a structural metal panel roof system would work for you. You want to be able to support the structural load that will be placed on the roof so if you live in an area prone to high winds or heavy snow then it is easy to install the panels over the existing material such as metal, plywood or an oriented-strand board combination.