If a metal roof sheet is properly installed, then it is expected to last if the house. It seals out water, survives high winds and easily sheds snow. It is a fact that metal is also resistant to fire, mildew, insects, and rot.
The warranties vary widely from companies to companies but most of the products are for a maximum of 20 to 50 years. Though the painted ones typically have a 30-year limited warranty approximately. The weight compared to a 750 pounds’ concrete tile is much less for Metal roofing sheets as it is very light in weight and most of the varieties run from 50 to 150 pounds per square.
As the material is of a very light weight, it helps the buyer to save on engineering and building the supporting structure. Even it also helps to downsize or reduce the number of roof support members. Even types of metal roofing materials can be applied over an exciting roof without the need for any tear – off or any additional structural support.
Most of the Metal roofing sheets are of 12 to 36 – inch – wide panels. If a storm is coming on the way and the roof is stripped off, then it is the best time to install a metal roof panel with considerable labor saving. Metal roofing sheets are non – combustible, as they have a Class A fire rating. Sometimes materials beneath the surface ignite intense heat too. But most of the metal roofs are applied with wood shingles which have a lower class C rating due to this reason.
Metal roof panel also reflects radiant heat from the sun, which minimizes the midday heat intensity too. This means that it helps to save energy for air conditioning. It can also be applied over rigid foam insulation which will help to utilize the dead air space between the metal and the roof deck to increase the efficiency of energy. The minimum metal roofing materials can be installed on pitched roofs too without getting leaked. Though the minimum roof pitch rises for 3 inches for every horizontal foot.
The Metal roofing sheets helps to protect from the rain and from the snow as the panels interlock each other because the surface becomes hard and slippery. The advantage in snowy places is that it quickly warms in the snow, hence encouraging Snow Belt. The dark surfaces get warm in the sun so that the snow melts quickly.
Though the metal roofing panel has its own advantage and some disadvantage too, the best part is that the manufacturers of metal roofing have improved their products to address and solve many other related problems. The biggest drawback is the initial cost of installation and other charges. As the durability of the material is of a long-term matter, hence it also helps in saving the seasonal maintenance of the house. The disadvantage also includes that the sound and the noise of the rain is like a drum beating above the head when the water droplets fall heavily on the metal rooftop.
Though there is also a solution to this. Noise can be controlled by using materials that have a structural barrier which can minimize the drumming effect. Applying sound deadening insulation and solid plywood sheathing also helps in diminishing the noise to a great extent. Another problem is about denting. As aluminium is softer than copper or steel, it is highly prone to denting. Though some painted metal roof can peel, chip, fade, scratch, chalk or even wear out, even with the guarantee of 30 years.