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posted by admin, October 24, 2011 Without doubt, metal roofing has lots of advantages and it is confirmed by large sales volume. But as any roofing it has a number of disadvantages, especially such types of metal roofing as profiled sheeting and metal tile. What are their disadvantages? How grave are they? Let us start from deformation. If there are lots of hailstorms in the area, the owners of the building often face a problem of dints in the roofing. It is a pity, but most roofing materials tend to have dints after the hailstorm. Moreover, as copper and aluminum are known as soft metals, roofing made of them has larger dints than roofing made of other metals. The other problem associated with metal roofing is noise, especially when it rains. But this problem can be solved thanks to use of sound insulation materials. Moreover, special construction of purloins can make away with noise. Of course, such roofing is more expensive than corrugated asbestos board which is also widely used today. But its service life is longer. Read More posted by admin, August 16, 2011 Today metal roofing is available in different styles, but the most popular are rustic and vintage styles. Metal roofing in rustic style provides not only protection, but increased value for every home due to its deep wood grain and rugged texture. Looking at your home people may think its roof is made of wood, though in fact it is metal. As a result, you kill two birds with one stone. Your roof looks like wooden, but it does not warp, rot and mold. It resists to stains and does not absorb water like wood. Some companies also offer so-called antique rustic roofing. Depending on finish metal roofing can be painted or rusted. Vintage style roofing often looks like aged steel. It should be said, rusted roofing is a new trend in architecture. There is no need to paint it and it makes this type of metal roofing extremely popular. It does not mean this roofing is really rusted and old. It only looks like so, but in fact it is made of durable weathering steel designed as aged metal. Rusty Corrugated Metal is has aesthetically pleasing finish. Though, somebody may disagree and say there is nothing aesthetically appealing in rusted roofing. This way or another, rusted roofing has its benefits. It contains about 30% of recycled materials and it means this roofing is environmentally friendly. As a rule, metal roofing is made of ASTM A588, A 606 and A 242 weathering steel, also known also as corten steel. Read More posted by admin, July 10, 2011 What facts speak well for metal roofing? Why metal roofing has become a serious rival to traditional roofing materials? It has become popular because of high weather resistance and durability. Most types of metal roofing are covered with various alloys. These alloys can lengthen useful life of the roofing from 20 to 100 years depending on weather and type of alloy. What are the most popular protective coverings used for metal roofing? They are conventional or dull polyester, PVDF (polyvinylidene fluoride), plastisol, pural and zinc-aluminum alloy. Polyester is the most popular and cheap covering, but it has a bad resistance to scratches. Dull polyester is thicker than its conventional analogue and has better resistance to rust and weather effect. Conventional polyester is 25 micron, while dull polyester is 35 micron. PVDF is as thick as both above mentioned protective coverings, but it has excellent resistance to chemicals, rust, fading and bad weather. Zinc-aluminum alloy is as thick as conventional polyester, but it is of better quality. And at last, plastisol is the thickest protective covering of all (up to 250 micron). It is resistant to low temperatures, rust and scratches, but its resistance to temperature drops leaves something to be desired. All types of metal roofing are durable, but each of them has its own peculiarities. Copper roofing is the most long-wearing (more than 100 years), but its color is changed because of the weather effect. Read More posted by admin, June 29, 2011 In fact this information concerns not only metal roofing. Anyway, if you decided to install metal roofing and cannot decide what construction to choose, this article may be helpful. Let us start from the rectangular hip roof. As a rule, its faces are on the square and symmetric about the central line. The overhang at the wall protects it from the bad weather, as well as eaves. Wide eaves make possible to keep the walls of the house cool. Metal roofing itself reflects heat. Combined with such construction it considerably reduces energy bills. There is one more type of the hip roof which has extra faces because of the walls different positions. These extra faces produce so-called valleys. At the top there is a level section which is known as a ridge. The hips sitting on the external corner bound the hip ends and reach the ridge. As such construction may have some problems with leaks, it is not very good for metal roofing without protective coating. The next type is a gable roof. It seems to be better than the previous hip roof, but it does not protect the walls so good. It is because of the gable size which is usually a half as much as the eaves of the hip roof. For example, if the typical eaves are 1000 inches, the gable is 500 inches. In turn, the gable roof provides more space under the roof. Now, let us talk about the shed roof. This construction is rather easy and has a slope angle which makes possible to forget the owner of the metal roofing about problems associated with snow and rain. On the other hand, the owners of the building who decided to install such roof may have problems with the ceiling height which should be no less than 2400. Read More posted by admin, June 28, 2011 In general, metal roofing for residential use is available in two types. They are an exposed fastener roofing system and a concealed fastener roofing system. Metal roofing can be made of galvanized steel, galvalume steel, stainless steel, aluminum, zinc, copper and lead-tin alloy. As a rule, metal roofing made of galvanized steel has a zinc coating to prevent rust. Unlike galvanized steel, galvalume steel has a coating made of aluminum alloy. Minimum grade of metal roofing made of galvalume steel should be AZ50, while that one of galvanized steel roofing should be G-60. Galvalume consists of aluminum (50%), zinc (49%) and silicon (1%). Stainless steel is mostly used without any coating, as well as zinc and copper. All these metals meet the requirements as to metal roofing which has to be resistant to wind, hail, freezing and fire. They do not peel, burn, split, crack and break. Metals reduce heat gain and reflect sun heat. This type of roofing is lightweight, energy efficient and durable. There are plenty of standardized accessories offered by manufacturers. Recommendations on design and installation of metal roofing for residential use depend on the area climate. Read More |
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