They are also extremely fire resistant, although heat and sound travels through sheet steel products with ease. They are light and relatively easy to handle (although extreme care must be taken during windy days), are easy to fasten and quick to install (for professionals, at least), are very strong and, if installed correctly, will last for decades with minimal maintenance. The disadvantage of the system is that once panels are locked together, they are harder to separate compared to sheets that are simply screwed down.Īdvantages of sheet steel products are considerable. This allows for very long tray panels to be used (up to 10 metres long) and is suitable for larger roofs and roofs with concave or convex curves. Sheet metal ‘trays’ are formed from flat sheets with folded vertical edge seams which interlock and are then crimped down to complete the seam. ![]() Ridges are finished with purpose-made capping and, typically, various designs of gutter complete the eaves’ detailing to provide a neat and clean finish to the roof.Īnother technique which uses sheet roofing is the ‘standing seam’ method. Both methods have the edges of the sheets overlapping to prevent water ingress, but concealed fixing systems eliminate piercing of the sheets associated with screw or nail fastening and provide a more reliable weather seal. Sheet steel products are all used in a similar manner: they are either screwed (or sometimes nailed) to wood or steel battens, or they are clipped onto concealed brackets which are screwed to the battens. See for information on the sorts of profiles available. Steel sheet materials come in a wide range of profiles (the shape, corrugated or otherwise, when viewed end-on), including the common corrugated iron, the mini version (such as Lysaght Mini Orb, which is usually used on walls but can be used as a roofing material), as well as profiles more commonly used for commercial roofing although also suitable for some domestic projects, such as Trimdek, Klip-Lok and numerous others. There’s also a stainless steel-based version of Colorbond for extreme coastal environments. These materials are made from thin steel sheet (typically less than 1 mm thick) and are coated in either zinc (galvanised iron), an aluminium/zinc/magnesium alloy (Zincalume) or paint over zinc alloy (Colorbond) coating. ![]() Sheet materials Galvanised iron/Colorbond steel Which roofing you go for will depend in part on the materials and the general look of the rest of the home, as well as your personal preference, which may be determined by a number of factors including appearance, the eco-credentials of the material, the range of colours and styles available, the building method (some roofing materials need more structural support than others), the level of maintenance you are willing to give to the roof, the fire resistance level required, and, of course, the location and hence surrounding environment of the home, including heritage or aesthetic requirements of your local council. Each option has its advantages and disadvantages, each has its own particular look, and each comes in a range of options for that particular material. There are many different roofing materials available, including corrugated iron and Colorbond steel, concrete, ceramic, metal and composite tiles, slate, shingles and even load-bearing panels such as SIPs (structural insulated panels). Plus it’s used to collect rainwater for your home and garden. The roof must also be able to support added structures such as solar panels and solar hot water systems, satellite dishes, ventilation and air conditioning systems, as well as the weight of people walking on it while installing and maintaining such systems. ![]() But of course there’s more to a home than just the walls-roofing is equally important as it not only protects the rest of the building, but also has to withstand the most intense levels of solar radiation of any part of the home, as well as considerable forces from wind, rain and hail. In ReNew 132 we looked at options available for walls when building a home or extension. There are many different roofing materials to choose from, but what are the advantages and disadvantages of each, and how sustainable are they? Lance Turner surveys the market.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |