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One important element is the roof of the house that serves to protect the occupants from rain and heat. Serve to protect the roof but can also beautify your home if the design harmony. Elements on the roof is divided into two, namely the framework of the roof and cover the roof.

The roof framework

Framework for the roof there are a variety of species, the roof frame made of wood, concrete, steel, mild steel, and mixed. Currently the roof truss being popular is made of lightweight steel.

1. Frame roof made of wood are always there and is the type of roof truss of the most widely used in residences, first because the wood easily available and affordable price, but it used to. current wood prices are higher than steel and require adequate treatment particularly troublesome in the tropics such as Indonesia.
2. Concrete roof truss, is not really a whole framework of the roof is made of concrete but only main beam. Usually for a roof that uses horses and rooftop concrete block, for horizontal beam used iron channel C (CNP), rafters used hollow iron . The advantages of this concrete framework of one of the architectural side, the roof could be exposed so that the use could be minimized ceiling/plafond which automatically will be reduced costs.
3. The roof frame made of steel is usually used as the IWF as main truss, depending on the existing design. When viewed in terms of cost, using a steel roof truss is still cheaper and faster than the rafters are made of concrete. But because the price is relative and changing all the time. accurately compute ratios of types of roofs. because it could just as of this writing uses more steel cheaper than concrete but can be reversed in other time.
4. Lightweight steel roof truss is currently popular, the first since its installation practical, relatively fast (faster than most other rafters), lots of choice (so you can compare from several existing brands in order to get the price and the best quality) . Lightweight steel roof truss consists of two types of galvanized coating and zincallum.
   zincallum, qualitatively better. You can searching internet too find out the brands on the market. Usually warranty given between 10 years to 15 years.

Roof cover

There are a variety of roof cover is used for residential houses, including ceramic tiles, concrete tiles, asphalt bitumen, zincallum, and shingles

1. Ceramic tiles are used as roof covering for centuries, and now there are the kinds of more "sweet" look with color and variety there is in the glazing. Brands on the market were mixed.
2. Current concrete tiles are also very popular even begin to shift the ceramic tile, in accordance with the increasing number of home-style "minimalist". However, although the shape of concrete roof tiles can be flat, heavier than ceramic tiles so that the burden on any roof structure will be greater resulting roof truss used must be more robust to withstand the burden alone. which directly resulted in more expense to the rafters.
3. Asphalt tile bitumen tile is one of the elite class because it looks fancy (even and flat) and a higher price than ceramic tiles and concrete, the multiplex as a base and heat insulator. From the side of the roof of this type very fast, leak proof, and the appearance is beautiful. Then select the alternative framework of the roof and roof cover your expenses according to ability.

Refference : http://www.cement.org/