Roofing advantages and disadvantages
The different types of roofing has different characteristics that you should know and evaluate before choosing new roofing. In addition to cost and durability, it is also important to look at the material’s color and detail, as they are of great importance for housing total expression.
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It is difficult to compare different roofing with each other. But there are some properties of roof coverings, which simplified looked good comparable and that can be classified into either good or less good qualities.
In addition, the roof’s appearance does not matter. The roof must fit to the housing, and therefore it is also an aesthetic parameter which can be incorporated as a property. The look is harder to measure as a “good” or “less good” property since it is different from house to house, the roof covering to match it.
Durability is of course interesting for both your economy and because normally link between long life and less maintenance.
An always discussed topic is price compared to life (durability). The reason for such a conjunction that a roofing that lasts for many years, usually are more expensive.
An exception is concrete tile roofs and steel roofs that have long life and at the same time are relatively inexpensive.
Are all take just close? Both yes and no. Generally all take tight, but you go into details, there are roofs that are not quite tight in all situations. For example, there may well be smaller quantities of water through a conventional tiled roof (pantiles), wherein the tiles are not completely close. A wave asbestos- cement roofs, which is screwed from above, on the other hand is almost 100 percent dense. Under the roofs that are not completely watertight, shall therefore an underlay, which will “catch” the moisture or water in special situations will always penetrate. Roofs that do not require underlay, is often cheaper than others.
Material cost is the total cost of the roofing and possibly underlay, but without the cost of assembly / installation of the roof. For example, the material price of copper many times higher than the steel plates (Decra tag).
Installation cost is the cost associated with putting the roof, ie the actual execution, and not the cost of materials. For example, it is easier to mount a wave asbestos- cement and hence cheaper than a new tile roof. A new tile roof has underlayment, which requires a lot more work than if there is no underlay, which corrugated cement roofs should not have.
The mounting cost is closely related to the complexity of the work is, i.e., how difficult it is to execute it. The harder a roof is to do, the more expensive it becomes in working hours. If complex roof structures is performed incorrectly, the consequential damage is typically more severe compared to simpler take. It is therefore important that the work performed by people with knowledge and experience in the field.
Requirements for ongoing maintenance
Some roofs require more maintenance than others. For example, a thatch maintained more often than a zinc or copper, and it obviously has impact on your finances, not to mention the hassle.
Should I choose a heavy or a light roof?
The difference between a heavy roof and a light roof is of the roof weight. Originally the heavy roof covering laid on top of the roof’s wooden structure without being secured. It was only of the roof weight that held the roof in place.
Today there is greater knowledge of wind and storm effects, and there is more focus on attaching heavy take for the rest of the house to avoid the roofing rises or blowing away. The light roofing has always been firmly secured to the roof structure with either nails or screws.
Of the roof weight also affects the structure underneath. Beams and rafters must be able to carry the roofing when the material upstairs is heavy like bricks, concrete tiles or natural slate.
Are you considering setting up solar cells or solar sometime in the future, so it’s a good idea to reinforce the rafters, so they can carry the weight. At the same time you can also prepare the brackets so the installation of solar cells or solar heating can occur without there being done damage to your roof or under eaves. When installing solar cells or solar will always be a risk that damage occurs to your roof or under eaves, which can increase the risk of moisture damage.
Medium Duty roof coverings as corrugated asbestos cement, roofing felt, asbestos cement slates, roof building, copper, zinc and glass roofs does not require as powerful a construction. The easiest roofing metal roofs (Decra) and plastic roofs, which requires only a relatively light and fragile structure underneath.
Under normal circumstances, it is not a problem to put a light roofing on top of a roof construction, which previously carried a heavy roof. In contrast, you must be careful the other way.
Want to put a heavy roof covering on a roof construction where there has been a light roofing material, it can very easily lead to the rafters – and in a few cases also walls – must be strengthened in order to carry the added weight.
In those cases it is a good idea to seek the advice of an engineer who can quickly calculate whether the existing rafters may hold for the new roofing and whether to be propped some rafters with respect to stabilization.