Austin Roofing: Article About On Attaching The Roof
Affixing the roofing material to the roof surface requires attention to detail and great consistency. Both metal and asphalt shingle forms of Austin roofing require the use of the proper fasteners and their thorough application.
Asphalt shingles require roofing nails to be correctly attached them to the roof. Roofing nails have broad, flat heads and reasonably short bodies. They are designed to pierce the width of one shingle and nest securely in the wooden surface below them. There is some difference of opinion on how many nails to use on each shingle. Four is sufficient, but some buildings use five, and there are places that require as many as six in their building code. This is more common in places with frequent gale force winds, as the nails are better at holding the shingles on in a storm than they are at resisting the rain. Nails should always covered by layers of shingles above or some other weatherproof barrier. If they are not, then the weather tends to corrode them, and they become points of entry for water.
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Nails are necessary for shingle roofs, as staples are not capable of penetrating the shingles with the necessary force, and screws do not have the flat top surfaces necessary for the shingles to lie flat. A nail gun is strongly preferred for attaching any substantial number of shingles, as they can drive a nail to a consistent depth and do not exhaust the workers.
Metal roofing plates are usually attached to the roof with screws. These screws are often equipped with some sort of seal or gasket that closes the gap around them completely. Since metal tends to be much stronger in large pieces, it is not necessary to use nearly as many fasteners as with a shingle roof. Instead, metal plates are usually affixed at their seams and either covered with the leading edge of the next plate, sealed in some way, or left open to the elements. So long as rain does not pool on the surface above the screw, it is unlikely that it will corrode to the point where it fails. Screws may also be easily removed and reapplied if necessary. Some sort of powered screwdriver or drill is advised for consistent application and valuable saving of time.
The sheer number of nails or screws needed to build a roof can be quite impressive. Professionals tend to buy in bulk in order to save as much on materials as possible.