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Other roof products are now offered which fulfill ceramic tile's fire retardant ability, with much less weight put on the roofing system. This type of shingle is called the half-barrel due to the fact that it is basically a cylinder cut in half length-wise, roughly 16 inches long. This Piece Covers It Well or 2nd Layer? It was as soon as common to lay a brand-new shingle roofing over the preexisting layer at least once, or in some cases even two times.

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Even where layering is permitted, applying a brand-new layer of shingles over the old ought to be thoroughly considered on the basis of its benefits and drawbacks: The main argument against laying extra layers of asphalt shingles is that the roofing products can get too heavy for the underlying roofing system framing.

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It is often stated that a triple layer of asphalt shingles is equal to a single layer of slate shinglesan exceedingly heavy kind of material. Another problem with shingling over existing shingles is that you are basically repeating some of the surface area abnormalities that might currently exist. If you're pondering putting on a new roofing, there's probably a likelihood that you may have bubbles, bumps, and waves that should be fixed.

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One method to lessen this problem is to review the old roofing system and correct as many problems as you can in the past re-roofing. It doesn't take much more than a hammer, some roofing nails, and a handful of shingles to remedy bumps, spaces, and extending nails. The primary benefit of layering is that it decreases the work involved.

This isn't a genuine problem if roofing professionals are tackling the jobthey can remove most roofing systems in a morningbut if you're getting the job done yourself, it can be a strong argument for roof right over the old roofing system. Cost Considerations Several factors go into the expense of a roofing, beginning with your option of roofing materials (ranging from inexpensive three-tab asphalt shingles approximately architectural shingles or perhaps slate).