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Other roofing products are now available which meet ceramic tile's fire retardant ability, with much less weight put on the roof.  You Can Try This Source  of shingle is called the half-barrel since it is essentially a cylinder cut in half length-wise, approximately 16 inches long. Detach or 2nd Layer? It was once common to lay a brand-new shingle roofing over the preexisting layer at least once, or often even two times.

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Even where layering is enabled, using a brand-new layer of shingles over the old must be thoroughly thought about on the basis of its pros and cons: The primary argument against laying extra layers of asphalt shingles is that the roof products can get too heavy for the underlying roof framing.

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It is typically stated that a triple layer of asphalt shingles is equal to a single layer of slate shinglesan exceptionally heavy type of material. Another issue with shingling over existing shingles is that you are essentially repeating a few of the surface abnormalities that might currently be present. If you're pondering putting on a new roof, there's most likely a great chance that you might have bubbles, bumps, and waves that must be corrected.

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One way to reduce this issue is to discuss the old roofing and proper as lots of issues as you can in the past re-roofing. It doesn't take much more than a hammer, some roof nails, and a handful of shingles to fix bumps, spaces, and extending nails. The main benefit of layering is that it lowers the work included.

This isn't a genuine problem if roof specialists are dealing with the jobthey can strip most roofing systems in a morningbut if you're doing the job yourself, it can be a strong argument for roofing right over the old roofing system. Expense Factors to consider Numerous elements enter into the cost of a roofing system, starting with your option of roofing materials (varying from inexpensive three-tab asphalt shingles as much as architectural shingles or perhaps slate).