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Table of ContentsReroofing Replacement Vs. Recover – Asphalt RoofingHow To Remove Shingles: A Step-by-step GuideTear Off Vs. Shingle OverProper Steps To Shingle A House Roof

Construction business do not always use the highest quality products, so if you purchased an old home, a roof replacement is a good chance to update. Prior to work begins, your roofing contractor can assist you choose the ideal products for your roof. You may wish to switch from OSB (oriented hair board) to CDX plywood decking or utilize an artificial roof underlayment rather of felt, depending on which is best for your roofing system's structure and your climate conditions.

Throughout a tearoff, your roofer will have the opportunity to completely take a look at all parts of your roofing and make repair work to stop any developing problems prior to they cause major damage. A new, correctly installed shingle roofing can last 20 to thirty years, suggesting it might possibly outlast an overlay by a decade or more.

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This makes a tearoff a wise option if you're planning to sell within the next couple of years. Any boost in the appraised value of your home depends on the condition of your existing roofing system. You'll see a higher boost by changing a degrading, leaking roofing than by replacing a roofing with just cosmetic damage.

How To Remove Shingles: A Step-by-step Guide

It takes a lot more labor to totally eliminate all the existing roof product and after that replace all the layers removed. The old roof also has actually to be disposed of appropriately, which contributes to the cost. cherokee4/ Adobe Stock With this quicker, cheaper alternative, brand-new shingles are set up on top of the existing shingles.

Installing New Shingles Over Old Shingles

Since there's a lot less labor involved in simply setting up brand-new shingles over old ones, an overlay will cost you less than a tearout. Your roofer will not require to rent a dumpster and handle particles disposal policies, so you'll save money on expenses there, too. If you're intending on totally replacing your roof within the next 5 to 10 years, an overlay is an useful method to delight in the look of a brand-new roofing in the meantime.

An overlay can be finished days quicker than a tearoff. That's less time you'll require to spend out of the house, conserving you money and tension. Compared to a total roofing replacement, there's a lot less that can fail throughout an overlay task. There's no risk of a sudden storm disrupting the dry-in process, no falling particles that might harm your patio or your vehicle, and no big dumpsters that could trash your landscaping.

The problem is that without removing the shingles, your roofing contractor can't properly take a look at the roof to learn what condition it remains in. A knowledgeable roofing professional may still be able to spot signs of concealed damage or make an excellent guess based on your roofing system's age, but you're depending on luck at that point.

Can You Nail-over An Existing Asphalt Shingle Roof?

To make matters worse, a roofing system with 2 layers of shingles keeps in more heat, which speeds up degeneration. Usually, an overlay lasts around 16 years. That said, for the majority of shingles, the warranty is legitimate for the same length of time whether the shingles were utilized in an overlay or a tearoff.

Can You Re-roof Over Your Old Roof?

If your home is older or simply rather structurally unsound, an overlay might not be a feasible option. Chances are your old shingles have actually suffered a reasonable amount of wear that's left some of them torn, curling, or irregular. Those damaged shingles supply a low quality base for brand-new shingles, so your brand-new roofing system could turn out noticeably flawed no matter how competent your roofing contractor.

If you're unhappy with the overlay, you could wind up spending for a tearout to have the whole thing redone before you planned. Another layer of shingles adds another layer of intricacy to your roofing. This makes it more difficult to find the origin of any problems that develop. If a leakage kinds, the water will move through both layers of shingles, changing instructions in a manner that conceals the source.

In many cases, unless you make sure your existing roofing is in good condition, a tearoff is the much better option. The lower expense may make an overlay noise tempting, however if it leaves damage lingering under the new shingles, it puts your whole home at danger for moisture problems.

The short response is yes, you can lay brand-new roofing shingles over the old ones. Let's have a look at why some house owners go this path and after that we'll consider a few reasons that we don't recommend it. But before we get going, one thing must be clear: including new roofing over old (sometimes called a "roof over or re-cover") is possible only with asphalt shingles (likewise called "structure shingles").

How To Remove Shingles: A Step-by-step Guide

Likewise, the old roofing needs to remain in pretty excellent shape. Adding extra layers does not make a new roofing system any more water resistant, on the contrary, it often creates its own issues. The reason some property owners pick to do it is to save time and money. By keeping the old shingles on, they avoid the untidy and labor-intensive tear-off action and they will conserve some money on the roofing project.

Getting rid of the tear-off and disposal can quickly conserve $1,000 to $2,000 depending on the size of your roofing system, however you're truly simply postponing the cost: when it's time to replace the roofing again and you have no choice however to eliminate the existing shingles (2 layers is the optimum allowed most areas), you'll have to pay extra for the two-layer tear-off and disposal.

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The following list consists of some factors not to do a roof over in addition to some things to take a look at if you're seriously considering adding a 2nd layer of shingles. Asphalt shingles are indicated to be set up over a plywood deck. When adding a second layer of shingles, the bumps or flaws from the old roofing system will move to the brand-new layer.