Table of ContentsRaising The Roof: Can You Lay New Shingles Over OldHow To Put On A Second Layer Of ShinglesOn The Level: Tear Off Old Shingles Before Putting On New RoofUpgrade A Roof With Architectural Shingles

Building and construction business don't constantly use the highest quality materials, so if you bought an old home, a roofing system replacement is an excellent opportunity to upgrade. Prior to work begins, your roofing professional can help you choose the perfect materials for your roofing. You might desire to change from OSB (oriented hair board) to CDX plywood decking or use an artificial roof underlayment rather of felt, depending upon which is finest for your roofing system's structure and your environment conditions.

During a tearoff, your roofing contractor will have the opportunity to thoroughly take a look at all parts of your roofing and make repair work to stop any developing problems prior to they cause severe damage. A brand-new, appropriately installed shingle roof can last 20 to thirty years, suggesting it might potentially outlive an overlay by a decade or more.

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This makes a tearoff a smart option if you're preparing to sell within the next couple of years. Any increase in the evaluated value of your home depends upon the condition of your existing roofing. You'll see a higher increase by changing a degrading, leaky roofing than by changing a roofing system with only cosmetic damage.

Can You Lay New Roof Shingles On Top Of Old Ones?

It takes a lot more labor to entirely get rid of all the existing roof product and then change all the layers removed. The old roofing also has to be disposed of properly, which contributes to the cost. cherokee4/ Adobe Stock With this quicker, more affordable option, brand-new shingles are installed on top of the existing shingles.

Roof Replacement- Can I Add A Second Layer Of Shingles To Existing Roof

Due to the fact that there's a lot less top rated roofers in Tucson - DCRoofingArizona.com labor included in merely setting up new shingles over old ones, an overlay will cost you less than a tearout. Your roofing contractor will not require to rent a dumpster and deal with particles disposal regulations, so you'll save money on costs there, too. If you're intending on totally changing your roofing system within the next 5 to ten years, an overlay is a practical way to delight in the appearance of a new roofing system in the meantime.

An overlay can be completed days faster than a tearoff. That's less time you'll require to spend out of the home, saving you cash and stress. Compared to a total roofing replacement, there's a lot less that can fail during an overlay task. There's no risk of an abrupt storm hindering the dry-in process, no falling particles that could damage your deck or your car, and no big dumpsters that could damage your landscaping.

The problem is that without getting rid of the shingles, your roofing contractor can't correctly take a look at the roofing system to find out what condition it remains in. An experienced roofing professional might still be able to spot indications of concealed damage or make an excellent guess based on your roofing's age, but you're relying on luck at that point.

Can You Re-roof Over Your Old Roof?

To make matters worse, a roofing system with two layers of shingles keeps in more heat, which accelerates wear and tear. Usually, an overlay lasts around 16 years. That said, for a lot of shingles, the warranty stands for the same length of time whether the shingles were utilized in an overlay or a tearoff.

How To Install Architectural Shingles Over 3 Tab Shingles

If your house is older or simply somewhat structurally unsound, an overlay might not be a viable choice. Chances are your old shingles have suffered a reasonable quantity of wear that's left some of them torn, curling, or irregular. Those damaged shingles supply a low quality base for new shingles, so your brand-new roof might end up significantly flawed no matter how experienced your roofing professional.

If you're unhappy with the overlay, you might end up paying for a tearout to have the entire thing redone prior to you planned. Another layer of shingles adds another layer of intricacy to your roofing system. This makes it more difficult to find the origin of any problems that develop. If a leakage forms, the water will move through both layers of shingles, altering direction in a manner that hides the source.

For the most part, unless you're sure your existing roofing system remains in great condition, a tearoff is the much better alternative. The lower expense may make an overlay noise appealing, however if it leaves damage remaining under the new shingles, it puts your whole home at danger for wetness issues.

The brief response is yes, you can lay brand-new roof shingles over the old ones. Let's have a look at why some property owners go this route and after that we'll consider a few reasons we don't suggest it. But before we get begun, one thing should be clear: adding new roof over old (often called a "roofing over or re-cover") is possible just with asphalt shingles (likewise called "composition shingles").

Ask The Expert - Can You Put New Roofing Shingles Over Old Ones?

Likewise, the old roof needs to be in quite excellent shape. Adding additional layers does not make a brand-new roofing system any more waterproof, on the contrary, it frequently creates its own issues. The reason some homeowners select to do it is to save time and money. By keeping the old shingles on, they avoid the messy and labor-intensive tear-off step and they will conserve some cash on the roofing system task.

Eliminating the tear-off and disposal can quickly save $1,000 to $2,000 depending on the size of your roofing, but you're actually simply delaying the expense: when it's time to replace the roofing system once again and you have no choice but to remove the existing shingles (two layers is the optimum allowed a lot of locations), you'll have to pay extra for the two-layer tear-off and disposal.

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The following list consists of some reasons not to do a roof over in addition to some things to check out if you're seriously considering including a second layer of shingles. Asphalt shingles are implied to be installed over a plywood deck. When adding a second layer of shingles, the bumps or imperfections from the old roofing will transfer to the new layer.