602-399-4914 info@newroofaz.com

Replacing a roof can be a time consuming and expensive home improvement project. A roof also is one of the most important aspects of a home as it protects you and your family from the harsh Arizona weather. This is why choosing to install a new roof should be well thought through with all aspects considered to ensure it gets done right. 

One option a lot of homeowners are not aware of, when it comes to a new roof, is you can shingle over your existing roof versus tearing off the existing roof. It is important to understand what each of these options is and the advantages and disadvantages of each. We’re explaining both, roof tear off and roof overlay, to help you when it comes time to replace your roof.

Tear Off

A tear off is a roofing method that is exactly as it sounds – your roofing contractor will tear off your existing roof and then install an entirely new roof.


  • New Everything – Completing tearing off your roof and replacing it entirely with new materials, allows everything to be just that: NEW! This is especially important if there is concern of rotten decking or your roof has been prone to leaks. A new roof will allow these issues to be resolved. 
  • Quality – Since every aspect of your roof is going to be replaced, the quality of your roof is going to increase. High risk areas will be protected with new materials and ensure your home is protected for years to come. As long as it is properly cared for, the likelihood of leaks and rot will decrease. 
  • Longer Life Expectancy – Investing in a tear off roofing job now will last much longer than an overlay roof with two layers of shingles. These layers tend to trap heat and moisture causing serious leaks over time. 
  • Added Home Value – If you are considering selling your home in a few years, a new roof with complete tear off can add significant value over an overlay roof. This could be a potential deal breaker as well if you choose an overlay roof.


  • Expense – Choosing to tear off your existing roof is going to create extra labor cost and cost of materials. If your budget is tight, but you are in need of a new roof, you might want to consider an overlay roof.

Overlay Roof

An overlay roof is defined when your roofing contractor chooses to install shingles over top of your existing roof. 


  • Cost Friendly – The materials and labor cost will be significantly lower for an overlay roof. Simply adding a layer of shingles will take a lot less time and not require the materials to completely replace your roof. This is the primary reason homeowners choose an overlay roof. 
  • Less Disruption – When a roof is being installed, whether a tear off or overlay, it disrupts the life of the occupants. Choosing a roof overlay will take less time, therefore shortening the time your life is going to be disrupted. 


  • Life Expectancy – As we mentioned before, an overlay roof with two layers of shingles tends to trap heat and moisture. You also won’t be able to discover any unknown issues with your current roof. This may cause leaks and rot to form in the short-term and the entire roof needs to be replaced. 
  • Added Weight – Shingles are a heavy material and adding a second layer to your home is going to add a significant amount of weight. Before choosing an overlay roof, consult with a professional roofer to ensure your home can support the additional weight without compromising its structural integrity. 
  • Negative Curb Appeal – Most likely, after years of battling Arizona climate and the elements, your current roof is not level. Placing shingles on top of damaged shingles means your new roof will look less perfect and certainly not as good as a brand new roof would. 
  • The Need to Replace – Without a doubt, if you plan to stay in your home for a few years, you will need to replace your roof. When you do need to replace it, you will also need to tear off two layers of shingles resulting in additional labor costs. You may also discover an issue that was not discoverable before, which will add more cost to your re-roof.

Both roofing options have significant advantages and disadvantages. The key takeaway, is to decide if you have the budget to tear off the entire roof now or simply install an overlay roof for the time being. Craven Construction can help you with your roof, whichever way you decide to go. Call our office at 602-399-4914 to schedule your free estimate.

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About Craven Construction

Craven Construction is dedicated to providing our customers with honest and reliable roofing services. With over 16 years of residential and commercial experience, we are here to serve you and all of your roofing needs.

Our team of experienced roofers is licensed and knowledgeable in working with all types of roofing. We offer high quality roofing services and are capable of getting your project completed in a timely, efficient manner.