Reasons Many Roofers Don’t Favor Roof-Overs

When it comes to roof replacement, there are two methods that come to mind: a tear-off and a roof-over. The former involves removing old roofing material, exposing and preparing the decking for the replacement underlayment and outer roof covering (i.e. shingles or metal panels). The latter, meanwhile, involves nailing the new roofing over the old system.

Of the two choices, local residential and commercial roofing contractors often favor tear-offs over roof-overs, and for many reasons. We highlight some of them below.

Compromised Roof Deck Inspection

Roof decking is the foundational layer of your roofing system. During a tear-off, the old roof is completely removed down to the decking, which allows a thorough inspection. This helps the roofing pros identify and rectify any underlying issues, such as rotten or broken boards. Unfortunately, a roof-over negates this opportunity, which potentially hides problems, compromising the roofing system’s integrity and setting the stage for future complications.

Structural Weight Concerns

Residential and commercial roofing takes into account the load-bearing capacities of the system. Laying a new roof over the old one imposes substantial strain on the roof structure. Given that some degree of decking deterioration is common during a roof replacement, this extra burden could result in long-term structural damage.

Skipping the Replacement of Vital Components

A roof replacement project is more than just a surface-level undertaking. For example, if the underlying underlayment or other critical components have reached the end of their effective life, a roof-over would cause you to miss out on the chance to replace these materials. The existing underlayment, which may already be compromised, becomes the last line of defense against the elements. This risky avoidance can contribute to premature failure and decreased efficiency of the new roof layer.

Difficulty Identifying Leaks

In the event of leaks, a roof composed of two layers can make it hard for roofers to identify leaks. In case water intrudes the new roof, it can traverse the old roof, tracing a path of least resistance and causing leaks that are difficult to locate and mend. This complexity is further exacerbated by the potential combination of different roof types, each with its own vulnerabilities.

Roof Warranty Concerns

Lastly, a roof-over can potentially void the warranty provided by roofing manufacturers. The terms of these warranties typically require that old roofing materials be fully stripped before installing the new roof. Such a precaution ensures that the new roofing is installed in accordance with best practices, thus retaining the validity of the warranty.

Residents and business owners searching for reputable “roofers near me reviews” will find the name Easton Roofing on their search result, and for good reason. Our experienced team pays attention to the small details that ensure your new roof will keep you covered for years to come. Our team can make sure every component is operating at peak performance, supporting your roof’s function and saving you money in the long run.

To learn more about what we can do for you, give us a call at (913) 257-5426, or fill out our contact page to schedule a free consultation today. We serve homeowners in and around Kansas City.