Why Roofing Contractors Don’t Like Roof-Overs

The decision to opt for a roof-over, which is the method of adding a new layer of shingles over existing ones, may seem like a cost-effective solution at first glance. However, seasoned roofers often advise against this approach, with its drawbacks often outweighing their initial appeal. In this blog post, we take a look at some of the reasons roof-overs aren’t recommended.

The Hidden Harms of Trapped Moisture

One of the most pressing issues with roof-overs is the potential for trapped moisture between the old and new layers of roofing materials. This can lead to a host of problems, including mold growth and wood rot, which compromise the structural integrity of your roof and, by extension, your home. This hidden harm can go unnoticed until it’s too late, leading to more extensive and expensive repairs down the line.

Compromised Roof Inspections

Another critical concern with roof-overs is the inherent difficulty in inspecting the condition of the original layer. Roof inspections are vital for identifying potential issues early on, ensuring the longevity and safety of your roof. However, with a roof-over, contractors cannot fully assess the condition of the underlying materials. Roof repair to fix existing issues is no longer possible, potentially leading to serious problems in the future.

Increased Load and Structural Stress

Adding a new layer of roofing materials on top of an existing roof inevitably increases the load on your home’s structural support system. The additional weight of a roof-over can strain the structure beyond its intended capacity. This risk is particularly high in older homes, which may not have been built to withstand the added weight. Over time, this increased stress can lead to sagging or, in extreme cases, structural failure.

Short-Term Savings, Long-Term Costs

While a roof-over might seem like an appealing option due to its apparent cost savings compared to a full roof replacement, this is often a short-sighted approach. The initial lower cost can be overshadowed by the long-term expenses generated by the aforementioned issues. Additionally, roof-overs can void manufacturer warranties on roofing materials, meaning homeowners could end up paying significantly more for repairs or replacements that would have otherwise been covered.

Local Building Codes and Limitations

Local building codes may restrict or entirely prohibit roof-overs. These regulations are in place to ensure the safety and structural integrity of buildings and to prevent the potential risks associated with additional roofing layers.

The idea of a roof over might appear attractive at first glance, but the long-term implications make it a less favorable option for roof replacement. The potential for hidden damage, compromised inspections, increased structural load, and future financial burdens are vital considerations.

At Diamond Roofing Specialist, Inc., we are committed to helping our clients make informed decisions about their roofing needs, focusing on solutions that ensure the safety, durability, and longevity of their homes. Call us at (203) 754-7884, or complete our online form to request a free estimate. We serve clients around New Haven, Bridgeport and Waterbury, CT.