Many homeowners believe that instead of replacing an old roof, they can simply install a new layer of shingles on top. While this method, called “roofing over”, may seem like a cost-effective shortcut, it comes with serious drawbacks.
Why Adding Layers Is a Bad Idea
- Excess Weight on Your Home’s Structure
- Each layer of shingles adds significant weight. Too many layers can weaken your home’s structural integrity, leading to sagging or collapse.
- Hidden Damage Below
- If you install a new roof over an old one, you can’t see the condition of the roof decking or detect water damage, rot, or mold underneath.
- Shortened Lifespan
- A second layer doesn’t adhere as well as a single-layer installation. Over time, trapped heat between layers can cause premature aging of the shingles.
The Right Way to Replace a Roof
A proper roof replacement involves removing the old shingles, inspecting the decking, and installing new underlayment and roofing materials.
While roofing over may seem like an easy solution, it often leads to higher costs down the road due to hidden damage. If your roof needs replacement, trust our roofing company near me Wilmette to do it right the first time!