When your roof shows its age, you face a big decision: tear off the old shingles or
install new ones right over the top. In the Quad Cities, local code allows two
layers—but that doesn’t mean it’s a good idea.
What a Roof Overlay Actually Is
An overlay (or recover) adds a new layer of shingles over the existing one. It sounds
simple and cheaper—and initially, it is. You skip tear-off labor, disposal, and new
underlayment. But you also skip your one chance to inspect what’s underneath.
Hidden issues like rotted decking, loose flashing, or trapped moisture remain
sealed inside. Out of sight, out of mind—until the next storm.
The Case for a Full Tear-Off
A tear-off strips everything to the wood decking. That gives your roofer a clean slate to:
● Replace damaged boards or rot
● Install modern ice-and-water shield barriers
● Re-flash chimneys and vents
● Nail shingles exactly where the manufacturer intends
This approach restores your warranty, improves ventilation, and extends the life of your
roof—often by a decade or more.
The True Cost Comparison
Yes, tear-offs cost a bit more upfront (roughly 10–20% more). But overlays often fail
sooner, require another tear-off later, and can make your roof heavier—sometimes too
heavy for older trusses. When you add labor and disposal from doing the job twice, the
“savings” disappear.
Curb Appeal & Resale Value
Buyers notice a wavy or uneven roof line. That’s a hallmark of an overlay. A clean tear-
off installation not only performs better but also looks crisper, adding instant curb appeal
and confidence during resale inspections.
The Local Takeaway
We’ve replaced hundreds of roofs across Bettendorf, Moline, and East Moline. Every
time we open an old roof, we find something an overlay would have hidden—soft
decking, bad flashing, or even squirrel damage.
In roofing, shortcuts always cost more later.
If you’re not sure which route makes sense, let’s inspect together. We’ll show you
what’s under there so you can make an informed decision.
