# 5 Signs You Need a Roof Replacement in Door County Before Winter
When you live in Northeast Wisconsin, your roof takes a beating. From the heavy snowfalls of Door County winters to the severe thunderstorms that roll off Lake Michigan in the summer, your home’s first line of defense is constantly tested.
As a local roofing contractor serving Sturgeon Bay, Sister Bay, and the surrounding communities for nearly a decade, we’ve seen firsthand what happens when roof repairs are delayed. Waiting too long can lead to structural damage, mold growth, and significantly higher replacement costs.
Before the next Wisconsin winter sets in, here are the top 5 signs that your roof may need to be replaced.
## 1. Missing, Cracked, or Curling Shingles
The most obvious sign of roof damage is visible from the ground. If you notice shingles that are curled at the edges, cracked in the middle, or completely missing, your roof is compromised. Shingles are designed to lay flat to shed water; when they curl or break, water can easily seep underneath and rot the wood decking below.
After a severe storm in Kewaunee or Brown County, it’s always a good idea to do a visual inspection of your roof from the yard. If you spot damage, a professional inspection is the next step.
## 2. Granules in Your Gutters
As asphalt shingles age, they lose the protective granules that shield them from the sun’s UV rays. If you clean your gutters and notice a heavy accumulation of coarse, sand-like granules, your shingles are likely nearing the end of their lifespan. Without these granules, the asphalt will bake in the sun, dry out, and crack much faster.
## 3. A Sagging or Drooping Roof Deck
A sagging roof is a serious warning sign that requires immediate attention. This typically indicates structural issues—often caused by long-term moisture damage rotting the underlying decking or even the roof trusses themselves. If you notice a dip or depression in your roofline, don’t wait. Call a licensed roofing contractor immediately before the weight of a Door County snowfall causes a collapse.
## 4. Water Stains on Your Ceilings or Walls
Not all roof damage is visible from the outside. Often, the first sign of a failing roof is water intrusion inside the home. Check your attic regularly for signs of moisture, daylight showing through the roof boards, or a musty smell. If you see brown water stains on your interior ceilings or walls, your roof is actively leaking.
While a small leak might only require a patch, multiple leaks or widespread moisture damage usually points to the need for a full roof replacement.
## 5. Your Roof is Over 20 Years Old
Age is one of the most reliable indicators of when a roof needs replacement. Most standard asphalt shingle roofs last between 20 and 25 years. If your home in Sturgeon Bay or Algoma still has its original roof from two decades ago, it’s time to start planning for a replacement—even if it looks okay from the ground.
Older roofs are much more susceptible to wind damage and ice dams, making them a liability during harsh Wisconsin winters.
## Don’t Wait Until It’s Too Late
Replacing a roof is a significant investment, but waiting until a catastrophic failure occurs will cost much more in interior repairs. If you’ve noticed any of these 5 signs on your home, it’s time for a professional assessment.
At **The Roofing Company**, we bring over 18 years of contracting experience to every job. We are fully licensed and insured in Wisconsin, and we proudly serve homeowners across Door County, Kewaunee County, and Brown County.
**[Contact us today for a free, no-obligation roof inspection and estimate.](/free-estimate/)** Let us help you protect your home before the next storm hits.