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Roofing Guide

Roof Replacement: When, Why, and How

A Waukesha County homeowner's guide to replacing your roof — from the first inspection to the final walkthrough.

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Quick Answer

You should replace your roof when it reaches 20-25 years old, shows signs of widespread granule loss, has multiple leaks, or sustained significant storm damage. In Wisconsin, the average residential roof replacement costs $8,000–$25,000 and takes 1-3 days to complete.

When Does a Roof Need to Be Replaced?

Not every roof issue requires a full replacement. Here's how to know when repair isn't enough:

Signs You Need a Replacement (Not Just Repair)

  • Age — Your roof is 20+ years old with architectural shingles, or 15+ years with 3-tab shingles
  • Widespread granule loss — Dark spots visible from the ground, heavy granules in gutters. Granules protect against UV — without them, shingles deteriorate rapidly.
  • Multiple active leaks — One leak might be repairable. Multiple leaks indicate system-wide failure.
  • Curling or buckling shingles — When shingles curl at the edges or buckle in the middle, they've lost their moisture barrier.
  • Daylight visible through the roof deck — Visible from inside the attic, this means the decking is compromised.
  • Sagging roof sections — This indicates structural damage and is an immediate safety concern.
  • Storm damage affecting more than 30% of the roof — Insurance typically covers full replacement when damage is this widespread.
Free Assessment: Not sure which category your roof falls into? DT Exteriors offers a free 21-point roof inspection with detailed photo documentation. We'll tell you honestly whether you need a replacement or just repairs — and if it's damage-related, whether insurance should cover it.

The Roof Replacement Process Step by Step

Understanding the process removes the stress. Here's exactly what happens when DT Exteriors replaces your roof:

Step 1: Inspection and Estimate (Free)

A certified project manager inspects your roof, attic, and exterior. You receive a written, line-item estimate within 24 hours — no vague "package pricing."

Step 2: Material Selection

Choose your shingle style, color, and profile. We bring physical samples to your home so you can see them against your siding and trim. We recommend options based on your home style and budget.

Step 3: Insurance (If Applicable)

If storm damage is involved, we prepare the full claim scope using Xactimate software. Our project manager meets your insurance adjuster on-site. 98% claim approval rate.

Step 4: Scheduling

We monitor weather forecasts 10 days out. Your project gets scheduled during a clear window. Materials are delivered the day before.

Step 5: Installation Day

Crew arrives at 7:00 AM. Old roof stripped, decking inspected and repaired, full roofing system installed. Magnetic nail sweep of entire property. Most homes completed in 1 day.

Step 6: Walkthrough and Warranty

Final inspection with you present. We register your Owens Corning warranty (up to 50 years on materials + our Lifetime Workmanship Warranty). Your property is left cleaner than we found it.

Roof Replacement Costs in Wisconsin

Real pricing from real projects in Southeastern Wisconsin:

Component Cost Range Notes
Tear-off and disposal $1,500-$3,000 Includes dumpster, labor, and dump fees
Decking repair $75-$150 per sheet 4x8 CDX plywood — average home needs 2-6 sheets
Ice and water shield $500-$1,200 Required on all eaves and valleys in Wisconsin
Underlayment $400-$800 Synthetic felt over entire roof deck
Shingles + installation labor $4,000-$15,000 Biggest variable — depends on material and roof size
Ridge vents/ventilation $300-$800 Critical for Wisconsin climate
Flashing and trim $400-$1,200 Chimneys, skylights, walls, pipes

Financing Options

DT Exteriors offers 0% APR financing with approved credit, with terms from 12 to 144 months. A $15,000 roof can be as low as $104/month over 144 months. No prepayment penalties.

Frequently Asked Questions

Most residential roof replacements are completed in 1-3 days. A standard single-story home is typically done in a single day. Larger homes with complex rooflines, steep pitches, or multiple stories may take 2-3 days. Weather delays are planned for in our scheduling.

Repair if the damage is localized (a few missing shingles, one small leak) and the roof is under 15 years old. Replace if the roof is 20+ years old, has widespread damage, multiple leaks, or significant granule loss. A free inspection from DT Exteriors will give you a clear, honest answer.

Yes. Most homeowners stay home during the replacement. It is loud — especially during tear-off. If you have young children, pets sensitive to noise, or work from home, you may want to plan to be away for the first half of the day. We recommend moving vehicles away from the house to avoid any debris.

We monitor weather carefully and only start projects when we have a clear forecast window. If unexpected rain occurs mid-project, we have tarps ready to cover exposed areas within minutes. Your home will be protected. We never leave exposed decking overnight without tarping.

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