Dempsey Roofing & Siding | Roofing Services in Appleton, WI 54913

Appleton, WI 54913

(920) 733-2106

Business Overview

Dempsey Roofing & Siding is a trusted, locally-owned contractor serving Appleton and the Fox Valley. We understand the unique challenges Wisconsin weather poses for your home's exterior, from roof valley leaks caused by heavy snow and ice to the premature aging of shingles from seasonal temperature swings. Our team provides comprehensive solutions, starting with a thorough inspection to diagnose the root cause of leaks or wear. We then offer expert repairs or full replacements using durable, weather-resistant materials designed for our climate. From repairing a leaky roof valley to installing new, resilient siding, we focus on long-lasting protection to keep your Appleton home safe, dry, and energy-efficient for years to come.

What the Company Handles

  • Siding replacement
  • Siding installation
  • Siding repair

Q&A

Can new siding help protect my roof from valley leaks?

Absolutely. While siding and roofing are separate systems, they work together. Properly installed siding with quality flashing creates a critical water barrier at the intersection where the roof meets the wall. This area is vulnerable to the ice dams and heavy runoff common in Appleton that cause valley leaks. Our siding installation includes meticulous attention to these integration points, helping to divert water away from your roof's structure and prevent leaks before they start.

My shingles are aging. Should I consider siding replacement at the same time?

It's often a wise decision for Appleton homeowners. Coordinating roof and siding projects allows us to ensure a seamless, watertight seal between the two systems. When we replace aging siding, we can inspect and address any underlying sheathing damage that may have occurred from worn shingles. Doing both together improves your home's overall weather resistance, can be more cost-effective, and ensures a uniform, updated look for your property.

What siding repair is most urgent if I have a roof valley leak?

The most urgent repair is to the siding and flashing directly adjacent to the leaking roof valley. In our Appleton climate, water from a compromised valley can cascade behind damaged siding, causing hidden rot in the wall structure. We prioritize inspecting and repairing this junction, replacing any rotted wood, and installing new, corrosion-resistant flashing. This stops water intrusion into your walls and is a critical first step before fully addressing the roof valley itself.

Business Location & Hours



Mon:Open 24 hours
Tue:Open 24 hours
Wed:Open 24 hours
Thu:Open 24 hours
Fri:Open 24 hours
Sat:Open 24 hours
Sun:Open 24 hours


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