Should You Remove and Replace Old Shingles or Reshingle Over Them? The Unveiled Truth

Removing old shingles for a new roof installation in Georgetown, KY

Deciding whether to reshingle over old shingles or fully replace them can be daunting for homeowners. This choice is vital for maintaining your home’s safety and aesthetics. In this blog post, we will explore the benefits and drawbacks of both options, favoring the complete removal and replacement of old shingles based on various factors.

Understanding the Basics

To make an informed decision, it’s crucial to understand the terms involved. Reshingling means placing new shingles over existing ones, while removing and replacing involves removing old shingles entirely before installing new ones. This choice affects your roof's durability, efficiency, and appearance significantly.

The Case for Removing and Replacing Old Shingles

Pros of Removing and Replacing

1. Thorough Inspection for Hidden Issues

   By removing old shingles, you gain access to the roof deck and underlayment for a detailed inspection. For instance, rot or mold can compromise your roof's integrity. In one study, homeowners discovered issues in 30% of roofs that were inspected post-removal.

   
   

2. Improved Ventilation

   Installing a new roof usually enhances ventilation, which is vital for preventing moisture buildup. For example, better ventilation can reduce the risk of ice dams in winter by up to 50%, protecting your home from water damage.

   
   

3. Enhanced Aesthetics

   A complete roof replacement lets you choose from a variety of materials and styles to boost your home's curb appeal. Studies show that homes with modern roofs can sell for up to 10% more.

   
   

4. Longer Lifespan

   New shingles placed on clean, well-inspected surfaces last longer. For instance, a new asphalt shingle roof can last 20-30 years, compared to the 10-15 years for shingles installed over old ones.

   
   

5. Increased Home Value

   A new roof significantly elevates your home’s market value. The National Association of Realtors reports that a new roof can return up to 80% of its cost upon resale.

   
   

Cons of Removing and Replacing

1. Higher Initial Cost

   Removing and replacing shingles typically costs more upfront, which can be discouraging for some. The average cost for a full roof replacement ranges from $5,000 to $10,000, depending on materials and roof size.

   
   

2. Unexpected Repairs

   During removal, you may uncover additional problems needing repairs. Estimates suggest that about 20% of roofs need extra repairs once the old shingles are gone.

   
   

The Case for Reshingling Over Old Shingles

Pros of Reshingling

1. Lower Costs

   Reshingling is commonly cheaper, making it an appealing option for budget-minded homeowners. Homeowners can save 20-30% by choosing this route.

   
   

2. Faster Installation

   This method is quicker, often taking only a few hours.

   
   

Cons of Reshingling

1. Hidden Damages

   You miss the chance to inspect the roof properly, which can lead to significant issues over time. A lack of inspection could mean costly repairs later on.

   
   

2. Weight Concerns

   Adding a new layer of shingles increases the weight of your roof. For older homes, this could pose structural challenges, as certain roofs are only designed for one layer.

   
   

3. Shorter Lifespan

   Shingles installed over old layers may deteriorate sooner, leading to more frequent repairs. Many homeowners face issues within just five years as a result of this method.

   
   

4. Limited Warranty

   Many manufacturers void warranties if shingles are layered over existing ones, leaving homeowners without protection against potential defects.

   
   

Making the Right Choice for Your Home

Choosing between reshingle and full removal depends on several local factors.

Climate Considerations

In areas known for severe weather—like heavy rains, snow, and high winds—removing old shingles typically offers more robust protection. Homes in these regions often fare better with a new roof that can endure the elements.

Local Building Codes

Some areas mandate a complete replacement after a specific number of layers. It’s wise to check with local authorities before deciding on a roofing method to avoid potential legal issues.

Age of Your Home

If your home is older and has several shingle layers, removing and replacing is usually the better choice. It ensures your roof is not only structurally sound but compliant with modern standards.

Final Thoughts

While reshingle may seem appealing for its cost-effectiveness and speed, the advantages of removing and replacing old shingles are significant. A complete overhaul allows for valuable inspections, improved ventilation, and aesthetics, and ensures your roof has a lasting life.

Ultimately, investing in a quality roof protects your home and increases its value, making it a decision worth considering for any homeowner.

Before making your final choice, consult a roofing professional to evaluate your situation and help you make the best decision for your property.

Pegasus Roofing & Construction team member showing layers of shingles