Can Metal Roofing Be Installed Over Asphalt Shingles?

Introduction to Metal Roofing Over Shingles

Asphalt metal roofing is a strong and long-lasting option for homeowners seeking an upgrade from traditional asphalt shingles. One major advantage is that, in many cases, a metal roof can be installed directly over existing shingles, saving time and reducing labor costs. This method, known as a roof-over, eliminates the need for a full tear-off, minimizing landfill waste and speeding up installation. However, homeowners must consider key factors like structural integrity, weight capacity, and potential hidden damage beneath the old shingles. In this guide, we’ll explore the benefits, drawbacks, and important considerations of installing metal roofing over asphalt shingles, helping you determine if it’s the right choice for your home.

Can You Install a Metal Roof Over Shingles?

Yes! In many cases, you can install Asphalt Metal Roofing over asphalt shingles. This process, called a “roof-over,” means you don’t have to remove the old roof first. This helps save on labor and clean-up costs. However, you need to make sure your current roof is strong enough to handle the extra weight.

4 Things to Know Before Installing a Metal Roof Over Shingles

1. Your Decking is Covered Up

When you put metal roofing over shingles, the wooden roof deck underneath gets covered. This makes it harder to inspect and repair in the future.

2. Your Old Roof is Already Worn Out

Asphalt shingles wear out over time. If your old roof has a lot of damage, just covering it with Asphalt Metal Roofing might not fix the problem for long.

3. Leaks Are Harder to Find and Repair

With two layers of roofing, it can be tricky to spot leaks. If water gets trapped between the old and new roofs, it could cause hidden damage.

4. Important Roofing Parts Might Not Be Replaced

Things like underlayment and flashing help keep your roof waterproof. If these parts aren’t replaced during installation, your new roof might not work as well as it should.

Which Roof is Best: Asphalt Shingles or Metal Roofing?

When choosing between asphalt shingles and metal roofing, think about your budget, the weather in your area, and how much maintenance you want to do.

Metal Roofing vs. Asphalt Shingles

Durability: Metal roofs last 40–70 years, while asphalt shingles last only 20–30 years.
Weather Protection: Metal roofs handle bad weather better than asphalt shingles.
Energy Efficiency: Metal roofs reflect heat, helping you save on cooling costs.

Many homeowners choose Copper and Steel Metal Roofing because it lasts a long time and stands up to tough weather.

What is a Roof-Over, and When Can You Do It?

A roof-over is when you install a new roof without taking off the old one. This is only possible if the old roof is still in good shape and follows local building codes.

What Affects a Roof-Over?

How much weight your home can support
The condition of the old shingles
Local building rules and regulations

How to Install Metal Roofing Over Shingles

Why Install Metal Roofing Over Existing Shingles?

Saves time and money
Reduces waste in landfills
Adds extra insulation to your home

Ways to Install Metal Roofing Over Shingles

Using Furring or Lathing Strips

Adding wooden strips between the shingles and metal roof creates a gap for ventilation. This helps prevent moisture buildup.

Attaching Metal Panels Directly to Shingles

In some cases, metal panels can be installed right on top of shingles, but you need the right underlayment for protection.

Shingle Recover Systems

These special systems allow metal roofs to go over shingles while still keeping good waterproofing and airflow.

How to Get a Metal Roof Installed?

If you’re thinking about a metal roof, talk to a professional roofer. They can check your home’s structure and suggest the best way to install it.

For the best durability and style, Copper and Steel Metal Roofing is a top choice for homeowners looking for long-lasting protection and a great appearance.

Hafeez Mehsud