Maximize Durability: Pro Tips For Metal Roof Installation

Maximize Durability: Pro Tips for Metal Roof Installation

By Angelina Zhuravleva  •  November 28, 2022  •  6 min
Maximize Durability: Pro Tips for Metal Roof Installation

Metal roofs are a good choice for your home. Like other materials, metal roofs come in various types and styles. With proper care and maintenance, they can last for decades.
While metal roofs are more expensive than other types of roofs, they can be a wise investment in the long run. They are also more durable and withstand extreme weather conditions better than other materials. If you're thinking about installing a metal roof on your house, there are a few things you need to know before you start.

This article will cover some common questions about metal roofs, including how to install a metal roof and the most common types of metal roofing panels available.

What You Need To Know Before Installing Metal Roofing 

A metal roofing contractor is installing a new roof.

So you've decided to install metal roofing on your house. It's a great decision that will save you money in the long run Before installing a metal roof, you will need to inspect the roof, address problems with the decking, and make necessary repairs.
When the roof deck is ready, the installation process can begin. Insulation, felt underlayment, a slip sheet, and metal panels of your choice need to be installed. A metal roof requires numerous layers of material and specialized knowledge; only an experienced contractor should perform this task.

Should You Install Metal Roofing Over Shingles? 

One of the most common questions about metal roofing is whether to install it over existing shingles. The short answer is: it depends.
In many areas of the US, local building codes state that you can't have more than one roof over an existing one. Because of this, checking with your contractor about building code compliance is essential before proceeding with the metal roof installation.
Another consideration is that metal roofs are designed to last more than 40 years. So if you don't get the entire shingle off, you won't be able to see other underlying problems and how much plywood needs to be replaced. So before putting on a long-term roofing system on top of the old one, it's necessary to check the existing roof's condition and consult a specialist.

Metal Roofing on a Shed 

Garden shed with metal roofing

Installing metal roofing on a shed is a great way to protect and keep your belongings safe and dry. You'll need to measure the roof and purchase the right size of metal roofing, buy roofing nails, a drill, and metal roofing screws.
When installing a metal roof, it is necessary to pay attention to all warnings and recommendations from the manufacturer. Make sure to purchase the corresponding accessories: edging pieces, ridge caps (if applicable), and screws to accompany your chosen metal roof type.

How to Install Metal Roofing Over Plywood 

It is not recommended to install metal roofing directly over bare plywood. Felt underlayment and a slip sheet should be installed to prevent damage to the felt.
If you install metal roofing directly on plywood without waterproofing felt sheets, you significantly increase the leak risk. Premature wood rot may also occur if humidity can build up between the metal and the plywood.

How to Install Metal Roofing on a House 

One of the great things about metal roofing is its versatility. It can be installed on various surfaces, including roofs with a slope, roofs with a flat surface, and even sheds.

So how do you go about installing metal roofing on the house? The process can vary depending on the type of metal roofing you choose. Hiring a professional to install a metal roof can be a worthwhile investment. They will inspect your roof, answer all your questions and recommend the best option that fits you.

Steps For Installing Metal Roofing:  

  1.   Inspect and repair the plywood on the roof. If it has not been replaced recently, there could be rotting or warped wood that needs to be replaced.
  2. Install insulation under metal roofing if it's needed. 
  3. Install a felt moisture barrier. These rolls of felt come infused with asphalt or tar and are used to keep humidity, rain, and other moisture out of the plywood underneath.
  4. Install a slip sheet, a heavy, smooth paper that protects the felt from the metal sheeting.      
  5. Install insulation under metal roofing. 
  6. Install metal roofing over protective layers. 
  7. Get a workmanship and manufacturer warranty from the contractor.  

All these steps should only be undertaken by a professional with a good understanding of the process.

How to Install Metal Roofing on a Flat Roof 

If you're looking to install metal roofing on a flat roof, it's essential to consider a few things. First, you need to ensure that your roof can support the weight of the metal sheeting. Second, you'll need to install insulation under the metal roofing to prevent moisture from building up.

And finally, you'll need to ensure that the roof is adequately ventilated. Otherwise, the metal sheets could buckle in extreme weather conditions. If you're unsure how to properly install metal roofing on a flat roof, it's best to consult a professional. Directorii has the best metal roofing contractors near you. So, begin your search today, and get free estimates from the best roofing contractors in your area.

How to Choose Metal Roofing Insulation 

Insulation is integral to any roofing system and is imperative when using metal roofing. That's because metal is a good conductor of heat, and without insulation, you could end up with a lot of heat loss in the winter and a lot of heat gain in the summer. So what metal roofing insulation to choose? 

Here are the most common materials:

Fiberglass Batts: Fiberglass insulation is a thick insulating pad composed of glass fibers woven together with other materials. Fiberglass is the cheapest metal roof insulation option. Still, it's also the most dangerous because of its tiny shards of glass, which can damage and irritate skin, eyes, and lungs. As such, anyone working with fiberglass should wear protective gear.

Foam Board Insulation: Foam insulation provides thermal resistance to the foundation, roof, and walls. The material comes in sheets or panels made from polystyrene or polyurethane. When installed correctly, it can offer maximum thermal resistance.

Spray Foam Insulation: Polyurethane foam is a type of insulation mixed with water and applied through high-pressure spray machinery as a heated liquid. When the liquid reacts with the oxygen in the air, and the water dries up, it expands 30x times and cures within minutes. It results in thick and rigid foam often used for metal roofing.

How Long Does a Metal Roof Last? 

Rain falls down the side of a metal roof.


A metal roof can last anywhere from 40 to 70 years, making it an excellent investment for your home. But how do you ensure that your roof lasts as long as possible?

Maintaining a metal roof by regularly removing debris and checking the roof and vents for any damage that needs to be repaired is vital. You should also check the gutters and seals around the roof to ensure they're watertight.

Metal Roofing Panels 

Metal roofing panels types


There are many advantages to installing a metal roof, including its low maintenance and durability. Suppose you are interested in this type of roofing material. In that case, you should know that there are many types and styles of metal roofing materials. Here is a list of the most common ones:

  1.  Aluminum is a lightweight, rust-resistant material ideal for coastal environments. The salt spray from the sea will not affect an aluminum roof, but it would quickly rust a steel roof.
  2.  Copper roofing is one of the most expensive types of residential roofing. It will develop a protective layer and change color over time, going from looking like a new penny to blue-green or brown. The patina will vary depending on the climate it's exposed to.
  3.  Zinc roofing is a very long-lasting, expensive, and striking material. When exposed to moisture and carbon dioxide in the atmosphere, it forms a protective layer of zinc carbonate, which results in a beautiful blue/gray patina.
  4.  Steel is the most common type of metal roofing, offering longevity and durability. Non-galvanized steel is less expensive than galvanized steel. Still, it will rust when it's exposed to high humidity. To ensure your steel roof's longevity, consider steel roofing products with an additional layer of protection against corrosion.

Take a look at this article to learn how much it costs to replace your roof. 

Metal Roofing Contractors Near You 

Before you choose a metal roof, it's integral to research your options and consult with a professional. Many types of metal roofs are available, each with its own benefits and drawbacks. An experienced roofer will help you choose the best option for your home and offer a warranty on workmanship along with the manufacturer's warranty.

It's crucial to find a qualified roof installer who knows how to work with metal roofing. Directorii is a service that connects homeowners with vetted roof installers in their area, so you can rest assured that you're working with a qualified professional.

Take the time to research your options and find the best metal roof for your home. Then, work with a qualified installer to have it installed professionally. And make sure you register a project on Directorii to claim your $20,000 Guarantee. Begin your search for a qualified roofer today!

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