Get A Free Roof Inspection

How To Choose The Right Metal Roof Underlayment?

Written by

Leroy Whitt

When it comes to selecting the right roofing system for your home, you might spend a lot of time pondering over the perfect type of metal roof to suit your needs. But what often goes unnoticed is the unsung hero of your roofing system—the underlayment.

In this professional guide, we’re going to demystify the process of choosing the best metal roof underlayment, exploring its:

  • Importance
  • Types
  • Costs
  • Why hiring a professional roofing contractor is crucial for your home’s longevity and safety

What is Metal Roof Underlayment?

metal roof and underlayment

Before we dig deeper, let’s define what metal roof underlayment is. Simply put, underlayment is a protective layer that is installed beneath the metal roofing surface. Its primary function is to serve as a secondary barrier against weather elements, providing additional protection to the roof deck from:

  • Moisture
  • Wind
  • Other potentially damaging factors

Why is Underlayment Essential?

Metal roof underlayment acts as a moisture barrier, which is essential in preventing water infiltration during heavy rains or snow melts. It also protects the roof deck from damage, adds a layer of insulation, and helps in noise reduction. Additionally, quality underlayment can extend the lifespan of your metal roof by providing that extra shield against natural wear and tear.

How Metal Roof Underlayment Differs from Other Types

While all roofing underlayment serves the purpose of protecting the roof deck, metal roof underlayment is specifically engineered to work in harmony with metal roofing systems. Here’s how it differs:

  • Thermal Resistance: Metal roofs can get quite hot under the sun. Metal roof underlayment is designed to withstand high temperatures, reducing the risk of damage to the roofing materials and underlying structure.
  • Moisture Control: Unlike typical asphalt shingles, metal roofs don’t absorb water. However, they can trap moisture underneath if not properly ventilated. Metal roof underlayment often features moisture-wicking properties to prevent this issue.
  • Durability: Metal roof underlayment is generally more durable and robust compared to its counterparts used under shingles or tiles, mainly due to the longevity of metal roofs themselves.

4 Different Types of Metal Roof Underlayment

laying out underlayment

Choosing the right type of underlayment for your metal roof is crucial. Here’s a look at the common types available:

1. Felt Underlayment

Felt underlayment is the traditional choice and is available in two main types:

  • Saturated Felt: Made from organic materials saturated with asphalt, this is the more traditional choice but may not be the best for metal roofs due to its susceptibility to moisture damage.
  • Non-bitumen Synthetic Felt: This modern version offers more durability and resistance to water, making it better suited for metal roofing.

2. Synthetic Underlayment

Synthetic underlayment is made from polypropylene or polyethylene. It’s quickly becoming a popular choice for metal roofs due to its advanced features:

  • Water Resistance: Provides superior water resistance compared to felt.
  • Tear Resistance: Highly durable and resistant to tearing, even under extreme weather conditions.

3. Self-Adhered Membrane

This type of underlayment is usually a bit more expensive but offers excellent waterproofing and is particularly useful in areas prone to heavy rain and snow. It features an adhesive backing that sticks directly to the roof deck, ensuring a tight seal.

4. Foil-Faced Underlayment

Foil-faced underlayments are designed to reflect heat away from the building, making them ideal for homes in hot climates. They provide additional insulation and are often used in conjunction with other underlayment types.

How Much Does Metal Roof Underlayment Cost?

The cost of metal roof underlayment can vary depending on the type and quality you choose. Here’s a general breakdown:

  • Felt Underlayment: Typically costs $0.15 to $0.30 per square foot.
  • Synthetic Underlayment: Ranges from $0.20 to $0.50 per square foot.
  • Self-Adhered Membrane: Costs around $0.75 to $1.25 per square foot.
  • Foil-Faced Underlayment: Usually priced between $0.50 and $1.00 per square foot.

These prices can fluctuate based on the brand, quality, and geographical location. It’s important to factor in labor costs, as the installation of underlayment can be labor-intensive, especially for self-adhered membranes.

Why Hire a Professional Roofing Contractor?

While it may be tempting to take a DIY approach to save costs, installing a metal roof and its underlayment is a complex task best left to professionals. Here’s why:

🧠 Expertise and Experience

Professional roofing contractors have the training and experience needed to select and install the appropriate underlayment for your specific metal roof. They understand the nuances of different materials and can provide expert recommendations based on climate and roof design.

👍 Quality Assurance

A professional contractor will ensure that the underlayment is installed correctly, providing the maximum protection and longevity for your roof. This includes proper overlapping, sealing, and ventilation—details that are often overlooked in DIY projects.

🦺 Safety

Roofing projects pose significant safety risks, including falls and injuries. Professional contractors have the necessary safety gear and training to mitigate these risks, ensuring the job is completed safely and efficiently.

🛡️ Warranty Protection

Most manufacturers require professional installation of their products to maintain warranties. Hiring a professional contractor can protect your investment by ensuring that all warranty conditions are met.

Full Protection For Your Metal Roofing System

metal shingle roof

Metal roof underlayment plays a critical role in the performance and lifespan of your roofing system. Protect your roof decking with Whitt’s Quality Roofing’s underlayment for metal roofing.Reach out today to learn more about metal roofing underlayment and get the right roofing material for you!

Questions?
We've Got The Answers.

Questions?
We've Got The Answers.

From Our Blog

We'll go the extra mile for you!

Reach Out Today