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Do I Need Closure Strips For Metal Roofing?

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do i need closure strips for metal roofing

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Are you feeling the pinch of potential water leaks, annoying pests, or disruptive noise coming from your metal roof? 

You’re not alone. Many homeowners find themselves asking the crucial question: Do I need closure strips for metal roofing

Yes, foam closure strips are strongly recommended when installing a metal roof. They enhance the overall efficacy of your roofing system, providing a durable seal against weather elements, reducing noise, and keeping out pests.

This guide provides in-depth insights into why these strips could be the missing puzzle piece in your roofing project.

Do I Need Closure Strips for Metal Roofing – Short Guide

Yes, foam closure strips aren’t just an add-on; they’re an upgrade to your entire metal roofing system. By installing these in strategic areas like ridge caps, eave flashing, and valleys, you’re essentially bulletproofing your roof against leaks, winds, and other annoyances. Think of them as the ultimate accessory that not only complements your roof but significantly boosts its performance and lifespan. So, if you’re looking to transform your ordinary metal roof into a resilient, efficient, and quieter structure, foam closure strips are the way to go.

Should You Use Closure Strips for Metal Roofing?

Experts in the field of roofing generally advocate for the use of foam closure strips when installing a metal roof. 

Unlike a simple filler, these specialized foam strips serve a greater purpose—they significantly enhance the overall performance of your roof. 

By creating a weather-tight seal, these closure strips keep away elements like rain and snow, as well as unwelcome pests and noise.

Choosing to forego foam closure strips may save you some money upfront, but you’re potentially compromising the longevity and effectiveness of your roof. 

The absence of these strips can result in vulnerabilities such as leaks and drafts, thereby affecting the structural integrity of the roof. 

So, when considering whether or not to include closure strips, it’s worth looking at the long-term benefits, which can far outweigh the initial cost.

Where You Can Install Closure Strips for Metal Roofing

Strategic placement of foam closure strips in key areas like ridge caps, eave flashing, and seams can significantly enhance your metal roof’s performance. This targeted installation acts as your first line of defense against water infiltration, pests, and noise.

Ridge Caps

Installing foam closure strips at the ridge caps can significantly improve the weather resistance of your metal roof. 

The ridge cap is the point where two sloping roof sections meet. As it’s the highest point of a roof, it’s highly susceptible to wind-driven rain or snow. 

Using closure strips here ensures that these elements find no easy way into your home, thereby safeguarding the interior.

Eave Flashing

Eave flashing is another critical area where foam closure strips can prove invaluable. 

The eaves are the edges of the roof that overhang the face of a wall and protrude beyond the side of a building. 

These strips can block any openings that could let water seep in, especially during heavy rains. 

Additionally, closure strips at eaves prevent birds and pests from infiltrating your roofing system, providing you with an extra layer of protection.

Joints and Seams

The joints and seams in your metal roofing are vulnerable points where two metal panels meet. 

Water and pests often find these spots to be the easiest ways to penetrate your home. Installing foam closure strips at these joints and seams can prevent such issues. 

Moreover, they can add a level of structural integrity to the roof, holding the panels more securely and reducing any chances of leakage.

Hip Sections

Hip sections are the external angles formed by the meeting of two sloping sides of a roof. 

Installing closure strips at these points can again offer significant weather resistance. Just like ridge caps, hip sections are prone to weather exposure. 

Closure strips here provide an additional seal against rain, wind, and snow, adding an extra layer of defense where it’s most needed.


Valleys are the internal angles formed by the meeting of two sloping sides. These are particularly vulnerable to water infiltration due to the natural flow of rainwater. 

Using foam closure strips in these sections can drastically reduce the chances of water leakage, ensuring that your home stays dry even during intense storms.

By strategically placing foam closure strips in these key areas of your metal roofing structure, you significantly ramp up its resistance to elements, noise, and pests.

This targeted installation makes your roof not only more robust but also extends its lifespan, making it a wise long-term investment.

When You Can Use Closure Strips for Metal Roofing

The ideal time to install closure strips is during the initial installation of your metal roof, ensuring seamless integration. 

However, they can also be added during roof replacement or even retrofitted to an existing roof to optimize its performance.

During Initial Installation

The most optimal time to install foam closure strips is during the initial installation of your metal roof. 

Doing this ensures that every component of the roof works in harmony from the get-go.

Installing them later as an afterthought can result in additional labor costs and possible incompatibility issues with your existing structure.

Roof Replacement or Retrofitting

If you’re replacing a deteriorating roof or have an existing one without closure strips, you can still add them. 

While the process may be a bit more cumbersome, the benefits—such as enhanced insulation, weather resistance, and durability—are too substantial to ignore. 

In short, it’s never too late to improve your metal roof’s performance by adding closure strips.

Benefits of Using Closure Strips for Metal Roofing

Foam closure strips offer a plethora of benefits, from enhanced weather resistance to effective noise reduction. They act as a multi-functional tool that not only fills gaps but also adds value to your home by improving the overall performance and longevity of your metal roof.

Enhanced Weather Resistance

Foam closure strips are essential for sealing off gaps that might otherwise allow rain, snow, or wind to seep into your home. These strips provide an extra layer of protection, potentially saving you from expensive water damage repairs. The importance of this benefit cannot be overstated, especially in areas prone to extreme weather conditions.

Thermal Insulation

One often overlooked advantage of foam closure strips is their insulation capability. These strips can act as an additional layer of insulation, keeping your home warmer in the winter and cooler in the summer. This not only makes your home more comfortable but can also lead to noticeable savings on your energy bills.

Effective Pest Control

No one wants uninvited guests in the form of pests or birds taking up residence in their roof. Closure strips effectively block off the small spaces where such creatures could enter. By adding this extra barrier, you’re essentially reinforcing your home’s first line of defense against unwanted intruders.

Noise Reduction

Anyone with a metal roof knows how noisy it can get during a rain or hailstorm. Foam closure strips can significantly reduce the drumming sound produced by raindrops hitting the metal, providing you with a quieter, more peaceful environment.

Aesthetic Appeal

While their primary functions are practical, foam closure strips also contribute to the aesthetic appeal of your roof. By filling in gaps and providing a more polished, finished look, these strips can make your roofing project look like a job done by true professionals.

Alternatives to Foam Closure Strips

While there are alternatives like silicone sealants and butyl tape, they often lack the comprehensive benefits that foam closure strips provide. These alternatives might offer some level of sealing, but they generally fall short in providing insulation, pest control, and other advantages.

Silicone Sealants

While silicone sealants are a popular choice for sealing gaps, they lack the structural benefits that foam closure strips offer. They may provide a temporary fix but could require re-application over time. Plus, they don’t offer the same level of insulation or pest control that foam closure strips can provide.

Butyl Tape

Butyl tape is another alternative that’s primarily used for sealing. While it can be effective in creating a water-resistant seal, it’s usually not as durable as foam closure strips. Additionally, butyl tape doesn’t offer a range of benefits, such as thermal insulation and noise reduction.

Roofing Cement

Roofing cement is an adhesive that can provide some level of sealing, but it’s generally not recommended for metal roofing applications. It tends to be less durable and may crack over time, requiring frequent upkeep. Just like the other alternatives, roofing cement falls short of providing the multifaceted benefits that foam closure strips offer.


Installing a metal roof is more than just a home improvement task; it’s a long-term investment in your home’s safety, comfort, and efficiency. 

As we’ve delved into the critical question of Do I need closure strips for metal roofing?, it’s clear that these foam strips offer numerous advantages—from sealing your home against harsh weather to providing effective thermal insulation. 

With options to install them during initial construction or even as a retrofit, it’s never too late to optimize your metal roof. Make the informed choice and give your roof the upgrade it deserves.


What specific benefits do foam closure strips offer for metal roofing?

Foam closure strips provide multiple advantages, including weather-tight seals that block rain, wind, and snow, thermal insulation for energy savings, and noise reduction during storms. They also act as a barrier against pests and birds, elevating your roof’s overall performance.

Can foam closure strips be added to an existing metal roof?

Yes, foam closure strips can be retrofitted to existing metal roofs to improve their performance. The strips offer enhanced weather resistance, better thermal insulation, and noise reduction, even if added after the initial installation.

Are there alternatives to foam closure strips that can be used for metal roofing?

While alternatives like silicone sealants, butyl tape, and roofing cement can offer some level of sealing, they generally lack the comprehensive benefits of foam closure strips, such as thermal insulation and noise dampening.

How do foam closure strips contribute to the longevity of a metal roof?

Foam closure strips add to your metal roof’s lifespan by providing an additional layer of protection against environmental factors like rain, wind, and snow. They also reduce the risk of leaks and other structural damage, leading to less frequent need for repairs.

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