If you are considering a roof replacement, you are probably looking around for the most reputable company that can replace the roof at a cost that fits within your budget. You want to make sure they are experienced, understanding all different components of this kind of roof and the right recommendations–including the importance of closure strips for metal roofing.

Some people choose to skip certain things for the sake of saving money. However, neglecting to use foam closure strips for your metal roof could be a mistake. Metal roof closure strips play a crucial yet often overlooked role in ensuring the integrity and weatherproofing of your roofing system.

In this guide, we’ll delve into the world of closure strips for metal roofing, explain their purpose and installation process, and maintenance requirements. Whether you’re considering this type of roof for your home or already have it installed, understanding closure strips is key to protecting your investment and ensuring lasting performance.

A newly installed metal roof on a two-story white house to help illustrate closure strips for metal roofing.What Are Closure Strips for Metal Roofing?

Metal roof closure strips, also known as foam closure strips, are specialized components designed to seal the gaps between panels and prevent moisture, debris, and pests from entering the interior of the structure. These strips are typically made from durable materials such as foam or rubber and are custom-shaped to fit the profile of the metal roofing panels.

The strips are usually about an inch thick and 1-inch to 2-inches wide. Different types of closure strips are designed to fit your specific roof design and are incredibly durable and are moisture-resistant. Ensuring a snug fit, closure strips help reduce your chance of leaks from rain, snow, or sleet and keep out pests, birds, and rodents that could cause damage to your roof.

The strips also act as an insulator, helping reduce noise from wind or rain. They perform better and last longer than other materials, such as dense spray foam. This is true regardless of the type of roof, whether it’s a corrugated metal roof (made up of corrugated roofing panels) or another stylish and durable design.

Closure strips are a necessary part of a metal roofing system. They add an extra layer of protection and a tight seal that you want for your home. Once they are installed, you won’t need to do anything to keep them working properly aside from general maintenance. Simply check them during your routine roof maintenance to make sure they are on there properly and don’t need to be replaced.

How Are Metal Roof Closure Strips Installed?

Installing metal roof closure strips is a straightforward process, but requires attention to detail and proper technique. Here’s a basic overview of the installation steps:

Prepare the Roof: Ensure that the roofing panels are clean, dry, and free of debris before installing closure strips.

Measure and Cut: Measure the length of each roofing panel and cut the closure strips to fit snugly between the panels, ensuring complete coverage along the entire length of the roof.

Position the Strips: Place the closure strips along the edges and ridges of the metal roofing panels, ensuring a tight seal between adjacent panels and any penetrations such as vents or chimneys.

Secure in Place: Use adhesive or fasteners to secure the closure strips to the roofing panels, following manufacturer guidelines for proper installation methods and spacing.

Inspect and Seal: Once the closure strips are installed, carefully inspect the roof for any gaps or gaps that may compromise the seal. Use sealant or caulking to fill any gaps and ensure a watertight barrier.

Do Metal Roof Closure Strips Need Maintenance?

While metal roof closure strips are relatively low-maintenance components, regular inspection and upkeep are essential to ensure their continued effectiveness. Here are some maintenance tips to consider:

  • Periodic Inspection: Inspect the closure strips annually for signs of wear, damage, or deterioration, especially after severe weather events.
  • Cleanliness: Keep the roof surface clean and free of debris to prevent obstruction or damage to the closure strips.
  • Replace as Needed: If you notice any signs of damage or deterioration, such as cracking, crumbling, or loss of elasticity, replace the closure strips promptly to maintain the integrity of the roofing system.


What do metal roof closure strips do?
Metal roof closure strips seal gaps between metal roofing panels, preventing water, debris, and pests from entering the interior of the structure.

Are closure strips necessary for metal roofing?
Yes, closure strips are essential for maintaining the weather-tight seal of a metal roofing system and preventing leaks and damage.

Do metal roof closure strips need maintenance?
Yes, periodic inspection and upkeep of metal roof closure strips are necessary to ensure their continued effectiveness and prevent damage or deterioration.

Can I install closure strips myself?
Yes, closure strips can be installed by homeowners with basic DIY skills. However, professional installation may be recommended for complex roofing systems or challenging installation conditions.

How long do metal roof closure strips last?
The lifespan of metal roof closure strips can vary depending on factors such as material quality, environmental conditions, and maintenance practices. In general, quality closure strips can last for many years with proper care.

Metal roof closure strips are vital components of a well-designed and properly functioning metal roofing system. Are you considering a metal roof as a replacement for your existing roof? Our team at Mountaintop Metal Roofing can help! We will discuss all the details of your roof replacement and answer any questions you have. Contact us today to get the process started.