How to Prepare for Metal Roof Panel Installation
- On February 22, 2022
Every year, more and more people are realizing the incredible benefits of a metal roofing system. With a lifespan of over 50 years, exceptional durability and reliability, energy efficiency, and low maintenance costs, a metal roof is the perfect solution for your residential or commercial property. That said, as with all projects, execution will determine if the metal roof panels live up to their high praises. Before beginning your metal roofing installation, take time to understand the various factors that determine the quality of installation.
Working with experienced metal roofing contractors means that you can have all questions regarding your metal roofing project answered. You can also have the peace of mind that your metal roofing project will be professionally executed and with a high level of care. Below are some tips to prepare for your metal roof installation and what you can expect from a typical project.
Preparing for the Installation of Metal Roof Panels
It is important to take certain preparation steps before your installation begins. These include:
Starting your metal roof panel installation with a clear plan of action that accounts for all variables sets you up for the best results. Key among the things you need to plan on is an appropriate time for the project based on your location. Some of the other considerations your installer will have to make include:
Wind conditions. It is best to install metal roof panels in low-wind conditions to lower the risk of injury or product damage.
Moisture levels. Metal roof panels should be installed when it’s dry outside. This means that there was no dew, ice, rain, or snow recently, as slick surfaces increase the chances of slipping and injury.
Once all the metal roof panels, trims, and other metal roofing supplies have been delivered to your location, the next step is to ensure that everything is present and in good condition. For this, the metal roofing contractors will need to:
- Check the metal roof panels for bending/denting, moisture, wind damage, or any transit abrasion
- Ensure the materials are properly stored, including bundling and stacking the metal roof panels and trim to protect them from damage.
Once everything is set, it is now the responsibility of the metal roofing contractors to:
- Ensure that all materials are present and in perfect condition
- Arrange the materials to prevent damage and improve safety around the site
- Ensure all tools required for metal roof panel installation are available and functioning, including ladders, drills, and scaffolding.
- Ensure safety preparations are in place and that all safety gear is available and in good condition, including eye protection, gloves, and safety boots,
When working on your roof, it is important that your contractors:
- Ensure everything is square and on a level plane and corrected if not.
- Ensure that the integrity of the substrate is not compromised.
Job Site Requirements for Installing Metal Roof Panels
Every job site is different. However, below are some key considerations that will ensure that your new metal roof installation project goes as smoothly and quickly as possible.
Identify a flat area for vehicle parking, material storage, and a dumpster if needed for your contractors. The installers may need clear access on all sides of the building to position and install panels and trim, depending on the nature of your project.
You will need to provide your metal roofing contractors with a reliable power supply for their cutting and fastening tools. Some contractors may provide a generator for their installers.
Safety should always be the highest priority for everyone involved in the project and around the site. Metal roof panels and trim have sharp edges, so only installers with proper safety gear should handle them.
Installing Metal Panels with Different Building Applications
In general, metal roof installations are the same for most end-use applications though some equipment may vary. However, there are certain caveats to keep in mind depending on the other products or materials in the mix.
Over Asphalt Shingles
Although installing metal roof panels over an existing asphalt shingle roof is possible, placing the metal panels directly over the asphalt shingles should only be done if a underlayment is placed in between the existing shingles and the new metal panel.
It’s best to either remove the asphalt shingles or create a buffer using a furring strip also known as strapping. A 1” by 4” piece of wood can provide clearance between the panels and the asphalt shingles. Strapping is not always needed with metal roofing. It depends on the gauge steel used in the panel, the profile of the panel and your preference. This does increase the cost of the install and is not always necessary. Your roofing specialist can assist you with this decision.
Over Treated Lumber
The proper separator material must be used. For example, a blue skin underlayment that is appropriate for “straight to deck” applications.
Other Considerations for Metal Roof Panel Installation
Depending on the nature, location, and scope of your project, you might also want to look at adding ice stoppers to protect against falling snow and ice if you live in higher than normal snow load areas.
Above everything else, you need to ensure that all local codes and requirements are fully met.
Things You Need to Prevent During Metal Roof Installation
Putting Rivets in Valleys
If your steel roof installation is done correctly, there will be no rivets in the valley. When you drill a hole for the rivet, you will poke holes in the underlayment, creating potential leaking spots. When you avoid putting rivets in your valleys, you will avoid potential leakage of your steel roof.
Exposed Fasteners That Go Through the Flat Portions of The Panels
If your metal roof panels have an exposed fastener, the potential of leaking increases significantly. The panel can also be pinned if they are clipped through to your decking. As a result, they will stop the panel’s thermal movement and create stress points.
Double Pinning the Panels
When you do not double pin your roof, the panels will expand and contract better, reducing the likelihood of fasteners backing out, oil canning, and more. At Ironclad, we pin at the top when we install metal roof panels, allowing expansion to occur at the eave.
Modified J or J-Channel
A J-channel refers to a kind of flashing material used in metal roofs. However, J-channels tend to trap dirt and water, which may hasten the corrosion of metals in some cases. In addition, J-channels may also limit the expansion and contraction of your roof systems.
Using a C/Z-Closure, Particularly in Snow Environments
For a C/Z-closure, the top of the panel usually slides into a receiver found at the ridge cap. Usually, the top of the panel is not fastened, allowing the panel to slide down the steel roof. This means that you are depending solely on sealant as your main defence against water intrusion, which is not recommended.
Any Roof Penetration That Is Not Correctly Flashed
Your installer will have information that lets them know how to correctly install flashing around penetration points. This may be different than the kits or additional recommended installation instructions that came with the item.
Large, Visible Gaps of Any Kind
Gaps can cause leaking in your steel roofing panels. Therefore, there should not be any gaps anywhere in the metal roof. If your panels have any gaps during metal roofing installation, they should be fixed immediately. Gaps will not only cause leaking but will also allow entry of unwanted guests such as rodents, insects, or other dangerous critters.
Leaving Exposed Edges Unhemmed5
Painted metal sheets and coils are roll-formed to build metal panels, trim, and flashing materials. That means that they need to be slit to the right size for the project. Exposed edges from cuts to the metal should be hemmed to prevent any issues which may affect the metal roof.
Contact Us for All Your Metal Roofing Needs
A metal roof is a smart investment. However, you also need to make sure that you choose the best roofing system and work with experienced metal roofing contractors. At Ironclad Roofing, our Tuscany metal roof panels are highly durable, lightweight, and dependable while also adding a touch of timeless elegance to your property. We know what it takes to provide and install a metal roof that can last a lifetime.