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How To Apply Metal Roofing

Common Metal Roofing Trims

How to Apply Metal Roof Coatings | GAF Roof Mate

Eave Trim

Eave trimis the first piece of trim thats installed on a metal roof. Its used when gutters are not required and finishes off the low sides of your home. It also directs water away from the side of your home.

Watch an eave trim installation here:

Gable Trim

Gable trimis used where the edge of the metal roof panel meets the endwall panels. Put simply, its used on the opposite two sides as the eave trim. Protection of this area is crucial. Without it, heavy winds can blow rain into these areas that can accumulate under the roof and into your home.

Watch a gable trim installation here:

Ridge Cap

A ridge capis used where two metal panels meet at the top of a roof along its ridgeline. Having good quality ridge caps is essential. Ridge caps receive excessive exposure to the elements and can wear down faster than the rest of the roofing. Aside from preventing moisture infiltration, ridge caps provide an attractive finish to where your roof comes together at the apex.

Watch a ridge cap installation here:

Installation Using Hidden Fasteners

Now that we have put the one-inch clip on the metal panel and cut the ribs back flush, we can install the panel by clipping it into the offset cleat. Slide the edge up through the offset cleat so that it is fulling engaged and flush along the edge.

Make sure that the panel is sitting back from the edge of the roof by half an inch. If we were to put the cleat flush with the edge of the roof, any jogging will be visible from the ground.

Now that the panels been installed, put a fastener through the nailing flange using a pancake head screw. If you see that the edge of the roof is sticking up a bit, use a block of wood with a towel on it and a rubber mallet to push it down so that its nice and flat to the roof-bed.

Visit more at ABC Metal Roofing.

Bad Detail #: Using A C/z

In this detail, the top of the panel is slid into a receiver at the ridge cap. Most of the time, the top of the panel is not fastened off, which could allow the panel to slide down the roof. Also, you are counting on sealant as the primary defense against water intrusion, which is never recommended.

Recommended Reading: Skylights In Metal Roofing

Roof Replacement Or Repair

Should you repair your roof or just replace it? if your roof is relatively new and the repairs required are simple, then by all means opt for a repair. However, if your roof is more than 2 decades old and requires major repairs that will cost you a substantial amount of money, a full replacement may be necessary. Consult a roofing expert for an evaluation so you can decide which course of action to take.

How To Install Endwall Flashing For A Metal Roof Step By Step Guide


When planning your metal roofing project, if you have metal roofing panels that are running up into a wall, youre going to need to install endwall to help control where water flows to protect your structure. Before we begin here is a list of the steps that need to be taken.

  • Install sidewall trim prior to the installation of the endwall flashing
  • Cut and finish the endwall flashing at the sidewall trim
  • Foam closure installation
  • Fasten the endwall flashing

At Western States Metal Roofing, our goal is to make the installation of your metal roofing panels easy and stress-free. This installation article will help guide you step by step through installing your endwall trim. To help you visualize this process, please check out our endwall flashing installation detail and the endwall trim installation video to help you even further.

Below, we will walk you through each step of how to install your endwall flashing for your metal roofing project.

To begin, please note that if your roof has a sidewall condition, all sidewall trim must be installed prior to fastening the endwall.

Also Check: How Often Should A Roof Be Replaced

Why Should I Install A Metal Roof

Although shingles and most other types of roofing materials maybe a little less expensive, they require more maintenance, and theres always a need to repair or replace some portion. Its also quite unfortunate that shingles cannot be recycled. Most shingles usually end up in landfills and waste disposal companies that charge nearly exorbitant fees before accepting them.

But with metal roofing, you need not worry about its disposal as it is 100% recyclable. You will indeed have to pay more to get these materials than with shingles. It, however, pays off in the long run. Metal roofing comes with lesser maintenance and repair needs, and it can last for up to 50 years.

Metal roofing adds more appeal to the entire structure, thanks to its numerous styles and colors. Aside from its aesthetic appeal and longevity, corrugated metal roofs are highly energy-efficient. Most metal roofing sheets are treated with a special paint that helps it reflect a huge amount of UV rays, helping to maintain a reasonable temperature within your home during hot days and saving good bucks on utility bills.

Installation Of Metal Roofing Over Shingles

If you choose to install metal roofing over shingles, there are certain things you must keep in mind. Were going to break them down, so you know what to look out for. But first, here are a few precautions about the underlying material:

  • Address any existing roof leaks and replace rotten rafters or sheeting.
  • Look out for any signs of the previous roof weighing too much. Signs may include buckling tresses or sagging decking.

Also, make sure you acknowledge:

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Drive Screws Just Right

  • Fastening the panels just right is the key to a watertight roof. Here is what you should know:
  • At the eave, place screws on both sides of every rib and lined up to go through the foam closure strip.
  • Each row should be spaced no more than 24 inches with one screw at each rib on the overlapping side.
  • Start at the bottom, fastening across the panel in rows, working toward the ridge.
  • Drive screws to seat flat on the roof a crooked screw wont seal.
  • Dont over-tighten or under-tighten. Tighten just enough to compress the rubber gasket to the edge of the screw head, not past it.
  • Clean up any metal shavings or burrs right away. They will rust.

A Note On Panel Storage

How to Install Standing Seam Metal Roofing

As far as possible, plan to install the panels ordered for, soon after they are delivered. Storing them for long may nihil the texture of the roof. If you have no option but to store them, do so, by raising the panel off the floor and resting one end of the panel on a structure that can provide support. Avoid plastic to canopy the metal sheets use tarps, instead. It would only disembody its property of ventilation, degrading the core quality of the panels by absorbing excess heat and moisture. Inconsiderate weather conditions, too, may derail their overall integrity instead, store them indoors.

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Types Of Metal Roofing

Before we get into the steps on how to install metal roofing its important to understand what types of metal roofs exist. While metal roofing can be made from a variety of metals, tin, zinc, steel, aluminum and copper are the most widely used and most commonly available options. Each metal has its own advantages and disadvantages, as well as cost considerations. Steel, for example, is the least expensive option while copper is the most expensive.

In addition to material choices, metal roofing is also available in three design styles: through-fastened panels , modular panels and standing-seam panels.

  • Through-fastened corrugated metal panels are the most common and readily available type of metal roof. They can be installed over roof sheathing or purlins.
  • Modular panels, which mimic other roofing materials like asphalt shingle and tile, are also available in a wide range of colors and styles. They, too, can be installed over solid sheathing or wood battens.
  • Standing-seam panels install over solid or skip sheathing and have the most complex installation process, so are typically best left to professional roofing installers.

How Many Fasteners Are Needed To Install A Metal Roof

A successful roof installation not only needs the right material, but the right amount of materials as well. Here are two easy formulas for determining the amount of metal roofing screws:

  • Take your square footage and multiply it by 80%
  • 80 screws for each roofing square. A roofing square is 100 square feet.
  • Example: 3,000 square feet X 80% = 2,400 screws

    Example: 30 roofing squares X 80 screws = 2,400 screws

    Read Also: Skylight Metal Roof

    Finish With Ridge Caps And Gutters

    Lastly, you can finish by installing the ridge caps and gutters. Ridge caps are metal or plastic panels that run along the roofs uppermost edge to protect it from water damage. At the same time, a gutter is a system for directing runoff rainwater away from your homes foundation. These will be the finishing touches and give your new roof nice clean lines and no exposed seams or edges.

    Metal roof installation can be tricky if you dont know what youre doing, but thankfully its not too difficult for homeowners who are willing to put a little time and effort into the project. However, due to the immense specifications of installing metal roofing, we always recommend you call the pros.

    Northface Construction offers comprehensive metal roofing installation, rehabilitation, and repair. Were your local experts that will provide your house the update you deserve while boosting curb appeal and the value of your home. Contact us today if you want to sit back, relax, and let us handle the tough stuff!


    Can Metal Roofing Be Installed Directly To Plywood

    Can You Install A Metal Roof Over Shingles

    Metal roofing should not be installed directly over the top of bareplywood. You do not have to install roofing shingles or other roofing material, but a felt sheet over the plywood is the bare minimum. You may also want to install a slip sheet to protect the felt sheet from potential damage caused by the metal roofing.

    If you install your metal roofing directly on plywood without the protective layers, you greatly increase the odds of the roof leaking. You also run the risk of premature wood rot, as the felt sheet provides a layer of moisture prevention that keeps the wood dry. Even without heavy rain, humidity can build up between the metal roofing and the plywood and ruin the wood.

    The slip sheet is also an important layer. This smooth, industrial paper is laid on top of the felt to protect the felt from the metal roofing material. The metal can heat up from exposure to the sun and adhere to the tar-infused felt sheeting. When the metal expands or contracts with changing temperatures, it can tear or wear away the felt sheeting.

    Recommended Reading: Skylight On Metal Roof

    Remove Or Begin Placing Metal Roof Over Existing Roof

    Most building codes only allow two layers of roofing, so if you plan on installing a metal roof on top of an existing roof, make sure to check the layers. Also, consult with a building inspector to be sure, as building codes can vary. If you plan on replacing your roof, start tearing it off. Check the weather before you start removing the roof. Youll need a day or two of clear weather to get the job done.

    Before You Begin Kindly Read This

    Disclaimer: Know that this article is meant, primarily for pedagogical purposes, aiding you to comprehend the process of roofing. It is recommended that the reader seeks professional assistance to carry out the roofing process. As with any DIY project of wide-reaching, wide-ranging nature, the foreignness of the sequential structure and equipment may overwhelm the DIYer. Know that these are no words of diasporic discouragement. Construe this note as one conduit to exercising caution.

    Note.- Adherence to laws and regulations stipulated for a DIY roofing project should be thoroughly analyzed. The Building Act of 2004 launched the Licensed Building Practitioners scheme, which summates certain projects as restricted building work. Abiding by the theoretical definition, there are a set of undertakings that must be dealt by licensed and competent authorities. These undertakings are structures fundamental to the design and architectural endurance of the building. One among these works is that of roofing and cladding. Keen DIYers who would want to ship into a roofing project must be licensed as an expert in the said field. If you cannot claim the post, the construction work should be supervised by a Licensed Building Practitioner. Besides, you may also apply for an Owner-Builder exemption on the grounds of you meeting their conditional criteria. Kindly check for other intricacies in the laws to avoid undue formal actions from authorities.

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    Thoroughly Measure Your Roof

    Before you purchase materials, make sure that your metal roofing will fit on your home. This is easiest to do if you measure out the space and take measurements before shopping for panels or shingles. But once you know what size of material to buy , be aware that not all metals come in standard sizes, so its good to have a little extra just in case.

    1) Measure the Height of Your Roof

    Measure your roof to determine how many panels are needed for installation. Some metal roofs come with pre-cut lengths, but if not, you will need some sort of measuring device like an accurate yardstick, measuring tape, a chalk and line system, or laser leveler. For the best results, make sure to use a ladder so you can get accurate measurements.

    2) Measure the Length of Your Roof

    Once you know how many panels are needed for installation, measure the length of your roof and order that amount in panels or shingles. Start at one end and take a reading from top to bottom with your measuring tape to measure correctly. At that point, measure the distance to the opposite end and add those two measurements together for your total length.

    3) Measure the Pitch of Your Roof

    Another critical number youll want to know is pitch this refers to how steeply sloped your roof is, or in other words, its incline measured from a horizontal plane. The pitch you want will depend on the type of metal roofing you buy because a steeper pitch means more material is needed for installation.

    Contact Legacy Service To Schedule An Appointment

    How to install Metal Roofing 3ft panels-ASC Building Products

    At Legacy Service, we love just about everything about this type of roofing. When they are installed correctly using the right materials, they can withstand just about anything. And since it reflects heat from the sun, it can help you save significantly on energy costs. Its also 100% recyclable, making it eco-friendly. We have decades of experience when it comes to installing this type of roofing, and we can actually custom-make every panel for your project. We also offer a lifetime warranty, which makes for a sound investment. If youd like to learn more about metal roof replacement, contact our Legacy Service team today to schedule an appointment.

    Posted on Oct 19, 2019 in Roof

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    A lot of elements play a role in maintaining the integrity of the roof, but as a homeowner, the most important components to pay attention to are the underlayment, ventilation, and material.

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    How Different Factors Affect Price:

    Substrate: The pricing on metals used to form the roofing panel are affected by supply and demand for raw materials and associated processing costs. Galvanized Steel and Aluminum are the most common metals used for residential roofing because they provide the best performance for the money. Although exotic metals like copper, zinc and stainless steel perform exceptionally well, they are less common roofing options because the cost is prohibitive for most people.

    Panel Design: The 2 major design options that affect price are overlapping vs interlocking panels. Interlocking panels will cost more than overlapping panels because they have more structural detail, go through a more extensive forming process and take up more room on a truck to ship. Panels designed to interlock on four sides will also tend to have a better quality finish which also adds to the cost.

    Finish: Also referred to as coating, is an important factor to consider as it can drastically change the cosmetic lifespan of a metal roof. Polyester based paints are the cheapest form of coating with the shortest lifespan while PVDF formula coatings are accepted as the industry gold standard due to their exceptional lifespan, adhesion, chalk and fade resistance.

    Underlayment: Often overlooked, the underlayment of a metal roof is a crucial second line of defense against the elements. If the roof is a new build it will require an ice and water shield which costs up to 5 times more than a breathable synthetic membrane .

    Risk Of Losing Your Roof Warranty

    Roofing manufacturers do not guarantee expert roofers have not installed materials. This is because a botched installation may misuse the roofing materials and ultimately result in costly damage. Further, doing your roofing is a gamble and will not guarantee your peace of mind due to the lack of warranty in case of any eventuality. Moreover, it will cost you more by paying for future repairs and maintenance costs of your roof as the roofing manufacturers warranty does not cover such costs.

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    Seal The Leaking Metal Roof:

    Undoubtedly, metal roofs are durable and long-lasting only if you have installed them correctly. Excitingly! You dont need to maintain this material regularly because of its incredible infrastructure and properties. For sure, you can give your home a stylish and magical appearance with a metal roof. The best thing is that you can choose this roofing material in any shape, size and texture of your choice.

    Even if this material is highly durable, it will damage over time without a proper sealant. The main reason behind the damages for this type of roofing is environmental changes. Metal sheets will contract in the winter season and expand in the summer.

    This contraction or expansion may create cracks in the sheets. For this, you have to fix the cracks immediately with the help of an appropriate sealant. You can seal the leaking roof yourself or also with the help of professionals. It all depends on the leakage condition and also your budget. In this way, you can save the metal roof from vulnerable damages in the future.

    Lets begin fixing the leakage or rusting issues with proper sealing of metal roofs:


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