So youve purchased your first portable rollformer and are ready to use it for metal roofing projects. How do you order metal coil for your portable roof panel machine? What information do you need to know about your machine, working with coil suppliers, and your project to order the right amount and type of metal coil?
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At New Tech Machinery (NTM), we work and partner with various reputable coil suppliers, like Sheffield Metals International. We know how important it is to order the right coil so that it works properly with your NTM machine and find reputable and quality coil suppliers to do business with.
In this article, well help you understand:
Before you begin the process of ordering metal coil for your portable rollformer, its critical that you understand some of the specifications of your machine that will help you figure out how much coil your machine can hold, the types and gauges of material you can use to make a quality finished roof panel, and how material gets used up when forming a profile so you can order the right coil width.
First, lets talk about the material recommendations and how material gets used during the rollforming process to make a specific profile. This information will vary depending on your machine and whether you use an overhead reel rack or a free-standing decoiler.
What materials and gauges can you use with your NTM portable rollforming machine? While specific gauges and thicknesses vary across portable roof panel machines and manufacturers, New Tech Machinery roof panel machines have been tested for the following materials with limited adjustments (thicknesses vary by machine):
For each portable roof panel machine, there are certain maximum coil widths youre able to use. From these measurements, your machine will have a specified finished panel width depending on your profile.
Material gets used up when the male and female legs of the panel profile are formed. Most panels will use between 4 to 6 of material to make a specific profile, so knowing how wide your limitations are is helpful when ordering coil and if youre adhering to an engineered system. Look at the material usage and maximum coverage width for the profiles you want to produce to understand how much coil youll need.
The specified coil widths and finished panel widths (depending on the panel profile) of New Tech Machinerys portable roof panel machines are:
Using coil widths or materials outside of whats specified for each machine increases your risk of damaging the forming rollers or drive rollers, oil canning on the finished panels, or crashing the panel into the exit end of the machine from lack of clearance. It can also void your warranty if the machine is damaged due to the use of non-specified material types and widths.
Check your NTM machine manual for the specific material types and thickness recommended for your machine.
When ordering the right amount and sizes of metal coil for your portable roof panel machine, understanding your machines dimensions plays a big role. Knowing the weight and capacity of your machines accessories can help ensure youre ordering the right coil initially.
Depending on your machines weight and dimensions with a trailer, it may not hold all sizes of coil. Understanding the machines weight on a trailer, overhead reel rack capacity, and maximum coil diameters of each machine is critical when ordering coil from a supplier.
The trailer manufactured and offered by New Tech Machinery has a 12,000 lb. capacity, and each machines weights on a trailer are as follows (including overhead reel rack and two expandable reels):
The dual overhead reel racks (weighing 336 lbs. except on the SSR, which weighs 316 lbs.) on all roof panel machines can support up to two 3,000 lb. coils, for a combined weight of 6,000 lbs when loading both expandable arbors with a coil. The SSQ II machine with optional notching can only support up to two 2,700 lb. coils because of the added weight of the notching units.
The maximum coil diameter, or outside coil diameter, measures how thick the rolled coil is. If the coil you use doesnt fit these dimensions, it will be too big to fit the overhead reel rack or free standing decoiler. The maximum coil diameter is 32 with the overhead reel rack and 45 with the free standing decoiler.
When researching and talking to various metal coil suppliers about their products, finding the best ones to do business with, and knowing the ordering process, there are a few things to keep in mind.
Before talking to a metal coil supplier, understand the following about your project and portable rollforming equipment:
Project Considerations
Equipment Considerations
When determining the amount of coil youd need for the job, youll need to know the profile youre producing, how much material gets used up when forming that profile, the actual panel width the machine will make based on the profile, coil width needed for your project, roof coverage in square feet, and waste factor percentage (based on your crews experience level and the jobs complexity).
Talk to your coil supplier to determine exactly how much material you need to order based on your machine and project specifications. You can refer to manufacturer or coil suppliers profile cut sheets for help understanding coil widths, panel widths, and material usage or see if they have a coil estimation calculator.
When you find a reputable coil supplier to order material from, what should you consider when ordering a coil for your portable rollforming machine?
While the process of ordering coil from different suppliers will vary, understanding your portable rollformers capabilities and the information you should have when talking to coil suppliers about ordering material is vital.
When talking to suppliers and figuring out how much material to order, remember:
Here at New Tech Machinery, we strive to help ensure our clients know exactly what kinds of metal materials and thicknesses their portable rollforming machines can handle properly. We also partner with and recommend some of the best coil suppliers to help you get the best coil for your NTM machine.
For references to some trusted partners and coil suppliers, or for more help understanding your machines coil requirements, feel free to reach out to one of our Account Managers!
Steel is one of the most utilized materials in design and construction, owing to its durability, formability, and sustainability. Among its varied applications, pre-painted metal, also known as coil-coated or pre-coated metal, emerges as a staple choice for exterior finishes in residential, commercial, institutional, and industrial buildings. Used extensively for exterior wall cladding, metal roofing, trim, and accessories, pre-painted metal offers not only high quality but also aesthetic appeal. Its success hinges on three key factors:
These advancements have significantly propelled the growth of the metal building industry, empowering builders with limitless possibilities to actualize architectural visions.
As the popularity of pre-painted metal expands, builders often face the choice between pre-painted metal and pre-coated metals. While these options share similarities, a distinct difference lies in their purpose: paint primarily serves aesthetic ends, while coatings are engineered for performance.
Paint, enhancing the visual allure of metal, can be applied via various methods to a range of surfaces. However, its protective properties are secondary, leaving the substrate vulnerable to environmental factors. In contrast, coatings are meticulously formulated to safeguard the substrate against extreme weather conditions while preserving aesthetic appeal. When referring to pre-painted metal, it encompasses both coating and painting processes.
The evolution of coating and paint formulations bolsters protection and broadens design options, spanning an array of colors and textures. Coatings, when factory-applied, offer superior consistency, durability, and eco-friendliness compared to alternatives. Other advantages include enhanced mechanical strength, corrosion resistance, and a robust substrate supporting advanced paint applications.
In this course, we delve deeper into the multifaceted traits of pre-painted coiled metal, exploring its creation, design, and performance aspects. Moreover, we shed light on its sustainable characteristics and offer insights into selecting metal building components.
PRE-PAINTED METAL OVERVIEW
Metals, produced in mills, serve as raw materials for a myriad of products. While structural steel members undergo forging processes to attain desired shapes for buildings and structures, mills yield metal coils through heating and rolling. The thickness of the metal, or gauge, determines the profiles rolled from the coil, making it adaptable for various applications. Post-forming processes, particularly cold-forming, shape coiled sheet steel into metal components like studs, girts, purlins, wall panels, roof panels, trim, and accessories. Cold-formed bending augments structural strength by introducing corrugations, enhancing stiffness.
Material Options
Steel and aluminum are two primary substrate choices for pre-painted metal in buildings. Steel, valued for its economic efficiency and engineered performance, boasts yield strengths ranging from 40,000 to 80,000 psi. Conversely, aluminum, lighter in weight with lower yield strengths of 18,00030,000 psi, offers ease of formability. Both metals integrate high recycled content and ensure full recyclability at the end of their service lives. The pivotal distinction lies in their corrosion resistance, with steel requiring protective coatings against rust and aluminum forming a natural oxide layer for inherent corrosion resistance.
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Coating Process
Although hot-dipped steel or aluminum can be installed without coating, it is customary, especially for exterior applications, to apply a protective coating. Pre-painting in a controlled factory setting is the most cost-effective, durable, and reliable method, akin to automobile paint application. This pre-applied coating shields the metal from weather elements and ensures design consistency across the building, facilitating flexibility in finish options.
The coating process commences at a coil-coating facility, where coils of steel or aluminum undergo unrolling, cleaning, chemical conversion coating, priming, and top-coating. Speeds of up to 700 feet per minute are achieved, resulting in high output with unparalleled precision and environmental friendliness compared to alternative painting methods.
Cost Factors of Pre-Painted Metal
Despite common misperceptions regarding its affordability, pre-painted metal offers great economic value over the long term. Analyses affirm its extended lifespan, minimal maintenance requirements, and positive impact on building appearance, thus enhancing the overall return on investment. Manufacturers of metal buildings typically provide complete building packages, including framing and cladding, further optimizing project ROI.
Design Aspects of Pre-Painted Metal
Pre-painted metals aesthetic versatility is exemplified in new or renovated buildings requiring architectural metal walls and roof panels. From a diverse palette of colors to special effects, such as mica/metallic shimmer and varied gloss levels, pre-painted metal offers boundless design possibilities. Whether stamped-in or embossed, texture adds depth and visual interest, contributing to a buildings overall aesthetic appeal.
Pre-painted metal walls and roof panels serve as significant design elements across diverse building types, offering refined exteriors and opportunities for differentiation and branding. This design flexibility extends to retrofitting existing buildings, offering a cost-effective means to revitalize aesthetics, improve durability, and enhance energy performance and sustainability.
PERFORMANCE CHARACTERISTICS OF PRE-PAINTED METAL
You may ask yourself, What contributes to the excellent performance of pre-painted metal? Beyond the core of treated metal, the performance of pre-painted metal comes down to enhancements and formulations of the coating. Just as custom finishes and coloring are perfectly combined to create the desired outcome, it is possible to customize coating formulation to create heightened characteristics.
The National Coil Coating Association (NCCA), an established trade organization dedicated to the growth of coil-coated products, has developed a series of technical manuals referred to as Toolkits (www.coilcoating.org/toolkits) that discuss metal panel performance. Specifically, Toolkit #26 focuses on the long-term performance of metal building panels and buildings. It notes three principal factors influence that performance: 1) the choice of materials, 2) the environment in which the products are placed, and 3) the variability of coating processes. By following the guidance contained in these documents, manufacturers can achieve consistent, high-quality results, and specifiers can identify acceptable tolerances and performance parameters.
Overall, virtually every geographic location and project type can benefit from pre-painted metal performance. In the western United States, lightweight metal roofing and wall panels reduce seismic mass and offer non-combustible, high-temperature resistance in the case of wildfires. In the storm-prone southern United States, pre-painted metal products are highly resistant to uplift from hurricane winds. In regions with high humidity, like the eastern United States, mold does not grow on metal. The substrate metal and coating process determine how resistant the metal material is to rust or decay. In the Midwest, where hail is often a concern, resistance to hailstorms can be factored into the strength of the metal as well as the durability of the coating. In short, regardless of the conditions or locations, pre-painted metal has been successfully used to create the most optimal solution.
GREEN BUILDING CONTRIBUTIONS OF PRE-PAINTED METAL
Pre-painted metal manufacturers have contributed significantly to developing products that support the green and sustainable nature of buildings. In fact, many manufacturers have helped architects and designers achieve certification under the LEED program, ENERGY STAR programs, and the Living Building Challenge, among others. Some of the ways in which they have been able to do this include the following:
In general, there are multiple ways that pre-painted metal products currently contribute to green and sustainable buildings. New and innovative initiatives are also being developed every day. One intriguing technology is the use of coil coatings that can react with pollutants in the air surrounding it. The chemical reaction creates a harmless transformation into water vapor, inert gas, and dust, which can be washed off the surface and remain clean. We are sure that more innovative solutions will be introduced in the realm of sustainability.
When specifying pre-painted metal products, there are numerous choices and options from which to select. Coordination with manufacturers during the design phases of a project will help gain insight into project-specific details, cost drivers, installation nuances, and all the latest options. In a standard CSI or MasterFormat, the typical locations for specifying coil products are Division 5: Metals and Division 7: Thermal and Moisture Protection. The subsections are 05 05 10 (Factory-Applied Metal Coatings) and 07 40 00 (Metal Roofing and Siding). Alternatively, the products could be part of a complete Metal Building System specified in Special Construction Section 13 34 19. In this case, MBMA publishes a Metal Building Systems Manual with a Performance Guide Specification. This guide specification is a free download at www.mbma.com and an excellent resource for specifying all metal building products. Some relevant items to address in a standard three-part specification format are highlighted below.
Part 1: General
The scope of specification work can include all preparation work, substrate review, product choices, and final installation. In terms of specifying performance, the appropriate testing standards should be referenced. (See sidebar.)
TESTING STANDARDS AND SPECIFICATIONS
Metal building products and coatings are designed to meet the applicable building codes (i.e., IBC) and energy codes (i.e., IECC, ASHRAE 90.1.), including all code-specific requirements for exterior walls and roofing. This includes requirements for fire ratings, wind, and weather resistance. Regarding the paint systems and coatings, standards are referenced for compliance and performance. Certifications are available from UL based on various ASTM standards for coating performance. There are also guidelines from the Fenestration and Glazing Industry Alliance (FGIA), a merger between the American Architectural Manufacturing Association (AAMA) and the Insulating Glass Manufacturers Alliance (IGMA), effective January 1, , including AAMA 621: Voluntary Specifications for High-Performance Organic Coatings on Coil Coated Architectural Hot-Dipped Galvanized (HDG) and Zinc-Aluminum Coated Steel Substrates.
Pre-painted metal product submissions should include the manufacturers data and information for all specified products, including color/finish samples. This information will be used to confirm that the appearance is acceptable and meets the aesthetic and performance requirements of the project.
Quality assurance is a significant part of any field-installed system. Installers are required to meet the qualifications set by the manufacturer of the metal products. Approved installers should provide the required documentation to the appropriate project chain of command as outlined in the specifications. Field professionals should also meet or exceed the minimum qualification requirements to ensure the installation is performed successfully.
On-site protection of products should be carried out according to the manufacturers instructions and recommendations. Similarly, the manufacturers standard limited warranty for wear, defect, bond, and conductivity can be requested and sought for the entire installation.
Part 2: Products
All pre-painted metal products specified should be defined in the record documentation, including the component type, substrate, thickness/gauge, coating type, formulation, and color. If multiple products are used, they should each be identified by type in the specifications. Additionally, the locations of each building component need to be called out in either the drawings or specifications. The details of the specified products can include:
The base metal of the products needs to be called out (steel or aluminum), including the type of pre-treatment (galvanized, galvalume, etc.).
Each metal product or panels thickness (gauge) needs to be identified.
All wall and roof panel types need to be identified and specified fully.
The type of coating based on resin type (PVDF, SMP, or polyester) needs to be identified for each product.
The formulation requirements or specific formulation preferences for the coatings need to be identified (i.e., primers, color coats, mica/metallics, performance additives, gloss/sheen, etc.)
All colors, textures, and other finish characteristics need to be identified for each product. The manufacturers literature should always be referenced.
In addition, all trim, accessories, and related items need to be identified in the specifications, ideally as part of a complete, coordinated system.
Part 3: Execution
As with any site-installed product, the installation requires multiple steps to be clearly articulated in the specification to achieve the best results.
When specified and installed correctly, pre-painted coiled metal will provide the desired look and long-term performance characteristics that are intended.
There are many design and performance considerations when selecting products for the exterior of buildings. Pre-painted metal products, including metal roofing and wall panels, are a popular and sustainable choice worth considering. Metal roof and wall panels are applicable for a full range of building types and are suitable for new construction and renovation projects. Suppose you need a versatile, durable, sustainable solution for your building. In that case, pre-painted metal products are a viable option that is easy to maintain and has a proven track record of longevity.
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