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Questions and Answers
What is the minimum pitch requirement for modular panels?
What is the minimum pitch requirement for modular panels?
- 3:12 (correct)
- 5:12
- 7:12
- 1:12
Which metal roofing material has the highest recycled content?
Which metal roofing material has the highest recycled content?
- Zinc
- Aluminum (correct)
- Steel
- Copper
What type of coating on metal roofs is considered higher quality?
What type of coating on metal roofs is considered higher quality?
- PVDF (correct)
- Epoxy
- Polyester
- Acrylic
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Study Notes
- Metal roofing is one of the fastest growing segments of the residential replacement products industry.
- In 2020, 21.5 million squares of residential re-roofing were done using metal.
- Metal roofing increased from 11 to 15 market share in the past five years.
- Property owners are frustrated by the performance of standard shingles and are looking for products with long-term value.
- Consumers increasingly want the best environmental choice for their homes.
- Metal roofing is appealing because of its sustainability, energy efficiency, and recycled content.
- Homeowners are looking for more resilient materials due to extreme weather patterns.
- Metal roofing can be installed over one layer of existing shingles, except for standing seam.
- It's important to check local code requirements and manufacturer recommendations.
- Insurance companies may require old shingles to be removed for re-roofing.
- Leaving old shingles on during metal roof installation reduces costs, liability, and landfill waste.
- Metal roofing is generally recognized as non-combustible but check local code requirements for fire classifications.
- Standing seam metal roofing consists of interlocking panels with concealed fasteners and generally requires a flat surface for installation.
- Snap lock and mechanically seamed are the two general types of standing seam metal roofing.
- Mechanically seamed standing seam can be used on roof pitches as low as .25 and 12.
- Modular panels are designed to look like shingle shakes, slate tile, etc. and are easier and less costly to ship than long vertical panels.
- Exposed fastener panels have a simple overlap side to side and are typically made of steel.
- Minimum pitch requirements vary by manufacturer and style of metal roofing.
- Some metal roofing products have the option of butyl sealant to enable lower pitch installation.
- Manufacturers are happy to help analyze jobs and figure out what will and will not work.
- Modular panels are easily shipped and installed on solid decking with a minimum pitch of 3:12.
- Metal roofing materials include steel, aluminum, copper, and zinc.
- Steel can be galvanized or galvalume, while aluminum is ultra-lightweight and doesn't rust.
- Copper is known for its characteristic verdigris green patina, while zinc is a silver-gray metal.
- Aluminum has the highest recycled content at 95%.
- Metal roofing products are performance tested for uplift resistance, durability, and fire safety.
- Metal thickness is not the only factor in determining performance.
- More heavily formed products generally use thinner metal.
- Coatings on metal roofs include polyester and pvdf.
- Polyester coatings are entry-level, while pvdf coatings are higher quality.
- PVDF coatings (Kynar 500 and Hylar 5000) are known for superior fade and chalk resistance.
- Stone-coated steel roofing provides an attractive look and benefits of metal roofing.
- Premium grade synthetic underlayment weighs about 38 pounds per 10 square roll.
- Ice and water shield or any underlayment should always have a smooth top surface.
- Ventilation is important for metal roofs to prevent condensation on the underside of the roof deck in the attic.
- Ridge vents, slant back turtle vents, square vents, and power vents are common ventilation products used on metal roofs.
- Strapping battens on the roof may not be helpful and can decrease wind resistance.
- Metal roofing is a low weight option and reduces the ultimate stress on a structure.
- Metal roofs can address all three types of heat transfer: radiation, conduction, and convection.
- Metal roofing is energy efficient and widely recognized for its benefits.
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