Mueller Trapezoidal Lock Panels should not be installed on a roof that is less than a 1/4:12 pitch. When this panel is installed on pitches less than 1/4:12, heavy rainfall may lead to water accumulation and possible leaks.
Important Messages from Mueller
Mueller Trapezoidal Lock (MTL) - Standing Seam
Mueller's Trapezoidal Lock is the ultimate in weather resistant roofing. With a 3" tall rib and 24" coverage, this is ideal for commercial buildingswith lower pitched roofs. MTL panel is available in 24 gauge Bright White or Galvalume Plus.
STANDING SEAM (MTL) BENEFITS:
- Up to a 35/40-Year Limited Paint Warranty
- A Wide Range of Designer Colors
- Hail Resistant - Underwriters Laboratories
- Class-4 Rating
- Fire Resistant
- Wind Resistant
- 24 Gauge - Commercial Grade Steel
- Energy Efficient
- Greater Life Expectancy
- Outstanding Durability
- Possible Insurance Savings
Note: MTL Panel can exhibit oil canning, which is a waviness in the flat area of roofing panels. This is an aesthetic issue and not a reason for rejection. For more information about oil canning, click here.
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Frequently Asked Questions
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What is the minimum roof slope recommended for MTL Panel?
What is the minimum roof slope recommended for MTL Panel?
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Do the panels come pre-cut?
Do the panels come pre-cut?
All panels are made at one of our manufacturing locations and pre-cut to the appropriate lengths for your roof. The cuts will be square across the panels – angle cuts for valleys or hips must be done in the field.
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Can you refer an Independent Contractor?
Can you refer an Independent Contractor?
Mueller Inc. can provide contact information for independent contractors who are knowledgeable in the installation of Mueller products. However, we require that you sign a “Referral of Independent Contractor” document that acknowledges certain limitations of the referral. Furthermore, Mueller Inc. in no way employs, represents, guarantees workmanship, or endorses any contractor.
* Colors may vary by monitor settings. Please contact us to get the most accurate color representation. We will be glad to provide you with color samples.
** Galvalume Plus has no uniformity of appearance guarantee. Each individual sheet, even upon delivery, may have a different color, gloss, sheen, texture or spangled appearance. If uniformity of appearance is desired, a painted product is required.
Click here for information about our paint warranties.