KingRib® Series Insulated Trapezoidal Roof Panel

The KingRib® series of insulated roof panel system offers a cost-effective alternative to field-assembled High Rib roof applications, with all the outstanding benefits of insulated panels – high R values, energy efficiency, and an unrivaled fire rating. KingRib®'s 3 or 5 rib profile allows for long span requirements and/or severe loading conditions.

  • Panel thickness ranges from 1.5” to 6”
  • Interior Mesa profile with standard stucco embossing provides an attractive interior appearance
  • Excellent foam-to-foam contact at joint for superior thermal performance
  • Insulated metal roof systems like the KingRib® result in reduced schedule delays and quicker ROI
  • Factory cutbacks at eaves and end laps are available 
  • Utilizes CFC-free foamed-in-place polyisocyanurate foam

Product Information

Technical Information
Performance Testing & Approvals
Seamer Rental
Profile Exterior: Mesa with Trapezoidal Ribs
Interior: Mesa
Embossing Exterior: Stucco or non-embossed
Interior: Stucco or non-embossed
Gauge Exterior: 26, 24, 22 ga
Interior: 26, 24, 22 ga
Width 40"
Thickness 1.5", 2.5", 4", 5", 6"
Length 8’ – 50’ (please contact your Kingspan Regional Sales Manager or Kingspan Technical Services for detailed limitations on specific lengths)
Orientation Roof and Wall
Post fabrication Cutbacks
R-value ≈ 7.2 per inch per ASTM C518 @ 75˚F Mean Temperature
≈ 8.2 per inch per ASTM C518 @ 40°F Mean Temperature
Test Procedure Results
Fire FM 4880 Class 1 Fire Rating of Insulated Wall or Wall and Roof/Ceiling Panels,
Interior Finish Materials or Coatings, and Exterior Wall Systems
ASTM E84 Flame spread: 25 or Less, Smoke developed: 450 or Less
Wind Uplift FM 4471 1-60 @ 5’-3" spans with minimum 16 gauge roof purlins
Strength ASTM E72 Chamber Method Panel load / span and deflection tables are available
Thermal Transmission ASTM C518
Thermal Performance at 75° Mean Temperature   Thermal Performance at 40° Mean Temperature
Thickness R-Value Thickness R-Value
1.5 11 1.5 12
2.5 18.0 2.5 20
4 29 4 33
5 36.0 5 41
6 43 6 49
Air Infiltration ASTM E1680 0.04 CFM/ft2 of Panel Area at 20 psf
Water Penetration ASTM E1646 No Water Penetration at 20.0 psf

At Kingspan, we understand the unique challenges that design and construction professionals face every day.  To do our part in meeting these demands, Kingspan products are offered with our team’s guidance and technical expertise, followed up after construction is completed with our product warranties:

  • 2 year standard material workmanship warranty
  • Up to 20 years standard finish warranty
Contact our sales or customer service departments for information regarding our optional warranty programs.

Construction Seamer Rental Planning

Rent A Roof Seamer

Please contact D.I. Roof Seamers directly for rental information.

D.I. Roof Seamers
8407 Stanley Avenue, Unit 8
Niagara Falls, ON L2G 0C8
1-888-343-0456 ext 401
Insulated Metal Roof Panel


Insulated Panel Systems Product Portfolio

Be Inspired Global Case Study Book

KingRib & KingSeam Series Colour Chart

KingRib Data Sheet

KingRib Roof & Wall MasterFormat CSI Specifications (PDF)

KingRib Roof & Wall MasterFormat CSI Specifications (DOC)

KingRib CAD Details (PDF)

KingRib CAD Details (DWG)

KingRib Roof Installation Guide

For the complete building envelope solution, consider these complementary products.

Support & Training

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