PAC-Shield Roof and Wall Insulation

PAC-Shield is the polyisocyanurate (polyiso) insulation line from Petersen under the PAC-CLAD name, made for roof and wall assemblies. The roof boards use a closed-cell polyisocyanurate foam core produced on-line and bonded to fiber-reinforced facers on both sides. They are made with NexGen Chemistry and contain no CFCs, HFCs or HCFCs, with zero ozone depletion potential.

The roof insulation range has four profiles:

• PAC-Shield. The standard board. R-values range from R 5.7 to R 26.8.
• PAC-Shield CV. A ventilated insulation panel for metal, slate and tile roofs.
• PAC-Shield Coated Glass. A roof insulation profile with coated glass facers.
• PAC-Shield Nail Base. A roof insulation profile with a nailable top facer.

• Thickness: 1 inch to 4.5 inches (25 mm to 114 mm).
• Board sizes: 4 ft x 4 ft (1220 mm x 1220 mm) and 4 ft x 8 ft (1220 mm x 2440 mm).
• Compressive strength: 20 psi or 25 psi.
• Grades meet ASTM C1289 Type II, Class 1: Grade 2 (20 psi) or Grade 3 (25 psi).
• Special cuts: straight cut, bevel cut and flute fill.

The board is approved for direct application to steel decks and for use under built-up, modified bitumen and single-ply roof coverings. A multilayer installation with staggered joints is the recommended arrangement for thermal performance.

The roof board R-values run from R 5.7 to R 26.8, and the thickness range is 1 to 4.5 inches. Published downloads for the roof line cover a facer guide, fastening pattern, packaging and weights, storage and handling, and a safety data sheet.

The standard board is used under standing seam metal roof systems, single-ply systems (ballasted, mechanically attached and fully adhered), modified bitumen systems and built-up roofing in asphalt and coal tar. It is intended for constructions that require FM Class 1 and UL Class A ratings. See flat roofing systems and insulation for the low-slope assemblies these boards are used in.

The wall range has seven profiles, all used as continuous insulation:

• PAC-Shield CI Ply
• PAC-Shield CI Ply (Class A)
• PAC-Shield CI Nail Base
• PAC-Shield CI Foil
• PAC-Shield CI Foil (Class A)
• PAC-Shield CI Coated Glass
• PAC-Shield CI Coated Glass (Class A)

The line contains no HFCs, CFCs or HCFCs and is made using recycled materials. It has virtually no global warming potential. It can contribute to LEED credits for Optimize Energy Performance, Building Life-Cycle Impact Reduction, Environmental Product Declaration, Material Reuse, Recycled Content, Construction and Demolition Waste Management and Thermal Comfort.