JM AP™ foil faced polyiso foam sheathing boards are available in R-values up to R-28 and offer a reflective foil facer on one side and a non-reflective facer on the other. AP Foil provides exceptional heat, moisture and air control and, when installed correctly, eliminates all major thermal bridges that cause heat loss. The rigid board sheathing has a one inch layer of continuous insulation for maximum wall and worksite efficiency.
JM AP™ Insulation Board, 3 in Thickness, 4 ft Width, 8 ft Length, Foil Facing, R-Value: R19, 6 Btu-in/hr-sq-ft-deg F Thermal Conductivity, -100 to 250 deg F, >=16 psi Compressive Strength, Polyisocyanurate Foam, Additional Information: Resists Water
| Additional Information | : | Resists Water |
| Compressive Strength | : | >=16 psi |
| Facing Type | : | Foil |
| Length | : | 8 ft |
| Material | : | Polyisocyanurate Foam |
| R-Value | : | R19 |
| Temperature Rating | : | -100 to 250 deg F |
| Thermal Conductivity | : | 6 Btu-in/hr-sq-ft-deg F |
| Thickness | : | 3 in |
| Width | : | 4 ft |
- Thermal Insulation - inch for inch, polyiso has one of the highest energy efficiencies
- Water-resistive barrier - when properly installed as part of a Johns Manville wall system, AP foil faced polyiso continuous insulation meets the ICC-ES AC71 acceptance criteria for foam plastic sheathing used as a water-resistive barrier
- Vapor barrier - at a minimum thickness of one inch, AP foil faced polyiso continuous insulation has a vapor permeance of 0.05 perms and qualifies as a Class I vapor retarder
- Air Barrier - when properly installed as part of a Johns Manville wall system, AP foil faced polyiso continuous insulation meets the Air Barrier Association of America boardstock criteria for materials and assemblies
- Non-corrosive - does not accelerate corrosion of pipes, wiring or metal studs
- Lightweight - easy-to-handle, can be cut with a utility knife or saw
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