IKO Ener-Air™ Sheathing

IKO Ener-Air Wall Insulation is a rigid, polyisocyanurate foam insulation panel with high thermal properties. It is constructed from closed cell polyisocyanurate foam core bonded on each side to coated fiberglass facers during the manufacturing process. IKO Ener-Air is designed to be a non-structural sheathing in cavity wall, stud wall or cathedral ceiling construction. It is a dimensionally stable air barrier with a high water vapour permeance and excellent water shedding capabilities. The product is lightweight, easy to handle and can be sized with ease. IKO Ener-Air has a high thermal R-value of R6 per inch (RSI 1.05 per 25 mm), providing superior insulation protection, which helps to reduce energy costs and increase efficiency. IKO recommends taping the seams with IKO AquaBarrier VP Tapes.

Performance as a Sheathing

Ener-Air is a vapour-permeable, nonstructural rigid polyisocyanurate insulation sheathing board with high thermal resistance properties. Constructed from closed cell polyisocyanurate foam core which is bonded on each side to a coated glass fibre mat facer.

Polyiso has the highest R-value per inch

Polyiso has the highest R-value per inch of any rigid foam board insulation. Increased thermal resistance improves wall energy efficiency performance.

Effective strategy to reduce initial construction costs

The higher thermal values per inch of Ener-Air insulation sheathing means that it requires less space than other less efficient insulation to deliver the same level of performance.

Controls sound

Ener-Air reduces noise, adding quiet comfort to the building enclosure. Ener-Air has been tested to deliver world class STC qualities.

Non-emissive odour tested

 Ener-Air has passed testing for odour, assuring building occupants that industry standards are met.


Coated glass fiber facers on both sides of the sheathing provide moderate abuse-resistance on the job site. Ener-Air is lightweight & easy to cut, thus reducing labour costs on site. Stud and fastener line indicators improve accuracy of installation.

Provides versatility

Coated glass fibre facers provide the long term moisture resistance necessary for various wall applications. The facers are also compatible with most solvent-based materials.

uniform thickness

Has a uniform thickness for consistently maintaining air space requirements in wall applications.

Different Sizes

Available in 4 ft x 8 ft and 4 ft x 9 ft boards in 12 mm (0.5 in), 16 mm (0.625 in), 18 mm (0.75 in), 25 mm (1.0 in), 38 mm (1.5 in), and 50 mm (2.0 in) thicknesses. Other sizes are available upon request as a special order.


Can be pre-cut at our factory to the size you need with IKO AccuCutTM service.

Weather-Resistive Barrier

Ener-Air can work as a Weather-Resistive Barrier (WRB) for exterior walls. When detailed with IKO AquaBarrier VP Tapes, the Ener-Air system can be a code compliant, vapour-permeable WRB assembly thus providing three major design features – insulation, weather resistive air barrier and sound reduction all at once. This eliminates the need for a building wrap and an air barrier.

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