RCC is polyurethane foam with closed-cell structure, used in production of insulating rigid spray foam. It is ideal for insulating food storehouses. Foam reaches the places which are most difficult to reach, completely covering the entire surface leaving no gaps.The foam manufactured by Exxon Panah Co. is suitable to use on steel constructions, sheets or concrete.
Closed-cell spray foam insulation systems, when properly installed, deliver energy savings of up to 45%
Small imperfections in the building envelope (holes, cracks, gaps) not properly sealed will eventually lead to poor building performance or worse, moisture accumulation, allergen/pathogen growth, and very possibly structural failure. The solid nature and sealing capability of closed-cell spray foam, inhibits moisture-driven elements. Two inches of closed-cell spray polyurethane foam insulation will minimize air infiltration, exfiltration, convection, conduction and control solar driven moisture in the building envelope.
Recommended Product Applications
• Vented Attics
• Unvented Attics
• Vented Crawl Spaces
• Unvented Crawl Spaces
• Concrete Slabs
• Cold Storage
Thermal conductivity coefficient λ
Indicates the amount of heat that, in one hour, crosses a surface of one square meter and one meter thick, when the temperature difference between the two faces is one degree.
According to international standards it is expressed in W/mK and is evaluated at the average test temperature of 10°C.
It is an inherent property of each material: the lower the value of λ, the better its insulating power will be.
In situ expanded polyurethanes offer low thermal conductivity values that vary according to different parameters; the most significant are the type of structure, with open or closed cells, the density, the formulation of the system.
Also the mechanical performances are strongly influenced by the density and, for the most common types of closed cell applied spray foams, the typical values of compressive strength vary between 160 and 500 KPa and are suitable to meet the most severe operating conditions of the insulating layer (see graph).
Durability over time
The chemical reaction that originates the polyurethane RCC foam is complete, irreversible and stable over time. The polyurethane foam applied in situ is a solid and compact material that does not deform, does not crumble, and maintains its physical and chemical characteristics over time.
The polyurethane foam is inert and not biodegradable, it resists well to biologist attacks
The infiltration of air in the interspaces of the perimeter walls and in the covering mantles determine, in the presence of discontinuous insulating layers, a reduction of the insulating performance of the structure. The continuous layer of polyurethane foam, with a content of closed cells ≥ 90%, applied by spraying ensures a perfect seal against the air preventing possible infiltrations at the junction points between the different structures.