As a subject matter expert in insulation materials, I have a deep understanding of the various types of insulation and their respective properties. When it comes to R-22 insulation, it is a high-performance insulation material with a high R-value, which is a measure of thermal resistance. The R-value is a critical factor in determining the effectiveness of insulation in reducing heat flow through a building's envelope.

In the context of insulation, the R-value is an indication of the material's ability to resist heat transfer. The higher the R-value, the better the insulation performs in preventing heat from passing through it. R-22 insulation is designed to provide a significant level of thermal resistance, which is why it is often used in areas where there are extreme temperature variations, such as in the attic or in the walls of a building.

Regarding the specific question of the thickness of R-22 insulation, it is essential to understand that the R-value does not directly correlate with the thickness of the insulation material. However, manufacturers often design insulation products to meet certain R-values at specific thicknesses to provide a standard for consumers and builders. The thickness of R-22 insulation can vary depending on the product and the manufacturer, but it is common to find insulation with an R-value of 22 to be around 5.5 inches or 140 millimeters thick.

The reference material provided indicates that there are two types of R-22 insulation, one with a coverage area of 4.6 square meters (49.0 square feet) and another with a coverage area of 7.0 square meters (75.1 square feet). Both are listed with a thickness of 140 millimeters or 5.5 inches. This uniform thickness across different coverage areas suggests that the material's density and composition are consistent, allowing it to achieve the same R-value regardless of the area it covers.

It is also worth noting that the R-value can be influenced by factors such as the installation quality, the presence of air gaps, and the overall thermal bridging in the building envelope. Therefore, even with high R-value insulation, it is crucial to ensure proper installation and maintenance to maximize its effectiveness.

In conclusion, the thickness of R-22 insulation is typically around 5.5 inches or 140 millimeters, but it is always best to refer to the manufacturer's specifications for the exact dimensions and installation guidelines to ensure optimal performance.

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EcoTouch PINK FIBERGLAS Insulation R-22R-ValueCoverageThicknessRSI: 3.87 R-224.6 m2 49.0 sq. ft.140.0 mm 5.5 in.RSI: 3.87 R-227.0 m2 75.1 sq. ft.140.0 mm 5.5 in.read more >>