(redirected from Insulation value)
Also found in: Financial, Encyclopedia.


A measure of the capacity of a material, such as insulation, to impede heat flow, with increasing values indicating a greater capacity. Also called R-factor.

[r(esistance) value.]


(ˈɑrˌvæl yu)

a measure of the resistance of an insulating or building material to heat flow, expressed as R-11, R-20, and so on; the higher the number, the greater the resistance to heat flow. Compare U-value.
[1945–50; R, symbol for resistance]
Mentioned in ?
References in periodicals archive ?
Foam made of polyurethane provides high insulation value, and helps cut down on space requirements for walls and roofs; this helps maximize building volume.
Glue is a latex-based adhesive specifically designed for bonding polystyrene foam to itself - permanently joining foam boards to the substrate without compromising the insulation value of the foam.
0% improved flow by 24%, 22% and 92%, respectively, while maintaining density, good insulation value and percent closed-cell content (table 6).
The company's key focus in the Middle East is the engineering, manufacturing, and supply of cellular glass insulation, which provides superior long term insulation value and fire protection for sophisticated processes such as the gas processing, petrochemical, and refining businesses.
When this happens the insulation gets wet and the panel loses its insulation value.
2(1), where minimum R-value requirements per climate zone are found, mass watts require the lowest insulation value, primarily due to the effective performance combination of mass with insulation to dampen the diurnal impact on the building mechanical systems.
It delivers high performance with less mass and blanket thickness whilst maintaining the same insulation value, resulting in both weight and cost savings.
The external walls have been insulated with sprayed polyisocyanurate foam insulation, which provides an overall insulation value of R-60 (RSI-10.
We've also thought about installing a loft about eight-feet high over sections of the barn to provide further insulation value.
Single, double and even triple internal films that create as many as four separate cavities inside the insulating glass unit can achieve a center of glass insulation value of R-20 superior to an insulated wall.
The formula takes into account glass type, solar and visible light transmittance and reflectance, shading coefficient and the heat insulation value.