Homes and buildings need insulation to control inside temperatures. Are you getting the best value for your project? Here's a look at how R-Value affects what you pick.

To minimize the loss of thermal resistance in design, the R-value of roof insulation should be computed based on the actual performance of the insulation material and the local climate, says the ...

NRCA has updated their R-value recommendation for polyisocyanurate roof insulation with the publication of the 2011 The NRCA Roofing Manual: Membrane Roof Systems. The new recommendation for R-value ...

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A: R-value refers to the level of resistance to heat flow that insulation — from fiberglass attic insulation to pipe wrap — provides. Heat, of course, tends to radiate outward and upward, and ...

In addition to opaque building envelope components (walls, roofs, attics, and floors), this technology can be applied to windows as dynamic insulated shades. Using 2-step controls, the dynamic ...

Your home's R-value score will guide you toward the type of insulation you need. In general, an attic's R-value should be between R-30 and R-49. In particularly cold climates, you might go up to R-60.

The higher the R-value, the better the insulation provided. The new requirements will mean that roofs, walls, floors and windows will need to meet the revised R-values for insulation.