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 ...

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. R-Value, also known as "thermal ...

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 ...

The kind of insulation used in the construction business – that pink fiberglass stuff that normally is used in attics and walls- is well known. These insulations, mostly fiberglass, are provided with ...