The R-value for insulation is a way to measure how much resistance the insulation has to heat flow. The higher the R-value, the more the resistance and the better the material is at insulating a home.

What R-values do I need in my home? After gaining a basic understanding of insulation R-value, the next thing homeowners need to determine is how much insulation they need and what R-values are ...

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 ...

R-values are given per inch, so the lower the R-value per inch, the thicker the layer of insulation you need. Attics and cathedral ceilings require the most insulation, walls and floors the least.

The insulation value of different insulation materials varies significantly. Some foam insulation materials can provide almost twice as much insulation R-value per inch thickness as do standard batts.

R-value is the "resistance of heat transfer" found in home insulation. Every region of the country has a DOE-recommended minimum R-value rating.

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.

Foam core insulation may be a popular choice for homes, but not so much for the environment. Thankfully, these eco-friendly options are great alternatives.