Technical Jargon: R-Value

The term R-value, as it pertains to insulation effectiveness, indicates resistance to heat flow. The higher the "R" number, the greater its resistance to heat or cold.

It's important to know what your home's R-value is as this will determine your personal comfort level on a cold wintry day or hot summer night. The greater the R-value, the greater the energy resistance, which translates into lower consumption and increased energy savings.

Homes generally will have an R-value recommendation for the ceiling, walls, floors, crawlspace and/or basement band joists, and each may be different.  However, the greatest amount of heat loss, and the first area to be considered is the attic. It has been estimated that 60 per cent of heat loss occurs through the ceiling into the attic. Walls account for about 20-30 percent.

Different insulation materials will have varying R-values. Cellulose, Fiberglass, Rock Wool, Vermiculite, Polystyrene, and Urethane will all have different degrees of insulation effectiveness. The type of construction material (batts, blankets, loose fill or blown, and rigid board) will also determine the end result.

Here are some common insulation materials below. Loose Fiberglass, loose Cellulose, and lastly, batt Fiberglass.

Your home's location in terms of distance from the equater may require a greater amount of insulation. Farther north or south would dictate a greater amount of insulation. For example, Miami, Florida would suggest a ceiling rating of R-30, while Williston, North Dakota would call for R-49.  For an example of recommended Colorado values, see www.coloradoenergy.org.

Today, we've discussed insulation as it pertains to your walls, ceilings, and floors. Did you know windows and doors also have an R-value ?