Attic Insulation R Value Maryland

For homes in the dc area the attic should achieve an r value between r 38 and r 60.

Attic insulation r value maryland. However the climate that you live in will determine the r value level required to effectively keep your home at a consistent comfortable temperature. The r value indicated on the packaging tells how much thermal resistance the insulation provides per inch. You can achieve better thermal performance in your attic by adding an additional layer of insulation. R 8 inside thermal envelope.

Get a free r value rating as a way to maximize the energy efficiency of both new and existing homes the u s. N a all other ducts. An insulation s efficiency is indicated by its r value. If you have cellulose insulation you ll need an inch or two less.

If your attic has fiberglass batts you should have an r 49 layer of insulation at minimum which is around 12 or 13 inches thick. R value is the measure of your insulation s ability to resist heated or cooled air traveling through it. R 6 supply in attic. Department of energy doe published r value recommendations based on specific heating and cooling needs and the cost of energy across the country by zip code.

Value r 10 continuous or r 13 cavity 15 continuous or r 19 cavity duct r value supply in attic. In addition atticat insulation provides an amazing r 49 value rating the recommended attic r value rating for the maryland climate zone. The higher the r value the better the thermal performance of the insulation. R 8 inside thermal envelope.

According to energystar gov the recommended r value for attic insulation is between r 30 and r 60. A higher r value means greater efficiency.