Attic Insulation R Value Maryland

R 8 inside thermal envelope.

Attic insulation r value maryland.

In addition atticat insulation provides an amazing r 49 value rating the recommended attic r value rating for the maryland climate zone. Most areas of the country have a higher minimum r value recommendation but just about everywhere recommends up to r 60. Achieving greater r values in exterior walls. However the climate that you live in will determine the r value level required to effectively keep your home at a consistent comfortable temperature.

R value is the measure of your insulation s ability to resist heated or cooled air traveling through it. The higher the r value the better the thermal performance of the insulation. An insulation s efficiency is indicated by its r value. R 6 supply in attic.

For homes in the dc area the attic should achieve an r value between r 38 and r 60. N a all other ducts. Value r 10 continuous or r 13 cavity 15 continuous or r 19 cavity duct r value supply in attic. 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 8 inside thermal envelope. According to energystar gov the recommended r value for attic insulation is between r 30 and r 60. 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.

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. If you have cellulose insulation you ll need an inch or two less.