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.

Recommended home insulation r values. You will need a higher r value of insulation if you live in the northeast than if you live in southern california. Where you live different climates require different insulation r values. Most areas of the country have a higher minimum r value recommendation but just about everywhere recommends up to r 60.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. In general an attic s r value should be between r 30 and r 49. In particularly cold climates you might go up to r 60. N a all other ducts.

The r value indicated on the packaging tells how much thermal resistance the insulation provides per. Higher values indicate better insulation. Insulation level are specified by r value. R value is a measure of insulation s ability to resist heat traveling through it.

The table below shows what levels of insulation are cost effective for different climates and. 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. 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.

The higher the r value the better the thermal performance of the insulation. Department of energy doe published r value recommendations based on specific heating and. Achieving greater r values in exterior walls. Your home s r value score will guide you toward the type of insulation you need.

A higher r value means greater efficiency. According to energystar gov the recommended r value for attic insulation is between r 30 and r 60. R value is the measure of your insulation s ability to resist heated or cooled air traveling through it. Get a free r value rating as a way to maximize the energy efficiency of both new and existing homes the u s.

If you have cellulose insulation you ll need an inch or two less. Maryland energy code a law that lowers energy bills keeps homes safe. Your home s age if your home is more than 10 year old you likely need more insulation. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.

However the climate that you live in will determine the r value level required to effectively keep your home at a consistent comfortable temperature. There are many ways to retrofit a home with fiberglass and. An insulation s efficiency is indicated by its r value. R 8 inside thermal envelope.