Your home s age if your home is more than 10 year old you likely need more insulation.
Attic insulation r value maryland.
An insulation s efficiency is indicated by its r value.
A higher r value means greater efficiency.
Maryland energy code a law that lowers energy bills keeps homes safe.
There are many ways to retrofit a home with fiberglass and.
Most areas of the country have a higher minimum r value recommendation but just about everywhere recommends up to r 60.
In general an attic s r value should be between r 30 and r 49.
Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
Where you live different climates require different insulation r values.
Duct r value supply in attic.
R 8 inside thermal envelope.
Higher values indicate better insulation.
You can achieve better thermal performance in your attic by adding an additional layer of insulation.
The r value indicated on the packaging tells how much thermal resistance the insulation provides per.
In addition atticat insulation provides an amazing r 49 value rating the recommended attic r value rating for the maryland climate zone.
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 table below shows what levels of insulation are cost effective for different climates and.
For homes in the dc area the attic should achieve an r value between r 38 and r 60.
Recommended home insulation r values.
If you have cellulose insulation you ll need an inch or two less.
In particularly cold climates you might go up to r 60.
R value is a measure of insulation s ability to resist heat traveling through it.
According to energystar gov the recommended r value for attic insulation is between r 30 and r 60.
You will need a higher r value of insulation if you live in the northeast than if you live in southern california.
The higher the r value the better the thermal performance of the insulation.
R value is the measure of your insulation s ability to resist heated or cooled air traveling through it.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
Department of energy doe published r value recommendations based on specific heating and.
However the climate that you live in will determine the r value level required to effectively keep your home at a consistent comfortable temperature.
Get a free r value rating as a way to maximize the energy efficiency of both new and existing homes the u s.
Second r value is used if more than the insulation is located on the interior.
Achieving greater r values in exterior walls.
The higher the r value the better the thermal performance of the insulation.
