How much cellulose insulation do I need in my attic?

There are a variety of factors that determine the amount of cellulose insulation needed in your attic. One of the most important factors is the thermal conductivity. Thermal conductivity is the ability of a material to transfer thermal energy. The lower the thermal conductivity of a material, the better it is at insulating your home.

How much cellulose insulation do I need for my attic?

The amount of cellulose insulation needed in your attic depends on many different factors. Cellulose insulation can be used in unfinished attics, finished attics, or combination unfinished/finished spaces. When estimating the amount of cellulose needed, start by taking into account the size of your unfinished attic. Cellulose batts come in different thicknesses, and the insulation value they provide will vary as well.

How to determine r-value of cellulose insulation?

The amount of cellulose needed is dependent on the r-value of the existing insulation and the temperature of your attic. Cellulose insulation is most effective when it’s keeping warm air in during cold weather and keeping cool air out during hot weather. The higher your attic’s r-value, the better it works.

How to calculate the r-value of the cellulose insulation in my attic?

The insulation rating of cellulose is actually its total thermal resistance value in the form of a single-stage r-value (RS, for resistance to heat flow). You can use this number to determine how well an insulation job has been performed. The higher the rating, the better the insulation is at keeping conditioned air in and unconditioned air out. The rating is expressed in either m²kW/m²·°C (SI-value), or in the older system, in feet

How much cellulose insulation an attic needs?

There are many variables that determine the amount of cellulose insulation you need in your attic. From the size and shape of your attic to the insulation performance and R-value of your existing insulation, there are many different variables to consider. There is no one-size-fits-all solution for your attic’s cellulose insulation needs.