Difference Between Attic And Wall Insulation

Foam board insulation is easy to install between wall studs and over existing blanket insulation.

Difference between attic and wall insulation.

I don t understand your last question but if you have knee walls exposed to a vented attic those definitely need to be air sealed and fully encapsulated e g six sided enclosure of each stud bay. In finished attic rooms with or without dormer insulate 2a between the studs of knee walls 2b between the studs and rafters of exterior walls and roof 2c and ceilings with cold spaces above. Insulation rolls leave less opportunity for gaps between sections making them sometimes more effective. Rolled insulation is another type of insulation blanket similar to batt insulation.

Insulation is designed specifically for each area to ensure it fits the required stud spacing s cavity depth and thermal ratings r values. These tiny pieces of insulation do a great job at insulating because they spread evenly throughout the space wrapping around any obstacles like the outlets wires pipes and ductwork. Now here s a situation where a homeowner what looks like many years ago added insulation they added a three inch layer but it has facing on it and that could create a. Some installations can yield a higher r value than traditional batt insulation for the same thickness and can fill even the smallest cavities creating an effective air barrier.

Residential insulation is designed for the four main areas of your home. Seal gaps around windows and doors with spray foam insulation. The main difference between insulation batts and rolls is that batts are installed in pieces while rolls are rolled out between wall and ceiling framing. Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage.

2d extend insulation into joist space to reduce air flows. As with attics or anywhere else in your home adding more layers of insulation to your exterior walls is key to having a higher r value and better thermal performance. Insulation in a knee wall that s exposed on the back or top or bottom won t work very well. I ve always said adding insulation to your attic is some of the best money you can spend to make your house more energy efficient but whether to use faced or unfaced insulation is a great question.