When adding additional insulation you do not have to use the same type of insulation that currently exists in your.
Adding a layer in photoshoper of insulation in the attic.
By reducing energy.
The higher the r value the better the thermal performance of the insulation.
Some attic floors that already have a layer of insulation could benefit from an additional application over the existing layer.
To find out if you have enough attic insulation measure the thickness of the insulation.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
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.
By adding insulation to your attic you ll not only reduce your monthly utility bills but also enjoy improved energy efficiency and greater comfort throughout the year.
The vapor retarder on top of or between layers of insulation can trap moisture.
So maybe too air tight is an eventual possibility.
The extra batting increases r values so it further slows warm air.
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.
We do plan to deal with the walls later by taking down the wood boards adding insulation and a layer of plastic then putting the boards back up.
Faced insulation should not be placed on top of existing insulation in the attic.
So it s time to pay close attention to what s happening up there.
An attic that has never been insulated requires at least 6 inches of top quality insulating material and an attic with a thin layer of insulation can be insulated with 4 inch blanket insulation.
Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder face.
If it is less than r 30 11 inches of fiber glass or rock wool or 8 inches of cellulose you could probably benefit by adding more.
Believe it or not there are situations in a home when you should remove the old attic insulation before adding more over the existing and in this short video.
Add the right kind of insulation.
Blanket insulation typically comes in rolls that are twenty four inches wide since this is the most common width of open spaces between joists but.