These thermal defects undermine the r value of your attic insulation.
Wrong attic insulation.
Now that you ve air sealed your attic and basement check your attic insulation levels and add more if necessary.
For an attic or crawlspace basement encapsulation existing insulation on the attic floor or crawlspace subflooring must be extracted so as not to create two thermal boundaries.
Insulation attic insulation done wrong.
Energy saver walks us through the attic of a home in connecticut that had been previously insulated by another contractor to illustrate common mistakes being perpetrated by many insulation contractors across the country.
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.
In such cases double insulation is not better.
Simple thermal analysis reveals that if you have 5 missing insulation in an attic bare sheetrock you ll have a slightly more than a 54 drop in r value.
It can potentially cause moisture problems.
R value simply means resistance to heat flow.
And how to do it right.