From the drywall depending on the insulation type.
Insulating attic nd ceilings.
Typical ceiling insulation involves spreading either loose fill or batt the term commonly used for blanket insulation within the attic or airspace of a home.
Installation instructions this section provides a guide on how to install insulation it covers specific information on attic insulation and ceiling insulation that will assist with proper installation to meet resnet grade 1 criteria for fiberglass and mineral wool batt insulation.
Probably in more place than you think.
Because the simplest and cheapest way to insulate an attic is to add material to the floor.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
The recommended ceiling insulation level for most attics is r 38 or about 12 to 15 in.
Air seal the ceiling between the living space and the insulated attic cathedral ceiling.
In the coldest climates insulating up to r 49 is recommended.
I ll save myself 1000 words refer to this excellent diagram and ensure that your home has an airtight seal between the living space and the attic or the inside of your cathedral ceiling.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Your home needs at least some type of insulation to keep the interior temperature of your home regulated regardless of the specific climate you live in.
The higher the r value the better the thermal performance of the insulation.
Not sure where exactly to insulate.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
R value is a measure of insulation s ability to resist heat traveling through it.
But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.
The attic floor which is the ceiling of the living space below often already is insulated.
Plan to pull up the flooring and layer new insulation on top of the old.
The right way to insulate attics and cathedral ceilings with batts using certain t.
Insulation level are specified by r value.