There are only 2 types of insulation that should be used for this method.
Insulation between roof and ceiling.
Whether it s thermal insulation or acoustic insulation you are after we can help you with product choice and installation advice.
This can be achieved through the use of truss joists scissor truss framing or sufficiently large rafters.
Cathedral ceilings must provide space between the roof deck and home s ceiling for adequate insulation and ventilation.
Furthermore most ceiling and roof insulation have good sound insulation qualities.
The reason is because it is very difficult to properly ventilate a flat space because air does not generally move in a straight line.
R 38 is the industry standard and the minimum thickness for r 38 is 12 inches.
If your current insulation is only five inches deep you will need to add seven inches of insulation to achieve the 12 inch r 38 rating.
Ceiling insulation refers to any type of insulation installed within the floor nearest to the roof structure of the home.
Sprayed on polystyrene or rigid insulation is usually installed as part of a re roofing project.
These include autex bradford knauf and air cell to name a few.
Spray foam either closed or open cell insulation or dense pack cellulose insulation.
Install rigid insulation between the roof decking and the upper membrane.
Roof insulation refers to the practice of installing insulation on the roof slope both above and below the rafters.
Insulate above a dropped ceiling or in an attic with loose fill fiberglass or cellulose or fiberglass batt insulation.
Insulation between ceiling rafters.
Measure the area needing insulation.