Insulation Between Roof And Ceiling

For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation.

Insulation between roof and ceiling. Insulation between ceiling rafters. Roof insulation refers to the practice of installing insulation on the roof slope both above and below the rafters. Spray foam either closed or open cell insulation or dense pack cellulose insulation. At thermostruct we supply a wide range of polyester and glasswool ceiling batts as well as roofing blanket and reflective insulation materials produced by top quality manufacturers.

Sprayed on polystyrene or rigid insulation is usually installed as part of a re roofing project. There are only 2 types of insulation that should be used for this method. Furthermore most ceiling and roof insulation have good sound insulation qualities. Insulate above a dropped ceiling or in an attic with loose fill fiberglass or cellulose or fiberglass batt insulation.

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. These include autex bradford knauf and air cell to name a few. Whether it s thermal insulation or acoustic insulation you are after we can help you with product choice and installation advice.

R 38 is the industry standard and the minimum thickness for r 38 is 12 inches. Install rigid insulation between the roof decking and the upper membrane. 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. Measure the area needing insulation.