Metal Roof Cathedral Ceiling Insulation

The house has steel roofing installed over 1x3 purlins.

Metal roof cathedral ceiling insulation.

Unvented roof assemblies should be insulated either with air impermeable insulation rigid foam or spray polyurethane foam or with a combination of foam and air permeable insulation. Cathedral ceilings that are properly designed to addresses the source of water vapor dissipate the movement of water vapor through the assembly and ventilate collected moisture will help to ensure long term roof system performance and enjoyment of the ceiling for years to come. So the heat loss from conduction is about the same. Our plan is to put rigid board up between the 2x4 s caulk the edges and then hang sheetrock.

While fiberglass insulation is an excellent and effective product for insulating most building cavities in areas where there is extra risk of trapping moisture and thus rot or mold infections such as crawl spaces and cathedral ceilings where roof venting may be absent or minimal we prefer to use closed cell foam insulation products or spray. It is a common misunderstanding that roof insulation is more important than wall insulation because heat rises hot air does rise but the temperature at your ceiling is at most a couple of degrees warmer than at the floor or walls. If i have a 9 5 inch rafter for a vaulted ceiling in a very cold climate could i put 2 inch solid insulation on top of the 2x4 purlins and seal with foam the the roofing paper on top then the metal roofing with pink batts under with the poly. Below is 1x decking and 2x4 rafters.

Existing is a fourteen year old roof with 2 of closed cell roofing foam with an acrylic elastomeric coating. I m concerned about possible condensation on the underside of the steel roofing and i would like to know the best way to insulate this ceiling from the underside. Can i insulate with foam board. The right way to insulate attics and cathedral ceilings with batts using certain t.

If you don t want to use sips or nailbase read this article tolearn the four basic approaches to insulating unvented roof assemblies. A cathedral ceiling is a sloping and pointed ceiling which is usually high and open. 3 regarding roof insulation vs. Flat roof cathedral ceiling we re going to give it a try.

Cathedral ceilings are a feature in many homes that add to value to the house because the high ceiling tends to make rooms look larger.