Easiest Way To Insulate Cathedral Ceiling

Place the insulation between the rafters or below them.

Easiest way to insulate cathedral ceiling.

Although the gba website already contains many articles on the topic we continue to receive frequent questions about the best way to insulate a cathedral ceiling. One of our favorite ideas for this material is covering popcorn ceiling with beadboard. Seal the insulation or the ceiling surface below against air leakage. Here are four mistakes to look out for and avoid at all costs if you decide to diy your cathedral ceiling insulation.

One of the best options would be spray foam insulation here s why. Cut and insert 1 or thicker high r foam insulation sheets r 8 per inch against the furring giving a 1 or greater air path between the insulation and the roof deck under the cathedral ceiling. A cathedral ceiling is often difficult to insulate as they leave very little room for ventilation which is needed to keep the insulation dry. Attach the baffles to the interior of the joists using a staple hammer and cover the wall plate area completely.

In a correctly insulated cathedral ceiling using the tight fill moisture elimination method the high density of cellulose reduces moisture penetration to the point that no vapor retarder barrier is needed. Insulating an unvented cathedral ceiling. The foam can then expand into tiny cracks and holes that traditional insulation might not fit into thereby effectively air sealing your cathedral ceiling. Icynene spray foam insulation and cathedral ceilings are the ideal combination.

As mentioned earlier cellulose has a natural density that is usually two to four times that of fiberglass. Put the baffle between the joists starting where they join at the exterior wall plate. Use closed cell spray foam closed cell foam board extruded polystyrene such as dow styrofoam or foil faced iso board. Compare wood and vinyl options and choose the one that best suits your budget and diy aspirations.

Nail 1 furring along every rafter side against the roof deck. It s therefore time to pull together as much information on the topic as possible and publish it in one place to clarify the building science issues and code requirements.