Insulating Tongue And Groove Roof

The largest vent cross section available 10 sq in.

Insulating tongue and groove roof.

Moisture goes right through fiberglass and will condense on the cold underside of your roof. Over 86 open for up the slope ventilation. The house has a cathedral ceiling throughout with tongue and groove boards attached directly to the roof joists. I ve seen a lot of problems with insulated cathedral ceilings especially those with tongue and groove planks instead of sheet rock.

Because of potential moisture issues i would personally never use a loose insulation like fiberglass in these ceilings. Say what you want about them but osb and plywood do not offer a very attractive finished look. Building a structural tongue and groove roof deck. The insulation for exposed rafters is installed on the exterior side of the finish ceiling.

Tongue and groove boards were used for decades prior to the widespread adoption of plywood as a sheathing material in the 1950s and 1960s. The main reason to use tongue and groove boards these days is appearance from beneath the roof. Foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products in a wide choice of sizes thicknesses and edges with a lifetime limited warranty for the life of the home or building. Ceilings such as this are usually insulated with six or eight inches of rigid insulation on top of the tongue and groove then a layer of plywood is screwed on thru the insulation to the tongue and.

Tongue and groove board edge to reduce gaps and eliminate drafts. The lightweight moisture resistant and thermally efficient type iv extruded polystyrene foam insulation is suited for a wide range of residential and commercial construction applications. Tongue and groove roof decking especially the one from solid wood boards is one of the two most common choices for residential use right now. Find all the facts and ideas about it in this article before you install one for your home design.

There are currently old fiberglass batts up there for insulation right on the tongue and groove boards with some space above the fiberglass for air to pass through we have large continuous soffit vents on the front and back eaves and a continuous ridge vent. Exclusive tongue and groove design reduces heat loss up through panels. Among other things this video covers how we re doing the insulation in a way that leaves the framing and. This is often a layer of tongue and groove boards nailed to the exterior side of the exposed rafters.