Insulating Tongue And Groove Roof

Styrofoam brand tongue and groove extruded polystyrene foam insulation xps features tongue and groove edges on all four sides of 2 x 8 boards 1 thick or less and on the long edges of all other boards.

Insulating tongue and groove roof.

Building a structural tongue and groove roof deck. I ve seen a lot of problems with insulated cathedral ceilings especially those with tongue and groove planks instead of sheet rock. Moisture goes right through fiberglass and will condense on the cold underside of your roof. This is often a layer of tongue and groove boards nailed to the exterior side of the exposed rafters.

Exclusive tongue and groove design reduces heat loss up through panels. Tongue and groove boards were used for decades prior to the widespread adoption of plywood as a sheathing material in the 1950s and 1960s. Strong lightweight pink foam panels don t require special tools. The main reason to use tongue and groove boards these days is appearance from beneath the roof.

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. The insulation for exposed rafters is installed on the exterior side of the finish ceiling. 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. Say what you want about them but osb and plywood do not offer a very attractive finished look.

Because of potential moisture issues i would personally never use a loose insulation like fiberglass in these ceilings. Thermacal 1 ventilated roof insulation panels the original ventilated roof insulation performing on roofs all over america since 1987. 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. The largest vent cross section available 10 sq in.

The house has a cathedral ceiling throughout with tongue and groove boards attached directly to the roof joists. Tongue and groove board edge to reduce gaps and eliminate drafts. 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.