Can You Use Plank and Beam on a Vaulted Ceiling With Skylights?

Plank and Beam

• Plank and beam is a somewhat misleading term referring to how a roof is built, especially inside a home. It means that the roof is made from a framework of thick beams and posts that rib the roof to provide it with proper stability. In residential homes, plank and beam roofs stand in construct to lighter roofs that are actually built in the same way, but with timber the same size as surrounding studs and joists rather than larger sizes.

Vaulted Ceilings

• Vaulted ceilings tend to follow the line of the roof rather than try to create a low, flat ceiling. This means there is no room for attic space, but the ceiling is high and slanted with the roof, giving rooms a more original, spacious appearance. Plank and beam rooftops can have a lower ceiling installed underneath them, but for a skylight, a vaulted ceiling is always necessary.

Skylight Installation

• Skylights should not interrupt any of the main planks that provide the "triangle" support for the vaulted roof. These primary beams are necessary for proper roof support, and cutting them could endanger the roof. Skylights can work very well in between the beams, however, facing downward at an angle into the room. If there is not enough room between plank and beam supports, you may have to add more supports in other areas if you want to create a skylight.

Collar Ties and Other Additions

• Collar ties are beams that you can install across your ceiling, connecting two ends of your roof for additional support. This component can increase stability so you can put in a skylight. It also adds a new look to your vaulted ceiling, which can work to the advantage of your entire room. Other beam and support additions, visible or invisible, may be able to make your skylight possible, but an architect or contractor should make the appropriate plans.