Another possible way to renovate a flat ceiling into a vaulted ceiling is by adding lumber to the existing roof rafters to make them deep enough to accommodate the appropriate insulation.
How to build a vaulted ceiling roof.
Roof trusses are built in a truss manufacturing warehouse and delivered preassembled to the jobsite.
Vaulted ceilings can be constructed by either stick framing which means attaching each joist and rafter individually or by setting roof trusses that come engineered from a truss manufacturer.
For example spray foam insulation helps create an air tight seal that eliminates the need for ridge and soffit venting.
Without joists the walls can bow outward and the roof ridge line may sag.
These horizontal framing members tie a building s outer walls together and resist the outward force exerted by the roof rafters in conventional framing.
Finally traditional fiberglass insulation works well in cathedral ceilings although a 2 inch breathing space between the insulation and the roof sheathing must be included.
To avoid these problems in a structure with a cathedral ceiling it helps to understand how a typical roof frame works.
This also allows you to save on lumber by using 2.
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Contributing editor scott mcbride replies.
The trick in framing a vaulted ceiling is figuring out what to do with the ceiling joists.
If the roof was built with traditional rafter and joist construction the ceiling joists.
Depending on how steep your roof pitch is vaulting a 20 by 20 foot room.
A dramatic cathedral ceiling makes a strong statement in a home s interior but make sure to follow the best practices to eliminate mold and wood rot while also saving money on lumber and materials.
A plain flat ceiling gable is actually a procession of light trusses usually spaced 16 in.
If your house has low ceilings building vaulted ceilings may be the answer.
A professional carpenter may be able to apply this method to your existing flat ceiling to convert it to a vaulted ceiling.
To convert a truss roof to a vaulted ceiling you may need to do significant reconstruction of the roof.