4 Easy Methods Of Framing A Gable Roof Without Ceiling Joists
A gable roof is a kind of heavy structure that can collapse at any time & if you are looking to prevent your roof from collapsing, then it is important to frame the structure correctly. In a long-established framing, the framing members forming the ceiling of the building, play an important role when it comes to keeping the roof stable. As soon as those ceiling members are removed, you need to replace them with something else that will be able to hold up the weight of the roof. If you are looking to frame a gable roof without ceiling joists, then follow one of the below-mentioned methods carefully:
Method 1: Rafters And Ridge Boards
- When it comes to traditional gable-roof framing, the slope of the roof is usually formed by rafters that run downward in a diagonal direction from the top of the roof to the tops of the exterior walls of the building. The upper ends of the rafters rest in opposition to the ridge board, a parallel or straight framing member that runs through the top of the roof. The ridge board functions only as a nailing surface when it comes to the rafters and doesn't support any of the weight of the roof, the weight is rather than supported by the walls where the lower ends of the rafters rest.
- The weight exerts an outward parallel or straight force on the walls, and in traditional or long-established framing, that force is withstand the action or effect of rafter ties, which are horizontal members that run betwixt the lower ends of the rafters at the peak of the walls and keep the rafters from spreading outward. The rafter ties are also the ceiling joists in the inner section of the building, and when there is a cathedral or vaulted ceiling on the inner section, the rafter ties are absent.
Method 2: Use Collar Ties
- Collar ties are another possibility or choice of rafter ties in framing where a traditional ceiling is not desirable. Exactly as rafter ties, collar ties are parallel or straight members that tie the rafters together as well as withstand the action or effect of the force that tries to make the undersides of the rafters spread horizontally and push the walls outward.
- However, collar ties are placed higher up the rafters in order to make sure that they span the interior space at a higher level as compared to the top of the walls. If collar ties are placed higher than one-third of the way up the rafters, then they are not effective or successful in resisting the horizontal force.
Method 3: Use Ridge Beams
- A structural ridge beam can completely remove or get rid of the need for rafter ties or collar ties. A ridge beam occupies the same place as a ridge board, however, it is counterfeited from heavier lumber and, unlike a ridge board, it is usually supported at the gable ends by structural columns.
- The support helps the beam to carry the weight of or support the weight of the roof, getting rid of the load from the underside of the rafters and getting rid of the horizontal force on the walls. When a ridge beam is used, then you don't need a structural ceiling on the interior of the building.
Method 4: Opt For Roof Trusses
- Roof trusses are readymade framing units that are accurately & correctly organized in order to make sure that they can adequately support a building's roof & at the same time utilizing the smallest amount of lumber possible. Some types of trusses, such as scissor trusses, use interior support members that attach or fasten the upper parts of the truss together above the wall-top level. The underside chords of the truss are not parallel or straight, they slope upward toward the top of the roof, in order to make sure that the interior structure of the truss appears similar to the rafters in a cathedral ceiling.