What Is Cap Roofing?

Cap Roofing

• Cap roofing is the process of finishing your roof at the ridge by installing ridge caps. Ridge caps are manufactured specifically for this purpose, but some types of roofing materials can be cut, trimmed or molded to handle the job. Ridge caps provide a single finishing layer that allows moisture from rain or snow to run off the roof in either direction while sealing the gap created by the roof panels on each slope.

Preformed Roof Caps

• Roof caps are installed after all other roofing materials are in place. Metal roof caps are the final trim piece that covers the adjoining metal roof panels that meet at the roof's peak. Metal ridge caps typically come in 10-foot lengths with an additional 6 inches for overlap. They can be cut to length to meet specific job needs. Concrete and clay tile roof caps are manufactured to match the color and style of the roof tiles. Cedar ridge caps are also available in a variety of colors.

Asphalt Roof Caps

• You can purchase asphalt roof caps that are premolded to fit the peak of your roof. These roof caps provide an attractive and effective finish to your asphalt shingle roof. You can also make your own asphalt roof caps by cutting the individual tabs from each shingle. Wrap the trimmed individual shingle tab over the ridge of the roof, nail the tab down and cover the nail head with roofing cement for an effective finish.

Roof Cap Vents

• You might be able to improve your attic's ventilation by installing roof cap vents. These vents run the length of your roof's ridge and allow for more even ventilation than turbine vents. Roof cap vents, sometimes referred to as ridge vents, usually will be covered by the same type of roofing material that is used for the rest of your roof to provide a pleasing appearance.