What is a Ridge Cap? (with photos)

A ridge can be installed on a sloping roof.

A ridge is a building material that is installed along the ridge line of a pitched roof. A traditional gable roof on a house is made up of two sloping sides that meet in the middle. The point where these two sides meet forms the apex of the roof and is known as the ridge or ridge line. A ridge ridge fits into the joint between these two edges to keep rain and snow out of the house. It also helps to finalize the roof’s appearance by creating a hermetically sealed joint along both sides.

Prefabricated roof covers can be used when workers are installing roofing systems.

Some form of ridge is used on almost all types of pitched roofs. The most basic type of unit consists of asphalt shingles, which are cut to fit the ridge. The shingles are installed in overlapping rows until they reach the ridge, then rolled up to meet the other side of the roof. A second set of shingles is cut to fit the top and provide a cohesive finish to the roof.

Asphalt shingles can be cut to fit over a ridge.

Some builders may use prefabricated roofing when installing roofing systems. These units can be made from asphalt shingles, aluminum, copper or even plastic. They are usually chosen to match the rest of the roof surface, although some may simply be covered by additional roofing material. Many uncovered ridges are either painted or pre-finished at the factory in a variety of colors and designs to match popular roofing materials.

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An opening in the ridge can help provide greater levels of comfort for the home’s occupants.

The crest opening is often used to help ventilate the home, which can lead to greater energy efficiency and greater comfort levels for occupants. To add a crest opening, a hole must be cut along the entire length of the crest to create air flow. A plastic or metal vent is nailed over the ridge to cover this hole and then covered with shingles or a separate ridge gap to create the desired look.

Most ridge openings are flared to allow hot air to escape without letting water into the house. They feature an inverted ā€œVā€ shape that fits over the ridge while standing just above the roof surface. Since water cannot go uphill, moisture cannot penetrate the house through these openings. This distorted structure also helps keep out dirt and leaves and minimizes the impact of gusts of wind. Some ridge openings may use a mesh screen to keep insects and other pests from entering the house.

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