Roof Flashing Definition

The upper triangular portion of a sidewall that comes to a point at the ridge of a double sloping roof.

Roof flashing definition.

Roof definition is the cover of a building. In modern buildings flashing is intended to decrease water penetration at objects such as chimneys vent pipes walls windows and door openings to make buildings more durable and to reduce indoor mold problems. Definition of a roof valley. How to use roof in a sentence.

Open valleys have metal flashing to protect this critical area of the roof. There will be flashing around the bottom step flashing around the sides and finishing with saddle flashing around the top. Flashing definition pieces of sheet metal or the like used to cover and protect certain joints and angles as where a roof comes in contact with a wall or chimney especially against leakage. Flashing refers to thin pieces of impervious material installed to prevent the passage of water into a structure from a joint or as part of a weather resistant barrier system.

3 12 flashing large roof penetrations 17 3 13 flashing small roof penetrations 19 3 14 expansion 20 3 15 standard roof flashings 21 3 16 non standard roof flashings cappings 24 3 17 box gutters 25 3 18 barge gutters and capping 26 4 0 typical wall flashings 27 4 1 cladding orientation 27 4 2 walling profile running horizontally 27. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. Chimney flashing will be used at the base of the chimney in multiple parts. See asphalt roof cement.

The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. The greatest portion of a roof is a flat expanse that is covered with a non permeable material such as asphalt shingles metal tiles or slate tiles to protect the roof structure and the interior of the building. A simple two sided roof above a gable. Asphalt shingles and metal flashing on a damaged canadian roof.

Flashing definition is sheet metal used in waterproofing as at roof valleys or hips or the angle between a chimney and a roof. See figure b gable roof.