Chimneys should extend at least 2 feet higher than any portion of a building within 10 feet, but not less than 3 feet above the highest...

A common vent is one vent that serves more than one fixture, functioning as an individual vent for each fixture. Wet venting is venting...

Plumbing Vents Depending on location, there are primarily two different types of plumbing vent flashing. The most common in northern...

Valleys are weak spots in roofing systems. They have a lesser slope than the adjacent roof planes. They erode faster because water is...