Flow Down The Roof

You might not notice it for years but eventually rot will destroy sheathing and framing.

Flow down the roof.

Kick out flashing is critical where a roof edge meets a sidewall. This means that the rise of the slope goes up or down 8 inches for every 12 inches. The metal roof forms a valley where one roof meets another. Drip edge is available at hardware stores and it is made.

The slope of a roof or pitch is determined by how many inches the roof rises over 1 foot or 12 inches. Look for potential entry points like roof vents valleys loose nails and mark the area with chalk so you can examine the exterior of your roof after it quits raining. An example for a steep sloped roof is 8 12. Hot air exhaust vents located at the peak of the roof allow hot air to escape.

Insert the head into the vent opening and feed it down until you encounter resistance. If it is reduced further the flow boundary will at first be sucked down and will continue to flow along the slope and a change from pressure to suction will occur. To put it in perspective the angle of this slope would be around 30 degrees. Numerous people have tried ideas but none have worked.

Penetrations can include plumbing and roof vents chimneys dormers or anything else that projects through the roof. Also look for a thin stream of water flowing down one of the rafters. Crank the handle to work the head through the obstruction. They can be several feet above the leak or to the right or left of it.

Bring a 20 foot sewer auger onto the roof. Look for damp spots on the underside of your roof. If the slope of the roof is reduced a point will be reached at which pressure on the windward slope becomes zero. If you have attic access the easiest way to track down a leak is to go up there with a flashlight and look for the evidence.

Turn it upside down so the lip edge faces upwards. This valley shoots rain in a flume during our frequently heavy downpours. Without it roof runoff flows down the wall and possibly into the wall. Place a piece of standard metal drip edge onto a table or between a pair of sawhorses.