Run Down Roof

The total run is the distance from the peak to the edge of the roof which in this case is the total width divided in half which is equal to 10 feet or 120 inches.

Run down roof.

Slope a roof s slope is the number of inches it rises for every 12 inches of horizontal run a roof with a 4 in 12 slope rises 4 inches for every 12 inches of horizontal run. A measurement of roof area that equals 100 square feet an area 10 feet by 10 feet. The roof system is defined as the roof membrane including surfacing and the roof insulation. Calculate the rafter length substituting these values into the following formula.

If there were no flashing against these walls water could slowly drip into the crevice between the wall and the roof and potentially into the home. For example soak the downhill side of a chimney first then each side then the top on both sides. Since pitch is the rise over a 12 inch run divide the run by 12 to get the multiplier in this case 120 12 10. Let s say it is equal to 1 5 m.

Let the hose run for several minutes in one area before moving it up the roof a little farther. Calculate the roof pitch as the proportion of rise and run. Have your helper stay inside the house waiting for the drip to appear. The same roof has a 4 12 or 1 3 pitch.

Typically low slope roof assemblies are composed of three interrelated components. The drainage system of any roof can be located at the edge or in the middle of the roof. Tie the top to the siding or fascia and the bottom to the siding so it can t slip out while you re on the ladder. The roof membrane roof insulation and the roof deck.

How to find a leak in a roof may be the hardest part of fixing a leaky roof. Measure the rise of your roof. For a large roof it is recommended to have drains placed at multiple locations within the area of the roof. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m.

Finding the actual spot where the roof leaks is difficult because water can enter the roof in one place and run down to another before it starts soaking into the ceiling. By gary hedstrom peg hedstrom judy ondrla tremore. Pitch rise run 1 5 6 25. Things needed metal drip edge table or sawhorses 80 grit sandpaper spray paint to match the shingle color tape measure marker straightedge tin snips ladder hammer galvanized roofing nails silicone sealant.

How water runs off a roof depends on the amount of rainfall and how quickly it needs to drain. Water should run down the side of the flashing and be directed to the shingles instead of finding its way into the roof deck. The roof assembly is defined as the roof deck along with the roof membrane and roof insulation.