Where Does The Rainwater Go From My Roof

Gutters and a downspout.

Where does the rainwater go from my roof.

To prevent it damaging the walls drenching persons standing below or entering the building and to direct the water to a suitable disposal site where. Rainwater can be collected from most roof types depending on the quality of rainwater required. Rain barrel supplies list. Collect from any roof material except unsealed asbestos.

The first step in sizing a roof drain is to calculate the surface area of the roof that the drains will be covering as well as the average hourly rainfall rate at the building location. Capillary action is a water activity in which water adheres to a surface and follow the surface. Ensure all gutters fall towards the outlets. While some water can be blown into the attic through almost any type of soffit vent the amount of water intrusion increas es dramatically when the.

Rain barrels for example do not provide any type of disinfection or filtration. In a charged line rainwater system the water is pushed into the tank by water pressure in the pipe. Any trees touching or hanging over the roof should be trimmed back. Just a half inch of rain falling on a 1 000 square foot roof will yield 300 gallons of water.

Dirt and germs can be washed into collected rainwater from the roof especially when rain follows several days of dry weather 3 4 9. So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall. Sizing a roof water drain. To get an idea how much water the roof of your own house might yield use the rainfall harvest calculator above.

Minimizing water intrusion through roof vents in high wind regions 2 of 8 r 7 oofing 12 10 mitigation guidance soffit vents key issues n it is important to keep the soffit ma terial in place. Take the dimensions of the footprint of your roof and convert them to inches. The next step is to determine each roof area that will be served by a separate leader drain pipe scupper or downspout. For garden or lawn irrigation.

For example most ranch style homes have a 3 12 or 4 12 pitch roof. A rain gutter eavestrough eaves shoot or surface water collection channel is a component of a water discharge system for a building. Adding chlorine or iodine to water does not protect against chemicals and some parasites are very chlorine tolerant. In this example 600 x 240 x 1 144 000 cubic inches of water divide by 231 to get the number of gallons because 1 gallon 231 cubic inches.

When the roof shingles do not extend past the metal drip edge the water will suck back on the metal drip edge this is called capillary action and run behind your gutters.