Gutters Rain Water 20catchment

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Gutters are installed to capture rainwater, normally off the roof of a building.They  should be installed with slope towards the downspout–slope should be1/16 inch per lineal foot minimum

The side of the gutter closer to the building wall should be 1/2 inch higher than the side away from the building, This facilitates water draining away from the building. 

There is no rule of thumb for guttersizing because of such variables as:

  • Roof valleys.

  • Steep slope of roof.

  • Long roof distances from ridge to eave, 

Gutters should be made of inert materials. Many gutters are seamless aluminum installed byprofessionals. You can also use half-round PVC, vinyl,,and galvanized steel but  galvanized steel, copper, or aluminum are preferred guttermaterials in DFW. Copper has a potential theft problem at this time.

Gutters with lead solder which isoften found on older gutters, should be replaced The slight acidity of rainwatermight dissolve the lead into your harvested water.

When installing gutters make certain that:
1. There is a continuous slope to the downspouts  
2. Nothing slows the flow of water and debris into the downspouts. 

Areas where the water can pool collect insects, organic materials and bacteria–dangerous in potable water andundesirable in irrigation water. 

Other problems with gutters are:

  • Inadequate number of downspouts.

  • Overrunning of water, particularly from roof valleys.

  • Inadequate gutter maintenance.

In addition to the gutters, you will need: 

  • Drop outlet. 

  • Gutter hangers at 3 feet on center.

  • Brackets. 

  • Straps.

  • At least two 45-degree elbows to fit downspout pipe closely to the building side. 

Back to Rainwater Harvesting Index. 

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