Gutters and Downspouts

Hopefully you read my articles on landscape drainage. In that article, I covered the fundamental components of any good drainage system. Gutters and downspout are the part of any good foundation drainage. If properly inpspected and maintained, gutters  and downspout will properly catch water and move it away from the house foundation. If they are not properly taken care of, they can cause more damage than not having them at all.

Okay, here is my secret. No, I don’t have gutters, nor do I want to put them on my house cause they are ugly. So, now that we all know that, I can continue the article. Lets look at all the good and bad reasons to have gutters.

Gutter Goods:

  • Gutters remove water from the house and keep from damaging the ground below the roof line.
  • Excessive water around the foundation can also damage the siding and wood structure of the house
  • The constant  change in moisture content can cause constant movement. This can make pier and beams move around causing the house to shift.
  • Gutters reduce the chances of allowing excessive water under the foundation. If you have a basement or crawl space; this excessive water can cause foundation, mold and eventual termite issues as they love moist soil.
  • With some modification, you can contain the water from the roof in rain barrels for landscape watering.

Gutter Bads:

  • Gutters are ugly.
  • They can easily clog if not maintained
  • If the gutter downspout drain into an underground french drain, they can also clog the underground drains
  • Gutters are high maintenance if not shielded from leaves and debris
  • Without shielding, gutters must be cleaned throughly twice a year
  • Gutters are ugly; or did I already say that

Inspection of Gutters and Drains: Assuming you have gutters, lets look at the inspection points and thing to consider important.

  • Gutters should naturally drain based on a designed fall toward the downspout. The gutter should fall 1/4 of an inch for every 10 feet. Assuming the gutter is clear and clean, stand on a ladder  at the furthest point from the downspout. Run water through the gutter and visually watch the water move toward the downspout
  • Based on the above inspection, if you find water standing, inspect the hangers in the vicinity to ensure they are installed every 2 feet, tight and secure to the house fascia board.

Roof Gutters: Ugly as they may be, they serve a purpose. During a heavy rain fall the surface area of the roof takes on a lot of water. Naturally it will run down the roof to the edge. Without gutters, this water and the lack of a proper grade can cause excessive water to pool under the house.  The number one reason for gutters is to move the water away from the house.  Hopefully its path takes it to the street, alley or drainage ditch. Additionally, the gutter downspout should extend away from the house at least 10′  with a fall of 6″ over the 10′ distance. This will ensure the water moves away from the structure.

  • Roof Gutters combined with sub surface drain pipes: To reduce the ugliness of the roof gutter downspout, adding sub-surface drains can help. Granted, this can be expensive as these pipes must be ditched into the ground and run far enough away from the house for the water to naturally drain.
  • Dry Creeks: This may be a stone or rock drainage ditch that is normally dry until the rain water needs a place to go. Creating a Dry Creek to channel the water will assist in moving the water around or away from the residential structure. Read more about how to build a dry creek.
  • French Drains: Similar to sub-surface drains, but the pipes are normally perforated. These 4″ pipes pick up the water that is seeping into the ground; like the sub surface drains, these pipes must be ditched away from the house with a fall  and run far enough away to allow the water to drain naturally. TIP: It is not unusual to have both sub-surface and french drains, but they should not be mixed; in other words do not combine them into just one pipe system. This item is easily a topic in its self. Read more about how to build a french drain for more details.

So, ugly as they may be, they are very important. Gutters are relatively inexpensive for what they provide. It’s not uncommon to find gutter systems in need of help as they are easily neglected. Maintain them well and they will take care of you and your house.

So you may be wondering, I dont have gutters but I must be doing something, right? You are correct, but that is another story for another post.

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2 Responses to Gutters and Downspouts

  1. Bruce says:

    Nice article. It’s that time of year again for all homeowners to be stressing about their gutters. Thanks for sharing.
    Bruce@ Chicago Lawn Sprinkler Systems

  2. Jax Beckett says:

    More great tips. Great blog, I cant tell you how clogged gutters can hurt a house.

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