Downspouts need to discharge away from the home

Downspout pouring water around the exterior walls of the home.

For most people, gutters and downspouts are usually an afterthought. 

     These components of your home don’t seem to do much, and may go unnoticed by occupants of a home until they are not performing their intended function and leaking, or you notice water leaking in your basement.

 

 

     When it rains, or the snow melts from your roof, massive amounts of water will drain off the rooftop, and will fall down around the exterior of your home. Gutters are designed to catch rain water that falls onto the roof of your home and direct that fallen roof water to a nearby downspout. 

 

     The downspout should then lead the roof water down the side of the house, and away from the foundation of the home, to prevent water intrusion into the basement or crawlspace walls which can lead to damaged or leaky foundations, rotted wood, or mold growth inside the lower levels of the home. 

 

     Downspouts will run down from the gutters around the roof eaves, down to the ground, where they will either 

travel underground via underground storm-sewer drains to a city storm-sewer, or they can run to a nearby storm water run-off/reservoir; or the downspouts will simply discharge out onto the yard.

 

 

     Downspouts that empty out onto the yard around the house are common in rural areas that do not have storm-sewer infrastructure. Downspouts that discharge out onto the yard are also very common at garages, outbuildings, and sheds. Many times, people do not think about where all of the rain water will go once they let a downspout pipe pour the water out near their home. Such is the case when water in the downspouts empties out onto a garden bed, somewhere within six feet of the home, or a downspout pipe that is discharging water towards a low spot around the exterior of the home. 

 

     Often times water easily accumulates around the home because downspouts are pouring water out within close proximity to the home. Remember that over time, every time that it rains, water accumulates closely around these downspout pipes that are emptying out near the foundation or against the basement walls of the home. 

 

      The above mentioned water accumulation around the exterior of the home will usually causes a water stain or efflorescence to appear from grade level on down the foundation wall, as observed from inside of the basement or crawlspace. 

 

Downspout discharging water above the ground
This above grade downspout is discharging water too close to the exterior walls of the home which can make the foundation walls wet. The splash block is also mis-aligned and most likely not performing its intended function during heavy rains or snow melt when water will be flowing the most.
Basement walls tend to show water stains in the corners or areas that are adjacent to water accumulating outside of the foundation over a long period of time.

      Correction would usually require extending the downspouts further away from the foundation walls so as to avoid water accumulation near or against them, which is usually a direct cause of localized water seepage or leakage. These downspout extension tubes are generally very affordable and can be found on Amazon by clicking on the photo below.

 

  • Pro-Tip: Corrugated plastic downspout extension tubes are more ideal to use for directing water away from the foundation walls than splash blocks. Splash blocks are the smaller 1-2 feet long plastic tray-like diverters but these do not seem to extend the water far enough away from the foundation and these tend to fail over a number of years. Instead, corrugated plastic tubes typically extend to around 4 feet or longer, and can be connected together to extend longer, which is ideal for directing discharging water as far away from the walls of the home or structure as possible. 

Splash blocks do not extend the water as far and typically become knocked over or sloped backwards towards the home over time which prevents the splash block from fulfilling its intended use. 

 

It is important to direct downspout extension tubes towards an area of the yard or garden that is both away from the foundation, and also to an area where the ground is sloping positively away from the foundation. There is no use extending a downspout away from a home if the slope of the yard is slanting backwards towards the home. Be sure to direct your downspout extension tubes both away from the structure/foundation and also on a piece of land that slopes properly away from the foundation.

 

   Safety Concern: One more important tip is to avoid discharging downspouts out onto a stone or cement walkway. This water that flows out from the downspouts can freeze and cause a slippery trip hazard or other safety concern for occupants of the home/building during freezing temperatures. Downspouts ideally should discharge onto soil of some sort. (Grass, garden-bed, underground drain, etc.)

 

Remember to ensure that the water does not empty onto a garden bed that sits up against the foundation walls of the building, especially where dampness is occurring inside , because the garden bed can hold water against the outside of the leaky walls and exacerbate the issue.

 

A corrugated piece of plastic pipe being used as a downspout extender. Be sure that the pipe sections do not become disconnected.

20 thoughts on “Downspouts need to discharge away from the home”

  1. Wow…what an informative site!
    Can you post more information about the products you would use to resolve these issues?

    1. Yea thanks so much! Glad you find this stuff helpful. Ill go back up and post some links inside of the article to some of the products that I have used for my home and for client’s properties.

  2. I know this website presents quality dependent articles or reviews and extra stuff,
    is there any other site which offers these kinds of stuff in quality?

    1. I do not know of many other sites that are posting original content with regards to experience or product reviews. All of these products I own, use, or have used before in the past. I will continue to add more content as I document my experiences both as a home inspector, wet basement consultant, and rental property owner. The aim at wetbasementinspections.com is that you find the site value-able enough that eventually there will be no need to search elsewhere for questions with regards to keeping your leaky foundations dry and comfortable. Hopefully these articles help you to regain useable space in your basement once again.

  3. מזהה רוצה תודה על המאמצים יש לך לשים כותב את זה אתר. אני מקווה להציג אותו בדרגה גבוהה פוסטים על ידך בהמשך גם כן. למען האמת, יכולות הכתיבה היצירתית שלך יש עודד לי לקבל שלי מאוד משלו אתר עכשיו;)

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