The trench should be at least 6 inches wide and slope down slightly 1 to 2 inches per length of pipe so water drains away from the downspouts.
Dig extended gutter downspot.
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Factors like location accessibility and landscaping come into play so it s not always a clear cut answer.
Repeat the similar procedure for the other end of the angle to connect it to the ground pipe.
A lot of homeowners wonder how far their extensions should go.
This is a trick that can make backfilling go much more smoothly later on.
Attach elbow to bottom end of downspout and connect a downspout extension to carry rainwater away from the foundation.
To be safe aim for a 4 foot minimum extension away from a downspout.
Cover the inside of the fitting with pvc cement and push it into the lower end of the gutter downspout.
To do this i cut the black corrugated pipe added a t and aimed the pipe upwards to the downspout.
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Clean gutters regularly to keep rainwater flowing freely.
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Since my in ground pipe ran right past the garage i had the garage downspout dump in as well.
Use longer extensions to make sure you re getting all that water away from your home.
This flexible downspout extension easily bends and holds its shape and can be extended from 25 55 in.
How far should a downspout extend from the house.
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Continue until you have completed the trench.
Use this downspout extension to divert water away from the foundation or connect to drainage pipe and catch basin to control drainage.
If using a splash block at end of downspout be sure the splash block and ground upon which it rests slope away from the house.
For the garage i used a downspout adapter without a leaf guard since there aren t trees close enough for that gutter to get clogged up.
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Begin digging the trench and dumping the dirt onto the cardboard.
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Start laying your drain pipe by attaching a 90 degree angle pipe to the gutter downspout.