TL;DR
A downspout extension is the add-on, rigid pipe, hinged flip-up section, corrugated tubing, or roll-out sleeve, that carries roof water from the bottom elbow several feet away from the foundation before releasing it. Four to six feet is the working minimum, more on flat lots and clay soils, because concentrating a roof's runoff at the foundation wall is how most basement seepage and settled stoops are born.
What it means
A downspout extension is the add-on, rigid pipe, hinged flip-up section, corrugated tubing, or roll-out sleeve, that carries roof water from the bottom elbow several feet away from the foundation before releasing it. Four to six feet is the working minimum, more on flat lots and clay soils, because concentrating a roof's runoff at the foundation wall is how most basement seepage and settled stoops are born. Hinged versions politely fold up for mowing; buried solid-pipe runs to daylight or a pop-up emitter do the same job invisibly at a higher price.
Where it sits in the glossary
Downspout extension is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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