What is the difference between a curtain drain and a footing drain?

A curtain drain is installed in the yard uphill from a structure to intercept subsurface water before it reaches the foundation. A footing drain is installed directly at the base of the foundation to collect water that has already arrived and prevent it from entering the basement or crawl space. They serve different purposes and are located in different places.

Is a French drain the same as a curtain drain or footing drain?

The term 'French drain' is ambiguous and can refer to either system depending on who is using it. To avoid confusion, always specify whether you mean a yard interceptor drain (curtain drain) or a foundation perimeter drain (footing drain) when discussing drainage with contractors.

How much does it cost to install a curtain drain vs. a footing drain?

A curtain drain typically costs $2,000 to $8,000 depending on length and depth. An exterior footing drain on an existing home costs $10,000 to $25,000 or more due to deep excavation. An interior footing drain with sump pump usually runs $5,000 to $15,000.

Do I need both a curtain drain and a footing drain?

Many properties benefit from both systems working together. A curtain drain intercepts the bulk of subsurface flow uphill, while a footing drain handles residual water at the foundation. Homes on hillsides with basements are the most common candidates for a combined approach.

How long do curtain drains and footing drains last?

A properly installed curtain drain with filter fabric and clean aggregate should last 20 to 30 years or more. Footing drains can last the life of the home if installed correctly, but are vulnerable to root intrusion and iron ochre clogging. Regular maintenance extends the lifespan of both systems.

Can I install a curtain drain myself?

Curtain drains are one of the more DIY-friendly drainage projects because they're relatively shallow (18-36 inches) and located in the yard. However, proper design — including correct placement, slope, aggregate selection, and filter fabric — is critical. Footing drains should almost always be installed by professionals due to the depth and structural risks involved.

Curtain Drain vs Footing Drain: Key Differences Explained

Learn the critical differences between curtain drains and footing drains, when to use each, and how they protect your home. Expert guide from Low Point Labs.

By Low Point Labs

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