Surface Drains in Crawl Space Repair, Maryland
When our inspection traces an active crawl space water problem back to a yard that grades toward the foundation, a surface drain is often the actual fix, intercepting water at ground level before it ever reaches the wall it's been getting through. This page covers a surface drain scoped as part of a repair job, not as one piece of a full encapsulation build.
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How This Differs from an Encapsulation Surface Drain
OBW's Crawl Space Encapsulation surface drain page covers a surface drain installed proactively, one component of a complete sealed system alongside a vapor barrier and vent sealing. This page is about a surface drain added because our inspection found active water intrusion tracing back to yard grading or a low spot outside, addressed as the specific fix for the specific problem you called about, whether or not the rest of the crawl space is being encapsulated at all.
When a Repair Needs a Surface Drain, Not Just Interior Drainage
- Water source is outside the foundation, our inspector traces where water actually collects during a storm; if it's pooling in the yard before it ever reaches the wall, interior drainage alone won't stop it from getting in
- Recurring water at the same wall section, despite prior interior repairs, when the true cause is exterior grading rather than a wall or floor failure
- Low spot or drainage swale directing water at the house, identified during the same inspection that scopes the rest of your repair
Every surface drain OBW installs as part of a repair uses the same buried solid pipe and positive slope standard as our encapsulation installations. Every installation is backed by a written workmanship guarantee. Ask your inspector for the terms that apply to your job.
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