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Basement waterproofing in Troy, MI

Newer house, wet basement anyway? Troy's subdivisions were built on drained farm and wetland clay, and a 1980s poured wall leaks at its cracks and tie rods just like an older one leaks at the block. We connect you with an independent waterproofing contractor who works in Troy for a free estimate.

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Why would a 1985 house in Troy have a wet basement?

Because of what's under it. Troy was farmland and wet prairie until the 1960s; the USDA still maps Brookston and Colwood soils, both rated poorly to very poorly drained, under subdivisions like Northfield Hills, and somewhat poorly drained Shebeon and Selfridge soils under Emerald Lakes and Sylvan Glen. Builders drained the lots, but the clay didn't go anywhere.

The city's homes are young by metro Detroit standards: median build year 1978, with nearly a third built in the 1970s and another quarter in the 1980s and 90s. Most have poured concrete walls, which is good news (no hollow block to fill with water) and specific news (they leak at cracks, tie-rod holes, window wells and the footing joint rather than along whole walls). Many were finished decades ago, so the first sign is a damp carpet edge, not a visible wall.

Troy also has the sump-pump problem of any 1970s–90s suburb: the original pumps are long gone, the replacements are on their second or third life, and the discharge lines freeze or dump too close to the house.

The Troy facts page has the housing, soil, storm and permit details with sources.

Services the contractor handles

Waterproofing systems

Interior drain tile and sump upgrades for poured walls, exterior membranes on problem walls, window-well drains.

Poured-wall crack repair

Epoxy and polyurethane injection, tie-rod hole sealing, and what to do when a crack is structural.

Sump pumps and backups

Replacement, dual-pump pits, battery and water-powered backups, discharge lines routed and insulated.

Crawl spaces

The crawl under a three-season room or a bonus-room addition: drainage, vapor barriers, encapsulation.

Finished basements, handled carefully

A lot of Troy basements have drywall, carpet and built-ins from the 90s. Interior drain tile means the bottom foot or two of finish comes off the wall and goes back on afterward. Ask the contractor to spell out demolition and restoration in the estimate so there's no surprise, and ask whether a partial system (the two wet walls, not all four) makes sense.

Cost in Troy

HomeGuide's national averages: $2,300–$7,300 for a typical waterproofing job, $5,000–$15,000 for full-perimeter interior drain tile, $250–$800 per injected crack, $650–$2,000 for a sump replacement. Troy's larger footprints (2,000–3,500 square foot colonials) push perimeter jobs toward the upper end; a single leaking crack in a poured wall is the cheapest fix in waterproofing.

Read the FAQ

Sources