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Top Exterior Drain Tile Pros in Metro Detroit
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Exterior drain tile in Metro Detroit: what to expect
Exterior drain tile is perforated pipe laid next to the footing on the outside of the foundation, usually with a waterproof membrane on the wall. Many older Metro Detroit homes were built with clay tile that has since clogged, collapsed or been cut by roots, leaving water trapped against the wall in clay soil.
The job means excavating along the wall down to the footing, cleaning and repairing the wall, applying a membrane or coating, laying new pipe in clean stone, and routing it to a sump or approved outlet. It is the most thorough way to keep water off a foundation, and the most disruptive to the yard.
Where digging is impractical, interior drain tile is the common alternative.
What a proper job includes
- MISS DIG 811 locate request before digging
- Excavation to the footing along the affected walls
- Wall cleaning, crack repair and a waterproof membrane or coating
- New perforated pipe in washed stone with filter fabric
- Connection to a sump pit or approved outlet
- Backfill, compaction and grading away from the house
- Written warranty and restoration terms for the yard
What drives the price
- Linear feet of wall and depth to the footing
- Obstacles: driveways, porches, stairs, decks and landscaping
- Membrane type and wall repairs needed
- Whether a new sump or outlet is needed
- Soil conditions and spoil hauling
- Hand digging in tight spaces between houses
- Yard restoration included or excluded
Rebuild Detroit does not publish price ranges. Get written quotes for the same scope and compare.
Permits and licensing in Michigan
Michigan licenses basement waterproofing as a Maintenance and Alteration Contractor trade through LARA, and a Residential Builder license also covers it. Jobs above a threshold set by state law must be done by a licensed contractor, so look up the license number on the LARA lookup before you sign.
Permit needs depend on scope and on the local building department: work that cuts into or alters the foundation generally needs a building permit, and in Detroit permits are issued by BSEED. Any exterior digging requires a free MISS DIG 811 request at least 3 business days ahead.
Verify: LARA license lookup MISS DIG 811 for homeowners Detroit BSEED How We Vet
How to compare quotes
- Confirm how many walls are included and how deep the excavation goes.
- Compare membrane products and how the pipe will discharge.
- Ask what yard, concrete and landscape restoration is included.
- Check the license on the LARA lookup and ask for proof of insurance.
- Confirm who calls MISS DIG 811 and who pulls any permit.
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Exterior Drain Tile FAQ
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