Michigan · Flint

Flint Epoxy Pipe Coating: Renew Interior Supply Lines

Flint epoxy pipe coating renews aging water supply lines from the inside, bonding a smooth protective barrier to corroded cast iron and galvanized pipe to seal pinhole leaks on ½-inch through 4-inch lines. One point must be clear from the start: epoxy coating is not a substitute for lead service line removal. Lead lines must be fully replaced through Flint's municipal program — coating is only appropriate for the home's downstream cast iron and galvanized supply piping once the lead service line is gone. This guide explains where coating fits, how it works, what it costs, and how to find qualified Flint contractors.

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Find Qualified Flint Epoxy Pipe Coating Contractors

Connect with pre-screened specialists who coat corroded cast iron and galvanized supply lines from the inside — sealing pinhole leaks without a full repipe, on homes where the lead service line has already been replaced. Compare services, verify credentials, and read reviews from local property owners.

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This guide explains how epoxy pipe coating technology renews aging supply lines, where it does and does not apply in Flint, and connects owners with vetted Flint contractors.

Epoxy Coating Is Not a Lead Service Line Fix

This point comes first because it matters most. Epoxy coating does not address lead pipe, and it must never be used as a way to leave a lead service line in the ground. Lead service lines in Flint are required to be fully removed and replaced through the city's municipal program — that is the only acceptable solution for lead, and coating is no alternative to it.

Where epoxy coating legitimately fits is afterward, and on different pipe: the cast iron and galvanized supply piping downstream inside the home. Once the lead service line has been replaced, those interior lines may still be old and corroding, and that is the pipe a coating can renew. Coating is a complement to lead-line replacement, never a substitute for it.

What Epoxy Coating Solves in Flint

On the right pipe, epoxy coating protects supply lines that are corroding but still sound. Systems such as Nu Flow and ePIPE coat the line in place.

Corroded Cast Iron and Galvanized Supply

Flint's older homes carry interior cast iron and galvanized supply pipe that corrodes and scales from the inside, springing pinhole leaks and restricting flow. Coating seals the interior and stops the corrosion at its source.

The Minimal-Disruption Choice

Because coating works through the existing pipe with little wall demolition, it renews an older home's supply lines without a full repipe — provided the pipe still holds its structure.

How Flint Epoxy Pipe Coating Works

The process renews the pipe in place through existing connections:

1. Inspection & Assessment

The line is evaluated to confirm the pipe is structurally sound enough to coat rather than replace.

2. Cleaning & Drying

The interior is cleared of scale with abrasive air and dried so the epoxy bonds to bare metal.

3. Epoxy Application

A two-part epoxy resin is blown through the line, building an even barrier — related to spray lining.

4. Cure & Verify

The coating cures to a hard, seamless surface, then flow and pressure are checked before the line returns to service.

Cost of Epoxy Pipe Coating in Flint

Typical Flint Pricing

Epoxy Coating (per linear foot) $55 – $170
Single Supply Line / Section $1,800 – $5,500
Inspection & Prep $300 – $700
Whole-Home Supply Coating $3,500 – $11,000

For a full breakdown, see our complete trenchless cost guide.

Flint-Specific Cost Factors

Price depends on pipe length and diameter, the number of fixtures and bends, and how much corrosion must be cleaned first. For deteriorated pipe, our guide on when to replace versus repair helps judge whether coating is worthwhile.

Flint Areas We Serve

Carriage Town

Historic district, aging interior supply

College Cultural

Early-1900s homes

East Village

Historic neighborhood

GM-Era Neighborhoods

Galvanized supply prone to scale

Civic Park & Mott Park

Established older housing

Outer & Newer Areas

Later supply piping

What to Look for in Flint Epoxy Coating Contractors

Coating quality depends entirely on prep and even application. Verify the following before hiring:

Flint Epoxy Coating Contractor Checklist

Michigan State Plumbing License — required for pipe work in Michigan
Confirms Lead Line Is Replaced — verifies the lead service line has been removed before coating downstream pipe
Potable-Water Approval — coating rated and certified safe for drinking water lines
Certified Coating System — manufacturer-certified epoxy and trained applicator
Written Warranty — coating material and workmanship warranty in writing
Insurance & Bonding — adequate coverage for the project scope

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Other Trenchless Services in Flint

Epoxy coating is one option among several. Common related Flint services:

Trenchless Services in Other Michigan Cities

TrenchlessNet serves homeowners across Michigan's major metro areas — from Genesee County to Metro Detroit and beyond:

Frequently Asked Questions

Can epoxy coating be used instead of replacing a lead service line?

No. Epoxy coating is never a substitute for lead service line removal. Lead lines in Flint must be fully replaced through the city's municipal program. Coating only applies to downstream cast iron and galvanized supply piping after the lead line has been removed.

Is epoxy coating safe for drinking water lines?

Yes, when a potable-rated, certified coating system is used by a trained applicator on appropriate cast iron or galvanized pipe. Confirm your contractor uses a product approved for potable water before work begins.

Can my old galvanized pipe be coated?

Often yes, if the pipe still holds its structure. Severely corroded or thin-walled pipe needs replacement instead, which is why an inspection always comes first.