Homeowner faces a corroded, missing toilet flange on a crumbling cast iron pipe embedded in concrete, with no easy way to replace or secure the flange without excavation.

Existing inset flange requires new concrete screws, but crumbling pipe and concrete make secure anchoring difficult; no off-the-shelf product specifically addresses attaching a flange to a deteriorating cast iron pipe flush with concrete.

Severity

4High

Willingness to Pay

implied

Added

Jun 17, 2026

Workarounds Described

plans to use twist n set inset flange but unsure about concrete screws

App Concept

FlangeFix Cast Iron Repair Kit

A self-anchoring toilet flange kit designed to repair rotted cast iron pipes at concrete level. Uses epoxy-bonded stainless steel ring with expanding rubber gasket to seal inside the broken pipe, plus adjustable concrete anchors that drill through the flange into the slab—no existing flange needed.

Key Features

Expanding rubber seal grips inside broken cast iron pipe up to 4 inches diameter
Stainless steel flange ring with pre-drilled holes for concrete anchors
Includes epoxy putty to reinforce crumbled edges before installation
Adjustable anchor bolts that don't require existing flange threads

Target Users: Homeowners and plumbers dealing with corroded cast iron toilet flanges embedded in concrete basement floors

Revenue Model: $39.99 per kit retail, $99 pro bundle with epoxy and drill bit; available at hardware stores and online

Existing Solutions Mentioned

twist n set inset flange

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