Why can't I replace a flexible sink drain with rigid PVC?
Installers often claim rigid PVC cannot replace unsightly corrugated drain pipes because off-the-shelf rigid kits lack the exact alignment and adjustability needed for existing wall stub-outs and tailpieces. This leaves homeowners stuck with an ugly, incorrect flex line that professionals advise fixing, even though tight spaces or misaligned plumbing make a hard-piped conversion difficult to fit.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Keeping the existing corrugated pipe and floor drain setup as dictated by the interior team
- 2Replacing flexible pipes with conventional rigid setups
- 3Using smooth-walled flexible kits to save space
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“Does this drain set up look okay or should it be redone?”source ↗
“looks Mint...if you're blind. None of that is correct”source ↗
“Not sure why anyone would use the flex line. Fix it right.”source ↗
“It’s fine, but I would personally get rid of the flex pipe”source ↗
Where this came up
People with this problem also raised
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