Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

From time to time my kitchen sink needs to be unplugged, and each time I invariably find accumulations of a crusty, crumbly white material in the pipes. It looks a lot like old cheese, has no particular odor of note, is often in ring shapes (so I assume it is accumulating against the pipe walls), and can be quite hard at times requiring a fair bit of manual force to snap out of place.

These accumulations don't occur at our bathroom sink and bathtub drain, both of which have corrugated plastic hosing, so I suspect it is biological (feeding off sink detritus) rather than mineralogical?

Just curious!

share|improve this question
    
youtube.com/watch?v=ZnwIIKnWJtg, or for those who prefer the original... youtube.com/watch?v=8H3dFh6GA-A –  user558 May 7 '11 at 10:53
    
If it's not a mineral deposit, then I'd post a photo so we can see what it is. Make sure you tell it to smile. –  BMitch May 20 '11 at 16:29
add comment

1 Answer

up vote 2 down vote accepted

It sounds like calcium build up to me, are you sure it's not mineral? Is your water hard? When I have replaced the PVC pipes in my sink, I occasionally see exactly what you describe, but in my case it is because of our hard water.

share|improve this answer
    
+1 sounds like to me. A little CLR will clean it right off if that's the case. –  BMitch May 20 '11 at 16:28
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.