In article , Ron wrote:
I need to repipe my house. I have plumbing running through slab and it
developed a leak. Rather than repair the pipe in the slab and risking
another leak, I'm going to abandon the slab plumbing and run pipe in the
walls and ceilings. I've heard some contractors tell me that I should use
type 'L' pipe while others tell me type 'M' is fine. Can anyone tell me the
advantages and disadvantages of either pipe and their experiences with
repiping a house.
any help appreciated.

The difference between type K,L,M is the thickness of the wall. I've never
seen type K in a home. My old home had the cheapest imported type M that
ever was made; it developed pinhole leaks inside the walls after fifteen
years or so.

http://www.engineeringtoolbox.com/16_779.html

In my new (1920s) home, I've used type L for everything that I replace. The
price difference is small and there's no labor difference.

--
Like, in not getting harsh winters, y'mean? As I look out my window
upon the British landscape it's white with snow and colder'n a witch's
tit. I suppose you'll be one of those soft Southron sodomites, so near
France you're practically a wog. --- Semolina Pilchard in alt.tasteless