Re: Do I need to cut out ceiling - plumbing questions
First, what caused the pipe to burst in the first place? Will replacement prevent future problems or will the pipe need insulation or other protections?
To replace the pipe, access will have to be gained to the problem pipe. How much demolition of walls and ceilings will depend on how much pipe is going to be replaced. I personally would only replace the damaged copper with new copper. IMHO, pex is garbage and not worth the time or expense to install it. My suspicion is you have a lazy plumber who wants to make his life easier by running pex rather than doing the job right. Copper is a better product that will last longer with pex without the problems associated with pex.
How much will all this cost? I recommend consulting with whomever is going to be doing the drywall repair. It will likely be cheaper and easier if the drywall repairman does the demolition rather than the plumber who doesn't care how much of a mess they make (i.e., more damage than necessary ).
I'd also recommend consulting with several other plumbers for competitive bids, rather than relying on one who wants to immediately replace good pipe, just because he's lazy. It is likely that you will be able to find a general contractor who can do all the work himself, reducing overall costs and hassles.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!