pex pipe

having a issue with a home here in San Antonio. Homeowner turns on garden tub and kitchen sink faucet loses fair amount of pressure. I initially jumped to the PRV due to symptoms. I already bypassed water softener before changing PRV. Changed PRV, set psi to 75. Still losing volume once tub is...

How much daytime to nighttime pressure fluctuation can I expect in a PEX system? I've got about 130 ft of 3/4" under 100 psi test and don't have a sense of how much variation I will see. I'm in Tucson so there's about a 30º swing from day to night... Thanks!

We just purchased a home with PB piping and was planning to re-pipe the entire house. I was planning to attempt to re-pipe the house myself but decided against it since we've got several other projects going at the same time. We got three quotes for replacing with CPVC; two included patching...

Will pipe heating cable (AKA heat tape), be useful & safe on CPVC or PEX water pipes? I need to combat temperatures down to -40. (Canada, eh?) Also, is it useful & safe to use heat tape on large diameter PVC sewer line? The instructions say to never use it on anything other than water lines...