Shower problems tend to fall into a handful of patterns: a drip that will not stop, water that runs hot then cold, weak spray, or a stain growing on the ceiling below. Each pattern points to a specific part, and most can be fixed without tearing out tile.
The causeWhy it happens
Inside the wall is a valve body with a cartridge that mixes hot and cold water. Over time that cartridge wears, its seals harden, and scale builds up on the pressure-balancing spool. The result is a drip from the head, a handle that will not turn smoothly, or a temperature that jumps when a toilet flushes. Leaks behind the wall are less common but more serious, and usually come from a loose shower arm, a failing valve connection or a cracked drain gasket.
DiagnosisWhat we check first
- 01Valve brand and cartridge
- We remove the trim and identify the valve so we can source the correct cartridge or rebuild kit.
- 02Shower head and arm
- Weak spray often comes from a clogged head or a flow restrictor, not the valve. We rule that out first.
- 03Signs of hidden leaks
- Loose tiles, soft drywall, a musty smell or a stain on the ceiling below tell us to look behind the wall before replacing parts.
- 04Drain and pan
- Water that shows up only during a shower, not when the valve is off, often points to the drain or pan, not the supply.
The optionsWhich repair fits, and when
We lay out the choices plainly, explain what each involves and leave the decision with you.
Cartridge replacement
The valve body is sound but the cartridge is worn or scaled. This stops most drips and temperature swings.
Valve replacement through an access panel
The valve is obsolete or damaged. If a closet or panel backs the shower, we replace it with minimal disruption.
Leak repair behind tile
A connection inside the wall is leaking. We open the smallest area that gives clean access, repair it and test it before closing.
Local conditionsShower Repair on the west side of San Antonio
Scale from hard water is the main enemy of shower cartridges in Bexar County. It packs into the balancing spool and makes temperatures erratic. In homes from the 1970s and 1980s around Leon Valley and Westwood Village, we also see original two-handle valves where parts are getting hard to find, which sometimes tips the decision toward a new valve.
From the jobCopper shower valve rough-in inside an open wall
A few things that help
If you know the brand of your shower trim, tell us when you call. Take a quick photo of the handle and plate. If water is coming through a ceiling, stop using the shower until we have looked at it.
QuestionsCommon questions about shower repair
Why does my shower go cold when someone flushes?
Your valve is not balancing pressure, usually because the cartridge or spool is worn or scaled. A new cartridge typically fixes it.
Will you have to break my tile?
Most repairs happen through the valve opening once the trim is off. If we must open the wall, we look for access from behind first.
My shower head drips after I turn it off. Is that normal?
A few drops right after shutoff are normal. A drip that continues means the cartridge is not sealing.
Related workServices that often go with it
Talk it through with usOpen 7 AM to 11 PM every day. Se habla español.
(210) 761-4788