Behind the tile
Shower Valve Replacement in Newmarket
If your shower runs scalding when someone flushes, or drips no matter how hard you turn the handle, the trouble lives inside the wall. We replace the valve and leave the tile as intact as we can.
- Cartridges, stems and valves for the common brands on hand
- Shut-offs replaced if they seep or seize
- Traps and supplies swapped while the cabinet is open
- Full hot and cold test with dry joints at ten minutes
Cues for shower valve replacement
- Water temperature jumps when a toilet flushes or the dishwasher starts.
- The showerhead or tub spout drips constantly after shut-off.
- The handle is stiff, grinds, or spins without changing temperature.
- Replacement cartridges for your valve are no longer made.
- Stains or soft drywall appear on the other side of the shower wall.
Fixture job sheet
- Tools on the truck
- Basin wrench, cartridge pullers, seat wrenches, P-trap kits, braided supplies
- Parts we swap
- Cartridges, O-rings, stems, aerators, shut-off valves, trap arms and slip nuts
- What we look under
- The cabinet floor for old stains, the shut-off for seepage, the trap for slow drips
- How we prove it
- Full hot and cold flow, a filled and drained basin, dry joints after ten minutes
What fails inside the pipe, and why
Bathrooms finished before the late 1990s often have two- or three-handle valves, or single-handle valves without pressure balancing. Those let the temperature swing when cold water is drawn elsewhere, which is how scalds happen. In newer homes the valve is usually pressure balancing, but scale from town water stiffens the spool and wears the seals. Houses on the moraine around Oak Ridges include some older properties still on private wells, where the water can be harder still.
On the job: tools, parts and steps
- Try the cartridge first. If parts exist and the valve body is sound, a new cartridge often solves it without opening the wall.
- Plan the access. When the body has to go, we look for an access panel from a closet or the back side of the wall, so tile stays put.
- Install a pressure-balancing valve. Soldered or crimped in, set to a safe maximum temperature with the limit stop.
- Seal up and test. We test under pressure, fit the trim, and leave an access panel where it makes sense.
What decides how big the job gets
Cartridge replacement sits at the low end. A full valve swap from the back of the wall is moderate. Working from the tiled side, where a few tiles must be cut and replaced, adds time and depends on whether matching tile is available. Many people combine the valve swap with a larger refresh, which our bathroom renovation plumbing page covers. Country homes on a well sometimes discover the real culprit is pressure from a tired pump; see well pump service.
Shut it off and call, or book it?
A dripping spout wastes water but can be booked. Water staining a ceiling below or a valve that will not shut off at all needs prompt help: close the main and call (365) 517-0623. The same visit is a handy time to check your hose bibs before cold weather, as our guide to winterizing outdoor taps explains.
Whichever case you have, we will name the valve brand, explain whether parts are available, and give you the options side by side, including the cost of a cartridge-only fix if that is realistic. Nothing gets cut open until you have agreed to the plan and the price.
Asked on site
Do I have to replace the tile?
Not usually. Access from behind or a careful cut-out on the tile side is often possible. We explain the plan before cutting anything.
What is a pressure-balancing valve?
It keeps the ratio of hot to cold steady when pressure on one side drops, which prevents sudden scalding or cold blasts.
Can I keep my existing trim?
Only if it fits the new valve. Most manufacturers pair trim to a specific valve body.