Shower remodeling - find out why the last one failed first

What is shower remodel?

A shower remodel rebuilds an existing shower - the enclosure, the pan or base, the wall surface and usually the valve. The important distinction is between a cosmetic refresh, where the concealed assembly is sound and only the surfaces change, and a full rebuild, where the pan and the waterproofing come out because something failed. Which one you are buying is settled by finding out where the water has been going, and that has to happen before anyone quotes a finish.

Signs you need shower remodel

• A stain, a bulge or a soft patch on the ceiling directly below the shower - the clearest possible signal that the assembly is losing water
• Tiles that sound hollow when tapped, or grout that keeps cracking in the same place no matter how often it is repointed
• Water pooling on the shower floor after the water is off, which means the fall is wrong rather than the drain being blocked
• A persistent musty smell in the room that cleaning does not touch
• Loose or springy floor at the edge of the shower, or skirting and door frames swelling near the wet wall
• The base or tray has flexed, cracked, or has a repair kit patch on it already

Seeing something not on this list? Browse bathroom remodeling problems by symptom →

How shower remodel actually works

1. 1

   Find out where the water is going before you choose anything

   The useful order is: check the visible joints and the door seal, then the drain assembly, then the pan itself. A shower can lose water through a failed drain connection, a cracked pan, a breached membrane, or simply through a gap in the enclosure that soaks the floor outside it. These have different repairs and very different prices.

   Watch forBeing sold a full rebuild before anyone has isolated the source. It is sometimes the right answer, but it should be the conclusion of a diagnosis rather than the opening bid.

2. 2

   Open enough to see the extent of the damage

   Once the surfaces are off, the framing, the subfloor around the drain and the wall cavity beside the shower can be inspected. Damage from a slow leak is usually wider than the visible stain, because water travels along framing before it appears anywhere.

   Watch forA crew closing the walls back up on damp or blackened timber. Everything wet has to dry or be replaced before anything new goes over it, and drying takes days that nobody wants to schedule.

3. 3

   Rebuild the pan or base, and test it

   Either a new one-piece base is set and its outlet connected, or a new sloped bed is built and waterproofed on site. Either way the assembly should be water-tested before anything covers it. This is the point at which the previous failure gets designed out rather than repeated.

   Watch forNo test at all. A water or flood test on a finished pan costs an afternoon of waiting and is the only chance anyone has to prove the assembly holds before it is sealed under tile.

4. 4

   Rework the valve and the fixtures while the wall is open

   A shower rebuild is the cheapest moment in the life of the room to fit a pressure-balancing or thermostatic valve, add a handheld on a slide bar, move the head to a sensible height, or build in a niche. All of these are wall-open work and none of them are practical afterwards.

   Watch forA like-for-like valve swap simply because it is what was there. If scalding when a tap runs elsewhere in the house is a known annoyance, this is the one opportunity to solve it.

5. 5

   Wall surface - tile, panel or a moulded surround

   Tile over a waterproofed backer is the traditional route and the most adaptable to an awkward space. Large-format panels and moulded surrounds are faster, grout-free, and easier to clean, at the cost of a manufactured appearance and less flexibility on dimensions.

   Watch forPanels installed over the old surface rather than a new substrate, in a shower that was remodelled because of a leak. Speed is a feature only when there is nothing underneath that needs looking at.

6. 6

   Enclosure, door and the water that escapes anyway

   A door or screen has to actually contain the spray pattern of the head you have chosen. Where the head is aimed at the opening, or where a fixed panel is too short, water leaves the shower and gets into the floor at the threshold - a failure mode that has nothing to do with the waterproofing and is frequently misdiagnosed as one.

   Watch forA frameless screen chosen from a photograph without anyone checking where the head points. It is a common cause of a "leaking shower" in a shower that is not leaking.

7. 7

   Ventilation, because the room is part of the assembly

   A shower rebuilt into a room that cannot clear its own moisture will grow the same mould on the new grout. This is the moment to confirm the exhaust fan works, actually pulls, and discharges outside the building rather than into a roof space.

   Watch forA fan that hums but does not move air, and ducting that terminates in the attic. Both are extremely common and both quietly undo the work you have just paid for.

What does shower remodel cost?

Shower remodels commonly run between $4,000 and $18,000. A surface refresh over a sound assembly sits low in that range; a full rebuild with a site-built pan, repaired framing and new glass sits high. The extent of concealed damage, not the tile selection, is what moves the number.

See the full shower remodel cost guide - by material, size and region →

If the number is the problem, here are the ways people pay for it →