Custom Homes, Additions & Renovations • Tampa Bay & Lakeland • (813) 363-6303
Design & Build Division

Bathroom Remodeling

Almost every failed bathroom remodel failed at the waterproofing. What is behind the tile matters more than the tile.

Request Bathroom Remodeling

A bathroom is a wet room, and it has to be built as one. Tile and grout are not waterproof. Water that gets behind them, through a failed grout line or an improperly built shower pan, has nowhere to go and will find the framing, the subfloor and eventually the room below.

That is why the decisions that matter most in a bathroom remodel are invisible once the job is done: the shower pan, the waterproof membrane, the slope to the drain and the ventilation.

Shower pans and waterproofing

A shower floor has to slope to the drain at the correct fall, and that slope has to be built into the pan rather than created by tile thickness. Above it goes a continuous waterproof membrane, with the joints and corners sealed and the membrane tied into the drain assembly. A traditionally built mud pan and a modern bonded membrane are both valid, but both have to be built correctly, and neither tolerates shortcuts at the drain.

Ventilation is not optional here

In a Florida bathroom, an exhaust fan that actually moves air to the exterior is the difference between a room that dries out and one that grows mould on the ceiling. Recirculating fans do not remove moisture. The fan also has to run long enough after a shower to clear the room, which is why a timer or humidity-sensing control is worth fitting while the walls are open.

Older bathrooms and what they hide

In homes built before the 1980s, opening a bathroom often reveals the original problem: a shower pan that has been leaking slowly for years, rotted subfloor around a toilet, or galvanised supply lines at the end of their life. Addressing those while the room is already open costs far less than returning to them later.

When to call

  • The shower or tub is leaking or the pan is failing
  • Mould keeps returning to the ceiling or grout
  • Fixtures are original and dated
  • You need an accessible or ageing-in-place bathroom
  • You are converting a tub to a walk-in shower
  • You are adding a bathroom as part of an addition

How the work is handled

  • Assess existing plumbing, ventilation and any concealed damage
  • Design and layout agreed, including waterproofing method
  • Permits where plumbing, electrical or layout change
  • Demolition, rough-in, inspection, then waterproofing and tile
  • Fixtures, vanity, fittings, paint and final connections

What affects the cost

We do not quote a number before seeing the property, because the same job on two similar houses can need different work. These are the factors that move the scope:

  • Whether the layout changes and fixtures are relocated
  • Shower versus tub and the waterproofing system chosen
  • Tile selection and the extent of tiling
  • Condition of the subfloor and framing once opened
  • Ventilation upgrades, including ducting to the exterior
  • Whether the room is the only bathroom in the house

Frequently asked questions

Why do bathrooms fail after a remodel?

Almost always waterproofing. Tile and grout are not water barriers, so if the membrane behind them is missing, discontinuous at the drain or not sealed at the corners, water reaches the framing and the failure shows up a year or two later as a stain on the ceiling below.

Can I convert a tub to a walk-in shower?

Usually yes, and it is one of the most common requests. The footprint often allows it, but the drain position may need adjusting and the waterproofing has to be rebuilt for a shower rather than reused from a tub surround.

How long does a bathroom remodel take?

A single bathroom with no layout change typically runs a few weeks. The waterproofing and tile stages set the pace because both need drying time between coats and setting, and rushing them is exactly how bathrooms fail.

Do I need a permit for a bathroom remodel?

Cosmetic updates generally do not. Moving plumbing, adding circuits, changing ventilation or altering the layout generally does. Requirements are set locally and we confirm what applies to your address before starting.

Related services

Custom Home Building across Tampa Bay and Lakeland

In this climate an exhaust fan that genuinely vents outdoors is what stops a remodeled Tampa Bay bathroom from growing mould on the ceiling within a year. We work throughout Tampa, Brandon, Riverview, Valrico, Plant City, Lutz, Land O' Lakes, Wesley Chapel, Odessa, Zephyrhills, Lakeland.

What we see most often in this region

  • Failed shower pans in older homes leaking into the framing below
  • Recirculating exhaust fans that remove no moisture at all
  • Rotted subfloor around toilets from long-term slow leaks
  • Galvanised supply lines reaching the end of life behind the walls
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