Bathroom Flooring

Why bathroom floors give out before the rest of the room

Water does it, slowly. A toilet wax ring that has been seeping for years, a tub edge where the caulk failed, a shower door that drips every time it opens. The water gets under the floor covering and into the wood below it, and the floor goes soft long before anyone sees a stain.

Movement does the rest. Tile set on a subfloor that flexes will crack along the same lines over and over, and once grout cracks, more water gets in. In older Massachusetts houses there may be several floors stacked on top of each other: plank subfloor, an old layer of sheet vinyl, underlayment, then the tile someone added in the eighties. Each layer raises the floor and hides what is under it.

So when a homeowner calls about a cracked tile or a spongy spot in front of the toilet, the floor surface is the symptom. The real question is what the wood underneath looks like.

Older houses add their own trouble. A cast iron tub sitting on a framed floor for eighty years can leave the joists under it sagging, and plumbing changes over the decades may have notched or cut joists in ways that weakened them. We look from below wherever we can get access before the old floor comes up.

Taking the old floor up and repairing what is under it

The toilet comes out first, and the vanity or pedestal sink when the floor needs to run under it. Old sheet vinyl and the small square tiles common in mid-century bathrooms, along with the mastic under them, can contain asbestos. That material gets tested before anyone pulls it, and if the test is positive it is handled under the proper procedures rather than torn up with a flat bar.

Once we are down to the subfloor, rotted sections get cut back to sound wood and replaced. If a joist has been weakened by years of leaking, we sister new lumber alongside it. Floors in old houses are rarely level, so we decide with you whether to flatten the floor fully or keep the slope consistent with the hallway it meets.

Every repair beyond the written scope gets photographed and approved in writing before we do it. You will not find out about rot on the invoice.

We keep the existing toilet and vanity if you want to reuse them, and store them out of the way while the floor is open. If you are planning to replace either one, now is the time, since the new floor can be set to the new fixture and nothing has to be worked around later.

You get care instructions for the grout and tile, and we make sure nothing about the room is left half done.

Heated floors and what goes on top

Bare tile on a January morning in New England is cold. An electric radiant mat set in thinset under the tile fixes that, with a thermostat on the wall. It needs its own circuit run by a licensed electrician, and we test the mat before tile goes over it and again after, because a damaged wire is far easier to fix before it is buried.

Porcelain tile is still the most dependable bathroom floor. Small tiles give better grip and handle a floor that is not perfectly flat; large tiles have fewer grout lines but need a flatter base. On wood subfloors we often add an uncoupling membrane under the tile so the framing can move without cracking it. Luxury vinyl plank is warmer and quicker, but water that gets past its seams at a tub or toilet sits on the subfloor with nowhere to go.

Natural stone floors are another option for a bathroom that is not soaked every day. They feel solid underfoot and work well with radiant heat, but they need sealing and some stones mark easily. We help you match the floor to how the bathroom is actually used, whether it is a busy family bath or a quiet powder room.

Whatever goes down, we bring samples into the room so you see them in your own light, next to the tub and vanity that are staying.

Thresholds, door clearance and the toilet flange

A new floor is often a different height than the old one. Where the bathroom meets the hallway, we plan a threshold that steps down cleanly instead of leaving a trip edge, and we undercut the door so it still swings and closes.

The toilet flange has to finish at the right height relative to the new floor, or the toilet will rock or leak at the seal. If it sits too low, a licensed plumber raises it properly rather than stacking wax rings. Where the floor meets the tub, we leave a joint and seal it with flexible caulk, because a rigid grout joint there will crack.

Baseboard goes back on, painted or replaced to suit the room, and the toilet gets reset on a new seal and checked for leaks before we leave.

Heating registers and toe-kick heaters set into the old floor also need attention. A register sitting low in a raised floor looks wrong and catches dirt, so we extend the boot or fit a proper trim ring. Where old cast iron radiators sit on the floor, the plumber may need to lift and reset them, and we plan that into the schedule rather than tiling around them.

Keeping the household running during the job

If this is the only bathroom in the house, the toilet being out is a real problem, and we plan around it. We tell you exactly which days the toilet will be off its flange and reset it as soon as the floor allows, even if trim work continues after.

Dust is kept in the bathroom with plastic at the door, the hallway floor gets covered, and debris goes out at the end of each day. You get regular updates on what is done and what is next. Steve built the company on keeping homeowners informed, and a bathroom floor is no exception.

Before we leave, you get a walkthrough of the finished floor: the threshold, the door, the toilet seal, and the thermostat if there is heat. You get care instructions for the grout and tile, and we make sure nothing about the room is left half done.

See the rest of our bathrooms work, or browse the gallery for rooms we have finished.