Cities We Serve
Austin Area:
San Antonio Area:
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Small Room, a Lot of Plumbing
A bathroom packs a sink, a toilet and a tub or shower into a few feet of wall, and most of the plumbing is behind tile or under a vanity where you cannot see it. So the first sign of trouble is often indirect: a soft spot in the floor, a stain on the ceiling below, a musty smell, a water bill that crept up. Radiant’s licensed plumbers trace those signs back to the actual failure and fix it, in Austin, San Antonio and across Central Texas.
Two things wear bathrooms out faster here than in most of the country. Hard water scales up cartridges, aerators, fill valves and shower heads, so fixtures that should last a decade start dripping in a few years. And in slab-built homes, the drain lines run under the concrete; a leak there shows up as a warm spot on the floor or a bill that will not come down. We check the things you can see, and we know when what you are describing points to a leak under the slab instead of a loose trap.
Pricing is upfront and in writing, honored for 72 hours, with no surprise fees on weekends or holidays. Care Club members get an annual whole-home plumbing safety inspection that catches most of this before it becomes a repair.
What to Watch For
Bathrooms rarely fail all at once. These are the early warnings we see most in Central Texas homes.
Air being pulled through the trap, which means a vent is blocked or a drain downstream is partly clogged. It gets worse, not better.
Could be a toilet wax ring, a tub drain shoe, a shower pan or a supply line. Each one is a different repair; we isolate it before cutting drywall.
Old multi-turn stops seize up with scale. If you cannot shut the water off at the fixture, a small leak becomes a big one. We swap them for quarter-turn valves.
The trap in a guest bath dries out in our heat and lets sewer gas through. Running water fixes it for a while; a trap primer or a cracked line needs a plumber.
A long run from the heater, a failed recirculation pump or a crossover in a single-handle valve sending cold into the hot line.
Water has been getting under the flooring for a while. This one should not wait; subfloor repair costs far more than the leak did.
What We Handle
Repairs on what you have, replacements when it is time, and rough-in work for the bathroom you are planning.
How It Works
We diagnose before we quote, and we quote before we work.
A drip, a smell, a stain, a slow drain, a remodel plan. If water is actively running where it should not be, we will walk you to the shutoff on the phone.
Each fixture is tested separately so a ceiling stain gets traced to the toilet, the tub or the supply line, not guessed at.
Repair and replacement options, each priced. You choose; the quote is honored for 72 hours.
Every connection we touched is run and checked for drips, and the bathroom is left the way we found it, minus the problem.
Save on the work your home needs most.
Licensed plumbers on call 24/7 across Austin and San Antonio, with no surprise fees after hours.
Don't just take our word for it — hear from our satisfied customers
Maintenance Membership
Home maintenance for $9.99 a month.
Care Club members get two HVAC tune-ups and a plumbing safety inspection every year, priority scheduling, no dispatch fees — ever — and 5% off every repair.
Supply leaks are constant: the pipe is under pressure whether or not you are using the fixture, so the drip never stops and the water meter keeps moving with everything off. Drain leaks only happen when water goes down, so the spot dries out between uses. A quick test: dry the area, leave the fixture alone for a few hours and check. Wet again means supply. Dry until you run the sink or flush means drain. Toilet seal leaks are a third kind; they show up after flushes, at the base or on the ceiling below. Our plumbers run these same tests on arrival, which is how we keep drywall and tile openings to a minimum.
Yes. Adding a bathroom or moving a toilet, shower or sink means new supply, drain and vent lines run to code, and in Central Texas that usually means working in or under a concrete slab. We look at where the existing drain and vent stack are, tell you which layouts are straightforward and which mean cutting concrete, and coordinate the rough-in with your contractor so inspections happen before the walls close. Casitas and garage conversions are common projects for us in both Austin and San Antonio. Quotes are written and honored for 72 hours, and financing is available on larger jobs.
The smell usually comes from biofilm on the pop-up stopper and the inside of the tailpiece, a slimy mix of hair, soap and toothpaste that bacteria feed on. Pulling the stopper and cleaning it often solves it. If the smell is more like sewer gas, the trap may have lost its water seal, either because the sink is rarely used and the water evaporated in our heat, or because a blocked vent is siphoning it out. A dry trap refills when you run the tap; a siphoning trap keeps coming back and needs the vent checked. If the odor is in more than one fixture, that points to a drain line problem, and we would look at the whole drain system.
Usually. If the rest of the house is fine and only one sink is weak, the problem is local: a scaled aerator, a cartridge packed with mineral grit, a supply line kinked behind the vanity or a shutoff stop that is not fully open. We clean or replace the aerator and cartridge first, which fixes most cases. If the faucet is old enough that the cartridge is no longer made, replacing the faucet can be the cheaper path, and we will tell you that rather than hunting for parts. If the whole house is weak, that is a different problem, often a failing pressure reducing valve, and we treat it as one.