When remodeling a primary bathroom, guest bath, or kitchen in San Ramon, Danville, Dublin, or Pleasanton, the most important work happens behind the walls before a single tile is set. At Prime Time Plumbing, our 5.0-star licensed crew handles both the precision rough-in engineering and the white-glove final fixture installation.
1. Tub-to-Walk-In Shower Conversions: The 2-Inch Drain Upgrade
One of the most common bathroom remodel mistakes occurs when converting an old alcove bathtub into a modern curbless or low-threshold walk-in shower. Standard bathtubs use a 1.5-inch drain pipe, whereas California Plumbing Code requires a minimum 2-inch drain line and P-trap for walk-in showers to handle high-flow rain heads and body sprays without pooling:
- Subfloor & Slab Drain Relocation: We open the subfloor or concrete slab to upsize the trap and branch drain to 2-inch ABS/PVC and center the drain precisely for linear or square tile grates.
- Precision Shower Mixing Valve Depth: Every Kohler, Brizo, Delta, Moen, or Hansgrohe rough-in valve has a strict plaster-guard depth tolerance. We mount and pressure-test your copper shower manifold to match your exact thinset and stone/tile thickness.
- Water Hammer Arrestors & Pipe Anchoring: We secure all hot and cold copper supply lines inside the wall cavity so pipes never rattle when valves close.
Explore our dedicated Bathroom & Kitchen Remodel Plumbing page to see how our licensed technicians handle installations, diagnostics, and municipal permits across San Ramon, Dublin, Pleasanton, and the East Bay.
2. Freestanding Soaking Tubs & Single-to-Double Vanity Conversions
Replacing a built-in deck tub with a sculptural freestanding soaking tub transforms a primary suite, but requires exact drop-in drain and floor-mounted or wall-mounted filler rough-in boxes. Likewise, upgrading a single-sink vanity to a 60- or 72-inch double vanity requires re-piping the in-wall sanitary tees, re-venting, and stubbing out symmetrical copper hot and cold supplies.
3. Don’t Skip Quarter-Turn Angle Stops & Smart Toilet Rough-Ins
Never reconnect brand-new designer faucets or toilets to 20-year-old multi-turn compression shut-off valves. During final trim, we install heavy-duty quarter-turn brass angle stops, braided stainless supply lines, and concealed water connections for modern bidet toilets.
| Remodel Phase | When It Happens | What Prime Time Plumbing Completes |
|---|---|---|
| Phase 1: Rough-In Plumbing | After demolition, before drywall/tile | Drain relocation, 2" shower trap, copper shower valve, tub box & pressure test |
| Phase 2: City Inspection | While walls & trenches are open | Full water/air test verification for municipal building inspector |
| Phase 3: Finish Trim | After tile, paint & countertops are done | Installing freestanding tub, faucets, shower trim, toilets, sinks & leak check |
Frequently Asked Questions
When should I bring Prime Time Plumbing into my bathroom or kitchen remodel?
Ideally before demolition begins—once you have selected your plumbing fixtures (shower valve, tub, sinks, and toilets) so we can verify rough-in specifications and coordinate seamlessly with your tile setter or general contractor.
Can you install plumbing fixtures that I purchased myself?
Yes! We install homeowner-supplied and designer-specified fixtures from all major brands with scratch-free, white-glove care.
Do you also handle urgent everyday plumbing repairs?
Absolutely. Whether you need a leaking pipe repaired, a new main water shut-off valve, or a full custom bath remodel, our team is available 24/7 at (510) 213-8213.
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