An older mixed-use building in Downtown Las Vegas had recurring pinhole leaks in its domestic water risers and pressure spikes that kept damaging fixtures in the upper suites.
We replaced the main risers with new copper, added isolation valves for each floor and installed a large thermal expansion tank and pressure regulation at the building entry.
Tenants needed water during business hours, and the risers ran through finished ceilings and a busy corridor.
Project facts: Office & Retail in Downtown Las Vegas, NV · System: Copper Risers & Expansion Tank · Completed June 2026. Related service: Commercial Plumbing.
Repeated pinhole leaks
Pressure spikes on upper floors
Occupied office and retail tenants
Risers above finished ceilings
No floor-by-floor shut-offs
Coordinating with property management
We worked floor by floor during evenings so tenants never lost water during the day.
Main risers replaced with Type L copper and properly supported.
Each floor can now be shut off without affecting the rest of the building.
A large expansion tank and regulator stabilize system pressure.
Result: Since the new risers and pressure controls went in, the building has had no further pinhole leaks and fixture failures on the upper floors have stopped. Maintenance staff can now shut off a single floor for work without affecting tenants elsewhere.
Photos from the Downtown Las Vegas job site. Click a photo to enlarge it.
