NFPA 25 Five-Year
Internal Inspections Done Right
Licensed NFPA 25 five-year internal fire sprinkler inspections across South Florida. Obstruction investigations, internal pipe assessments, and full compliance documentation. Serving Miami-Dade, Broward, Palm Beach & Monroe County.
State licensed fire protection contractor • License #FPC25-000017
What Is an NFPA 25 Five-Year Internal Inspection?
The NFPA 25 five-year internal inspection is a required obstruction investigation of your fire sprinkler system's internal pipe condition. It goes beyond the annual visual inspection to evaluate the inside of your pipes for corrosion, biological growth, and obstruction materials that could prevent the system from working in a fire.
Most property managers are aware of annual and quarterly inspection requirements. The five-year internal inspection is less visible but equally required under NFPA 25 for most water-based fire protection systems. Missing it creates a compliance gap and a real safety risk.
As a licensed fire protection company serving South Florida, we perform NFPA 25 five-year internal inspections with full written documentation you can submit directly to your AHJ or insurer. Ready to get yours scheduled?
NFPA 25 requires an internal inspection of wet and dry pipe sprinkler systems every five years to check for obstructions, corrosion, and biological growth inside the pipes. Florida law incorporates these requirements. Skipping the five-year internal inspection is a compliance violation and can affect your insurance coverage.
Get Yours Scheduled →Florida Fire Solutions holds active license #FPC25-000017. Every inspection is performed by a trained technician and documented in a written report that meets AHJ and insurance standards.
What Does the Five-Year Internal Inspection Include?
The NFPA 25 five-year internal inspection goes inside the system to evaluate pipe condition and obstruction risk. It's more involved than an annual inspection and requires specific access points and documentation protocols.
- Internal pipe inspection at system low points and representative locations throughout the system
- Obstruction investigation: identification of scale, corrosion byproducts, biological growth, or foreign materials inside the piping
- Pipe wall condition assessment for signs of microbiologically influenced corrosion (MIC) or internal pitting
- Flushing procedures where obstruction materials are identified, per NFPA 25 Chapter 14 protocols
- Full written documentation of findings, conditions, and any corrective actions for AHJ submission and property records
Results are documented in a written report that meets NFPA 25 obstruction investigation standards. If obstructions or significant corrosion are found, we outline corrective action requirements and can coordinate the follow-up work.
When Is the Five-Year Internal Inspection Required?
NFPA 25 outlines specific triggers for the five-year internal inspection. For most commercial properties, it's a calendar-based requirement. But certain conditions can move up the timeline.
Calendar-Based Requirement
Required for all wet and dry pipe sprinkler systems under NFPA 25, regardless of observed condition
- Five years from the system's original installation or last internal inspection
- Required even if annual inspections show no visible deficiencies
- Applies to wet pipe, dry pipe, and pre-action systems
- Documentation must be on file and available for AHJ review
- Florida Fire Prevention Code incorporates NFPA 25 by reference
Early Inspection Triggers
Certain findings during routine inspections or system events may require an internal inspection before the five-year mark
- Discolored or heavily sediment-laden water during drain tests
- Pinhole leaks or unexplained pressure loss in the system
- Known history of microbiologically influenced corrosion (MIC) in the building
- Recent flooding, contamination event, or major system modification
- AHJ request following an inspection deficiency or incident
Find NFPA 25 Five-Year Internal Inspection Services in Your City
Select your county below, then click your city to view the dedicated five-year internal inspection page for your area.
What Makes Us the Right Five-Year Inspection Company for South Florida?
A lot of companies will send a tech with a clipboard and call it an inspection. We approach it differently. Every visit we make is backed by a licensed fire protection company with real accountability and documentation you can actually use.
Why Five-Year Internal Inspections Matter More in South Florida
South Florida's water quality and climate create internal pipe conditions that make the five-year inspection especially important.
The combination of hard municipal water, high humidity, and salt air in coastal areas of Miami-Dade and Monroe County creates accelerated conditions for microbiologically influenced corrosion inside sprinkler piping. MIC is one of the most common findings we document during five-year internal inspections in South Florida and, left unchecked, it can cause pinhole leaks and pipe failures that no annual inspection would catch.
In Broward and Palm Beach County, high-density commercial buildings with aging systems are frequently overdue for their internal inspection. Many property managers simply don't know the five-year requirement exists until it surfaces during an AHJ review or property transaction due diligence.
If you're searching for an NFPA 25 five-year internal inspection company near me and your property is anywhere across the four counties we serve, the city-specific pages above will show you exactly what we cover and how to schedule.
Frequently Asked Questions About NFPA 25 Five-Year Internal Inspections
The technician opens access points at system low points and representative locations to visually inspect the interior of the piping. They're looking for corrosion products, biological growth, scale, sediment, and any materials that could obstruct water flow. Pipe wall condition is assessed. If obstruction material is found, flushing procedures are performed per NFPA 25 Chapter 14. Everything is documented in a written report.
The annual inspection is primarily visual and external. Technicians check heads, valves, gauges, alarm devices, and pipe hangers from the outside. The five-year internal inspection goes inside the piping to assess pipe wall condition and obstruction material. It's a more specialized assessment that requires opening the system and is documented separately from annual inspection records.
Most commercial properties with water-based fire sprinkler systems do, yes. NFPA 25 requires the obstruction investigation for wet pipe and dry pipe systems. Florida adopts NFPA 25 by reference in the Florida Fire Prevention Code, so the requirement applies statewide. Your specific AHJ may have additional guidance. If you're unsure whether your system qualifies, we can confirm during a consultation.
If obstruction material is found, NFPA 25 requires that the entire system be inspected and flushed to remove the obstruction. We document what was found, the extent of affected piping, and the corrective actions taken. You'll receive a complete written record for your AHJ and insurer. We can coordinate the flushing work directly so you're not managing a second contractor to close out the finding.
It depends on the size and complexity of the system. A smaller commercial property with a straightforward wet pipe system may take two to four hours. A larger multi-story building with multiple risers and zones can take a full day. If flushing is required due to obstruction findings, additional time should be budgeted. We'll give you a realistic time estimate when you call to schedule.
Start by calling us. If you've recently taken over a property, purchased a building, or simply lost track of your inspection history, we can do a baseline inspection and get you a current, compliant report. From there we'll set up a recurring schedule so you never have a gap in your inspection record again. Select your city above to get started.
Ready to Schedule Your NFPA 25 Five-Year Internal Inspection?
Find your city above and visit the dedicated five-year inspection page for your area, or reach out directly. We'll confirm your system type, your compliance timeline, and get you on the calendar fast. No runaround, no overselling.