Updated 2026-11-10
10 Most Common Fire Sprinkler Deficiencies (and How to Fix Each)
These ten items show up on sprinkler inspection reports more than any others. Most are inexpensive to fix when caught early.
1.Painted sprinkler heads
Often from tenant painting. Painted heads must be replaced with like sprinklers. Protect heads with bags during painting.
2.Corroded or loaded heads
Corrosion, dust, or grease can prevent proper operation. Replace affected heads and address the environment causing it.
3.Storage too close to sprinklers
Storage within the required clearance below deflectors blocks the spray pattern. Lower the storage or relocate it.
4.Missing escutcheons
Escutcheons are part of the listed assembly for many recessed heads. Missing ones should be replaced.
5.Gauges out of date
Gauges must be replaced or recalibrated every five years. Replace any that are damaged or not reading correctly.
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6.Incomplete spare head cabinet
Stock the required number and types of spare sprinklers and the correct wrench for each type in the building.
7.Valves not supervised or secured
Control valves must be supervised in the open position. Repair tamper switches or secure valves as required.
8.FDC caps missing or damaged
Missing caps let debris into the connection. Replace caps and inspect threads and gaskets.
9.Hydraulic placard missing
Hydraulically calculated systems need a legible design placard at the riser. Replace missing or unreadable placards.
10.Pipe hangers and support issues
Loose, missing, or damaged hangers, or pipe used to support other items, need correction to keep the system secure.
Most of these can be corrected in a single service visit. Send your report for a correction quote and get it closed out before your deadline.
General information only. Requirements depend on your building, occupancy, adopted code edition, and local Authority Having Jurisdiction (AHJ). Confirm specifics with your AHJ or a licensed fire protection contractor.