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Washington insulation applicator prevailing wage, county by county

An insulation applicator's prevailing wage on Washington public works runs from $65.89 an hour in Whitman County to $87.71 in Chelan County, wages and fringe benefits together. The median county is $87.71.

Main insulation applicator classification in each county (Journey level), L&I period 2026-2, commercial rates. Checked October 24, 2026.

Pierce County insulation applicator: $87.71 per hourAdams County insulation applicator: $65.89 per hourPend Oreille County insulation applicator: $65.89 per hourKing County insulation applicator: $87.71 per hourChelan County insulation applicator: $87.71 per hourKittitas County insulation applicator: $87.71 per hourGarfield County insulation applicator: $65.89 per hourGrant County insulation applicator: $65.89 per hourOkanogan County insulation applicator: $87.71 per hourFranklin County insulation applicator: $65.89 per hourKlickitat County insulation applicator: $74.87 per hourClark County insulation applicator: $74.87 per hourSkagit County insulation applicator: $87.71 per hourWalla Walla County insulation applicator: $65.89 per hourPacific County insulation applicator: $87.71 per hourCowlitz County insulation applicator: $74.87 per hourWahkiakum County insulation applicator: $74.87 per hourLewis County insulation applicator: $87.71 per hourClallam County insulation applicator: $87.71 per hourGrays Harbor County insulation applicator: $87.71 per hourJefferson County insulation applicator: $87.71 per hourLincoln County insulation applicator: $65.89 per hourMason County insulation applicator: $87.71 per hourSan Juan County insulation applicator: $87.71 per hourStevens County insulation applicator: $65.89 per hourWhatcom County insulation applicator: $87.71 per hourDouglas County insulation applicator: $87.71 per hourSnohomish County insulation applicator: $87.71 per hourThurston County insulation applicator: $87.71 per hourColumbia County insulation applicator: $65.89 per hourYakima County insulation applicator: $87.71 per hourBenton County insulation applicator: $65.89 per hourIsland County insulation applicator: $87.71 per hourSpokane County insulation applicator: $65.89 per hourWhitman County insulation applicator: $65.89 per hourFerry County insulation applicator: $65.89 per hourSkamania County insulation applicator: $74.87 per hourAsotin County insulation applicator: $65.89 per hourKitsap County insulation applicator: $87.71 per hour
$65$65$74$87$87$87Insulation Applicator, main rate, total per hour. Each shade holds about a fifth of the counties.

How much does an insulation applicator make on prevailing wage in Washington?

6 groups of counties with identical rates and 18 counties with rates of their own, highest main rate first, each split into wage and fringe benefits on one scale. The table below lists which counties are in each group.

  1. Chelan County group3 counties$87.71
  2. Kitsap County group3 counties$87.71
  3. Pacific County group2 counties$87.71
  4. Pierce County group2 counties$87.71
  5. Clallam County1 county$87.71
  6. Grays Harbor County1 county$87.71
  7. Island County1 county$87.71
  8. King County1 county$87.71
  9. Kittitas County1 county$87.71
  10. Lewis County1 county$87.71
  11. Skagit County1 county$87.71
  12. Snohomish County1 county$87.71
  13. Whatcom County1 county$87.71
  14. Yakima County1 county$87.71
  15. Klickitat County group2 counties$74.87
  16. Clark County1 county$74.87
  17. Cowlitz County1 county$74.87
  18. Wahkiakum County1 county$74.87
  19. Grant County group9 counties$65.89
  20. Asotin County1 county$65.89
  21. Benton County1 county$65.89
  22. Spokane County1 county$65.89
  23. Walla Walla County1 county$65.89
  24. Whitman County1 county$65.89

Which counties pay which rate

CountiesMain classificationTotalBase
Chelan County group, 3 counties: Chelan, Douglas, OkanoganJourney Level$87.71 $66.98 
Kitsap County group, 3 counties: Jefferson, Kitsap, MasonJourney Level$87.71 $66.98 
Pacific County group, 2 counties: Pacific, San JuanJourney Level$87.71 $66.98 
Pierce County group, 2 counties: Pierce, ThurstonJourney Level$87.71 $66.98 
Clallam CountyJourney Level$87.71 $66.98 
Grays Harbor CountyJourney Level$87.71 $66.98 
Island CountyJourney Level$87.71 $66.98 
King CountyJourney Level$87.71 $66.98 
Kittitas CountyJourney Level$87.71 $66.98 
Lewis CountyJourney Level$87.71 $66.98 
Skagit CountyJourney Level$87.71 $66.98 
Snohomish CountyJourney Level$87.71 $66.98 
Whatcom CountyJourney Level$87.71 $66.98 
Yakima CountyJourney Level$87.71 $66.98 
Klickitat County group, 2 counties: Klickitat, SkamaniaJourney Level$74.87 $56.86 
Clark CountyJourney Level$74.87 $56.86 
Cowlitz CountyJourney Level$74.87 $56.86 
Wahkiakum CountyJourney Level$74.87 $56.86 
Grant County group, 9 counties: Adams, Columbia, Ferry, Franklin, Garfield, Grant, Lincoln, Pend Oreille, StevensJourney Level$65.89 $48.11 
Asotin CountyJourney Level$65.89 $48.11 
Benton CountyJourney Level$65.89 $48.11 
Spokane CountyJourney Level$65.89 $48.11 
Walla Walla CountyJourney Level$65.89 $48.11 
Whitman CountyJourney Level$65.89 $48.11 

6 groups of counties with identical L&I rates, and 18 counties with rates of their own.

These are journey-level rates. Registered apprentices are paid L&I's apprentice rate for the trade (RCW 39.12.021), which L&I publishes in its wage lookup.

L&I also sets residential insulation applicator rates for 39 county listings. They apply only to the residential projects defined in WAC 296-127-010(9), and each county page shows them separately.

Questions about Washington insulation applicator pay

What is the insulation applicator prevailing wage in King County?

$87.71 an hour: a $66.98 base wage plus $20.73 in fringe benefits, under L&I period 2026-2. Overtime and every insulation applicator classification in King County.

Does insulation applicator prevailing wage include fringe benefits?

Yes. In King County the $87.71 total is a $66.98 base wage plus $20.73 in fringe benefits, about 24% of the total. The employer owes the full amount for every hour worked.

Do apprentice insulation applicators get this rate?

Registered apprentices get L&I's apprentice rate for the trade (RCW 39.12.021), which L&I publishes in its wage lookup. Anyone else on the job is paid as a journey-level worker.

Why do some counties have the same insulation applicator rate?

L&I often publishes the same insulation applicator rates for several counties. Across Washington, the 39 counties with an insulation applicator rate fall into 24 distinct sets of rates, and 6 of those sets are shared by more than one county; the largest covers 9 counties (the Grant County group).

Which county pays insulation applicators the most in Washington?

Chelan County, at $87.71 an hour for the main classification. The lowest is Whitman County at $65.89, and the median county is $87.71.