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Pierce County · Insulator (Heat & Frost / Asbestos Worker)

Insulator (Heat & Frost / Asbestos Worker) prevailing wage in Pierce County, Washington

$100.83an hour, base wage + fringe benefits

$81.42 base wage + $19.41 fringe benefits

Pierce County uses the same insulator rates as 19 other counties. See all of them on one page.

On Washington public works in Pierce County, an insulator must be paid at least $100.83 an hour in total: $81.42 in wages plus $19.41 in fringe benefits for health, pension, vacation, training and other plans. L&I's rate took effect September 2, 2026.

L&I published this rate on August 3, 2026 and it took effect September 2, 2026. Checked against L&I's wage lookup on October 24, 2026.

Base wage and fringe benefits: $81.42 + $19.41

The wage is the taxable hourly rate. The other lines are what Washington law calls "usual benefits": contributions to health, pension, vacation and holiday, apprenticeship and similar plans. A contractor that doesn't provide a benefit pays its value as wages instead (RCW 39.12.010).

Base wage (taxable)	$81.42
Health and welfare	$9.24
Pension	$5.82
Vacation and holiday	$2.46
Training	$1.50
Other benefits	$0.39
Total straight-time hourly rate	$100.83

Set from: collective bargaining agreement, 2014-2030 Working Conditions Agreement between Western Washington Chapter Western Insulation Contractors Association and Heat and Frost Insulators and Allied Workers Local #7. Where a county has a collective bargaining agreement, L&I adopts its wage and benefits; with more than one, the higher rate prevails. Otherwise L&I uses wage surveys (RCW 39.12.015).

Overtime

L&I overtime code 11C:

Overtime Calculations are based on the hourly rate actually paid to the worker. On public works projects, the hourly rate must be not less than the prevailing rate of wage minus the hourly rate of the cost of fringe benefits actually provided for the worker.

ALL HOURS WORKED IN EXCESS OF EIGHT (8) HOURS PER DAY OR FORTY (40) HOURS PER WEEK SHALL BE PAID AT ONE AND ONE-HALF TIMES THE HOURLY RATE OF WAGE.

The first two (2) hours after eight (8) regular hours Monday through Friday and the first eight (8) hours on Saturday shall be paid at one and one-half times the hourly rate of wage. All other overtime hours worked, except Labor Day, and all hours on Sunday shall be paid at double the hourly rate of wage. All hours worked on Labor Day shall be paid at three times the hourly rate of wage. All non-overtime and non-holiday hours worked between 4:00 pm and 5:00 am, Monday through Friday, shall be paid at a premium rate of 15% over the hourly rate of wage.

Washington has no single overtime rule for prevailing wage. Each rate carries its own L&I code, copied here as published.

Labor cost calculator: a crew's straight-time wage and fringe cost over the job dates.

When does this rate change?

Rates lock at the bid date. A project uses “the rates that are in effect on the date when bids by prime contractors are due”, and they stay for the life of the contract. If the contract isn't awarded within six months of the bid date, the award-date rates apply. Contracts without bids use the date they're signed (WAC 296-127-011).
L&I publishes on the first business day of February and August, and rates take effect 30 days later. Corrections can be published at any time and also take effect 30 days later (WAC 296-127-011(1); L&I publications and corrections). L&I's next set is due February 1, 2027, effective March 3, 2027.
L&I doesn't republish every rate each period. A rate stays until L&I changes it, so each one has its own date. This one was published August 3, 2026 and took effect September 2, 2026.

Davis-Bacon insulator rate in Pierce County

Federally funded or assisted construction here uses the U.S. Department of Labor's wage determinations. When a contract requires both the state rate and the Davis-Bacon rate, paying the higher of the two meets both. The contract documents say which apply.

We don't put a federal figure next to L&I's here, because the two schedules' classifications don't line up one to one. The federal rows for this trade are below; match the classification to the work.

Construction	Federal classification	Base wage	Total rate	WD
Building	HEAT & FROST INSULATOR (INCLUDES DUCT, PIPE AND MECHANICAL SYSTEMS)ASBE0007-007	$75.37	$94.19	WA20260111 Mod 1

Davis-Bacon rates from SAM.gov, read October 25, 2026. Our federal totals are base plus fringe; DOL prints no total. Washington Davis-Bacon changes

Holidays

L&I holiday code 15H:

Holidays: New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Friday after Thanksgiving Day, Christmas Eve Day, and Christmas Day (8). When the following holidays fall on a Saturday (New Year’s Day, Independence Day, and Christmas Day) the preceding Friday will be considered as the holiday; should they fall on a Sunday, the following Monday shall be considered as the holiday.

How Pierce County compares

The main insulator rate in every county that has one, and how the pay splits here and in the nearest counties. All bars use the same scale.

Every county in Washington

Pierce $100.83145

$68.80Adams$100.83Chelan

PierceNearby: Lewis $100.83, Thurston $100.83, Cowlitz $87.79Each column is a group of counties with about the same main rate; its height is how many. 0 counties pay more than Pierce, 19 the same, 19 less.

Base wage and fringe benefits, nearby

Pierce Countybase $81.42$100.83
Lewis Countybase $81.42$100.83
Thurston Countybase $81.42$100.83
Cowlitz Countybase $62.02$87.79

Insulator (Heat & Frost / Asbestos Worker) rates in nearby counties

Current L&I rates. You pay the rate for the county where the work is done. The statute defines “locality” as “the largest city in the county wherein the physical work is being performed”, and L&I publishes rates county by county (RCW 39.12.010).

L&I's insulator rates for Pierce County are the same as in 19 other counties: Chelan, Clallam, Douglas, Grays Harbor, Island, Jefferson, King, Kitsap and 11 more.

County	Classification	Base wage	Total rate	vs Pierce County
Pierce County	Journey Level	$81.42	$100.83
Lewis County	Journey Level	$81.42	$100.83	same
Thurston County	Journey Level	$81.42	$100.83	same
King County	Journey Level	$81.42	$100.83	same
Kitsap County	Journey Level	$81.42	$100.83	same
Mason County	Journey Level	$81.42	$100.83	same
Cowlitz County	Mechanic	$62.02	$87.79	−$13.04

Washington insulator prevailing wage by county, with a map

Are you being paid this rate?

Add your wage to what your employer pays into health, pension and other plans for you, and compare it with $100.83. Each contractor files an L&I-approved Statement of Intent to Pay Prevailing Wages before it's paid, and an Affidavit of Wages Paid when the job is accepted (RCW 39.12.040). On contracts over $10,000 the approved intent and L&I's contact details are posted on the job site (RCW 39.12.020).

Source

Washington State Department of Labor & Industries, prevailing wage lookup, Pierce County, Heat & Frost Insulators And Asbestos Workers (HEAF), L&I wage record 149612, published August 3, 2026, effective September 2, 2026: secure.lni.wa.gov/wagelookup/

Each figure comes from L&I's lookup and is checked against L&I's CSV export and a second, separate query. How we check · Download Pierce County as CSV · Report an error