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North Dakota · Insulator (Heat & Frost / Asbestos Worker)

North Dakota insulator prevailing wage, county by county

An insulator's Davis-Bacon prevailing wage in North Dakota runs from $18.40 an hour in Grand Forks County to $27.23 in Oliver County. The median county is $18.85.

Insulator (Heat & Frost / Asbestos Worker) rate in each North Dakota county, A to Z

Which kind of construction is the job?

The kind of construction decides the rate. Residential covers homes and apartments up to four stories.

53 counties
CountyBase wageFringe benefitsTotal rateEffectiveSource
Adams CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260018 Mod 2
Barnes CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.68 $2.17 $18.85 May 18, 2026ND20260019 Mod 2
Benson CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Billings CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260020 Mod 3
Bottineau CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260021 Mod 2
Bowman CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Stark County group
$17.39 $2.10 $19.49 May 18, 2026ND20260034 Mod 2
Burke CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · McHenry County group
$17.39 $2.10 $19.49 May 18, 2026ND20260035 Mod 2
Burleigh CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.73 $2.94 $19.67 May 18, 2026ND20260012 Mod 2
Cass CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$15.80 $2.60 $18.40 May 18, 2026ND20260013 Mod 2
Cavalier CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Dickey CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Richland County group
$16.68 $2.17 $18.85 May 18, 2026ND20260036 Mod 2
Divide CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Stark County group
$17.39 $2.10 $19.49 May 18, 2026ND20260034 Mod 2
Dunn CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Stark County group
$17.39 $2.10 $19.49 May 18, 2026ND20260034 Mod 2
Eddy CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Emmons CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Richland County group
$16.68 $2.17 $18.85 May 18, 2026ND20260036 Mod 2
Foster CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Golden Valley CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Stark County group
$17.39 $2.10 $19.49 May 18, 2026ND20260034 Mod 2
Grand Forks CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$15.80 $2.60 $18.40 May 18, 2026ND20260014 Mod 2
Grant CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Richland County group
$16.68 $2.17 $18.85 May 18, 2026ND20260036 Mod 2
Griggs CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Hettinger CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Stark County group
$17.39 $2.10 $19.49 May 18, 2026ND20260034 Mod 2
Kidder CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
LaMoure CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Logan CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
McHenry CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · McHenry County group
$17.39 $2.10 $19.49 May 18, 2026ND20260035 Mod 2
McIntosh CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
McKenzie CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260022 Mod 2
McLean CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260023 Mod 2
Mercer CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260024 Mod 2
Morton CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.73 $2.94 $19.67 May 18, 2026ND20260015 Mod 2
Mountrail CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260025 Mod 2
Nelson CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Oliver CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$21.15 $6.08 $27.23 May 18, 2026ND20260016 Mod 2
Pembina CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.68 $2.17 $18.85 May 18, 2026ND20260026 Mod 2
Pierce CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · McHenry County group
$17.39 $2.10 $19.49 May 18, 2026ND20260035 Mod 2
Ramsey CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.68 $2.17 $18.85 May 18, 2026ND20260027 Mod 2
Ransom CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Richland County group
$16.68 $2.17 $18.85 May 18, 2026ND20260036 Mod 2
Renville CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260028 Mod 2
Richland CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Richland County group
$16.68 $2.17 $18.85 May 18, 2026ND20260036 Mod 2
Rolette CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.68 $2.17 $18.85 May 18, 2026ND20260029 Mod 2
Sargent CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Richland County group
$16.68 $2.17 $18.85 May 18, 2026ND20260036 Mod 2
Sheridan CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · McHenry County group
$17.39 $2.10 $19.49 May 18, 2026ND20260035 Mod 2
Sioux CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.73 $2.94 $19.67 May 18, 2026ND20260017 Mod 2
Slope CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Stark County group
$17.39 $2.10 $19.49 May 18, 2026ND20260034 Mod 2
Stark CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Stark County group
$17.39 $2.10 $19.49 May 18, 2026ND20260034 Mod 2
Steele CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Stutsman CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$16.68 $2.17 $18.85 May 18, 2026ND20260030 Mod 2
Towner CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Traill CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Walsh CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Ward CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260031 Mod 2
Wells CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION) · Walsh County group
$16.68 $2.17 $18.85 May 18, 2026ND20260033 Mod 2
Williams CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)
$17.39 $2.10 $19.49 May 18, 2026ND20260032 Mod 2

Main insulator classification in each county (Insulator - mechanical (duct, pipe & mechanical system insulation)), Davis-Bacon wage determinations on SAM.gov, as of October 25, 2026. A contract keeps the wage determination in its bid documents. Modifications published before bid opening apply to it, though one published less than 10 days before can be left out if the agency finds there isn't time to tell bidders (29 CFR 1.6(c)). Checked October 25, 2026.

Cass County insulator: $18.40 per hourDickey County insulator: $18.85 per hourNelson County insulator: $18.85 per hourRenville County insulator: $19.49 per hourGriggs County insulator: $18.85 per hourSlope County insulator: $19.49 per hourRichland County insulator: $18.85 per hourTowner County insulator: $18.85 per hourRansom County insulator: $18.85 per hourBillings County insulator: $19.49 per hourMcHenry County insulator: $19.49 per hourBottineau County insulator: $19.49 per hourLogan County insulator: $18.85 per hourBarnes County insulator: $18.85 per hourStutsman County insulator: $18.85 per hourCavalier County insulator: $18.85 per hourRolette County insulator: $18.85 per hourHettinger County insulator: $19.49 per hourSteele County insulator: $18.85 per hourLaMoure County insulator: $18.85 per hourOliver County insulator: $27.23 per hourMorton County insulator: $19.67 per hourWalsh County insulator: $18.85 per hourMcLean County insulator: $19.49 per hourWilliams County insulator: $19.49 per hourMercer County insulator: $19.49 per hourSioux County insulator: $19.67 per hourPembina County insulator: $18.85 per hourTraill County insulator: $18.85 per hourRamsey County insulator: $18.85 per hourGrand Forks County insulator: $18.40 per hourMountrail County insulator: $19.49 per hourDivide County insulator: $19.49 per hourGrant County insulator: $18.85 per hourSargent County insulator: $18.85 per hourBowman County insulator: $19.49 per hourGolden Valley County insulator: $19.49 per hourMcIntosh County insulator: $18.85 per hourStark County insulator: $19.49 per hourWard County insulator: $19.49 per hourPierce County insulator: $19.49 per hourSheridan County insulator: $19.49 per hourMcKenzie County insulator: $19.49 per hourAdams County insulator: $19.49 per hourBurke County insulator: $19.49 per hourKidder County insulator: $18.85 per hourEddy County insulator: $18.85 per hourFoster County insulator: $18.85 per hourBenson County insulator: $18.85 per hourEmmons County insulator: $18.85 per hourDunn County insulator: $19.49 per hourWells County insulator: $18.85 per hourBurleigh County insulator: $19.67 per hour
$18$18$18$19$19$27Insulator (Heat & Frost / Asbestos Worker), main rate, base + fringe per hour. Each shade holds about a fifth of the counties.

How much does an insulator make on prevailing wage in North Dakota?

$18.40 to $27.23 an hour depending on the county; the median county pays $18.85. 4 groups of counties with identical rates and 21 with rates of their own, highest main rate first.

  1. Oliver County1 county$27.23
  2. Burleigh County1 county$19.67
  3. Morton County1 county$19.67
  4. Sioux County1 county$19.67
  5. Stark County group7 counties$19.49
  6. McHenry County group4 counties$19.49
  7. Adams County1 county$19.49
  8. Billings County1 county$19.49
  9. Bottineau County1 county$19.49
  10. McKenzie County1 county$19.49
  11. McLean County1 county$19.49
  12. Mercer County1 county$19.49
  13. Mountrail County1 county$19.49
  14. Renville County1 county$19.49
  15. Ward County1 county$19.49
  16. Williams County1 county$19.49
  17. Walsh County group15 counties$18.85
  18. Richland County group6 counties$18.85
  19. Barnes County1 county$18.85
  20. Pembina County1 county$18.85
  21. Ramsey County1 county$18.85
  22. Rolette County1 county$18.85
  23. Stutsman County1 county$18.85
  24. Cass County1 county$18.40
  25. Grand Forks County1 county$18.40
Which counties share a rate
CountiesMain classificationBase wageTotal rate
Oliver CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$21.15 $27.23 
Burleigh CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.73 $19.67 
Morton CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.73 $19.67 
Sioux CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.73 $19.67 
Stark County group, 7 localities: Bowman, Divide, Dunn, Golden Valley, Hettinger, Slope, StarkINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
McHenry County group, 4 localities: Burke, McHenry, Pierce, SheridanINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Adams CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Billings CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Bottineau CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
McKenzie CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
McLean CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Mercer CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Mountrail CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Renville CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Ward CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Williams CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$17.39 $19.49 
Walsh County group, 15 localities: Benson, Cavalier, Eddy, Foster, Griggs, Kidder, LaMoure, Logan, McIntosh, Nelson, Steele, Towner, Traill, Walsh, WellsINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.68 $18.85 
Richland County group, 6 localities: Dickey, Emmons, Grant, Ransom, Richland, SargentINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.68 $18.85 
Barnes CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.68 $18.85 
Pembina CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.68 $18.85 
Ramsey CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.68 $18.85 
Rolette CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.68 $18.85 
Stutsman CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$16.68 $18.85 
Cass CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$15.80 $18.40 
Grand Forks CountyINSULATOR - MECHANICAL (DUCT, PIPE & MECHANICAL SYSTEM INSULATION)$15.80 $18.40 

4 groups of counties with identical DOL rates, and 21 counties with rates of their own.

Questions about North Dakota insulator pay

What is the insulator prevailing wage in Cass County?

$18.40 an hour: a $15.80 base wage plus $2.60 in fringe benefits, under wage determination ND20260013, modification 2. Overtime and every insulator classification in Cass County.

Does insulator prevailing wage include fringe benefits?

Yes. In Cass County the $18.40 total is a $15.80 base wage plus $2.60 in fringe benefits, about 14% of the total. The employer owes the full amount for every hour worked.

Does insulator prevailing wage pay overtime in North Dakota?

Davis-Bacon rates are straight time. On contracts over $100,000, the Contract Work Hours and Safety Standards Act requires 1½ times the basic rate for hours over 40 in a workweek (40 U.S.C. 3702). The fringe is owed for every hour at its straight-time amount.

Do apprentice insulators get this rate?

Davis-Bacon determinations list journeyworker rates. Apprentices in a program registered with DOL or a recognized state agency can be paid the program's percentage of the rate, within its ratio; anyone else gets the full rate (29 CFR 5.5(a)(4)).

Why do some counties have the same insulator rate?

DOL often publishes the same insulator rates for several counties. Across North Dakota, the 53 counties with an insulator rate fall into 25 distinct sets of rates, and 4 of those sets are shared by more than one county; the largest covers 15 counties (the Walsh County group).