How much do insulation workers make in Washington in 2026?

Insulation workers in Washington earn a median $92,120 a year, which works out to $44.29 an hour based on a 2,080-hour work year. That figure sits well above the national median for this trade, reflecting Washington's higher cost of living, its heavy construction activity, and strong industrial demand in sectors like aerospace, food processing, and energy.

The pay range is wide. Workers at the 25th percentile — entry-level hands or those in lower-demand areas of the state — bring in $69,910 a year, or about $33.61 an hour. Workers at the 75th percentile earn $107,700 a year, roughly $51.78 an hour. That $37,790 spread between the bottom and top quartiles tells you there's real room to move up as you build hours, certifications, and specialization.

Where you work in Washington makes a difference. The Seattle-Tacoma-Bellevue metro concentrates the most insulation work in the state. Commercial high-rises, data center builds, hospital expansions, and industrial retrofits in that corridor keep crews busy year-round. Spokane and the Tri-Cities area (Richland, Kennewick, Pasco) also generate steady work, particularly tied to energy facilities and government-adjacent construction. Rural and eastern Washington projects tend to pay on the lower end of the range simply because job density is thinner.

The type of insulation work shapes your paycheck, too. Mechanical insulation — wrapping pipes, tanks, and ductwork in industrial and commercial settings — typically commands higher wages than residential work. Spray foam and firestopping specialists often earn toward the top of the range because the skill set and safety requirements are more demanding. Residential blown-in and batt insulation tends to land closer to the 25th percentile end.

Apprentices entering a formal program will start below the 25th percentile figure. Most apprenticeship scales for insulation workers ramp up in six-month steps tied to hours completed, so wages climb steadily as you log time. No union scale data was available for this trade in Washington at the time of publication, but unionized workers in comparable trades in the state consistently land in the upper half of the pay band, and the same pattern likely applies here.

Overtime and prevailing wage work can push annual earnings above the 75th percentile figure for workers who stay busy on public projects. Washington's prevailing wage law applies to public works contracts, and insulation work on those jobs is subject to wage determinations set by the Washington State Department of Labor & Industries. Workers who regularly land on prevailing wage jobs often report annual earnings that outpace what the BLS survey captures.

Hours also vary by season. Western Washington sees relatively consistent work through the winter because of the mild, wet climate and the dominance of interior commercial work. Eastern Washington can slow down in the coldest months on outdoor or new-construction jobs. Workers who plan their year around that pattern — taking on industrial shutdown work or service calls in slower months — keep their annual totals closer to the median.

Experience, specialty certifications, and the ability to read mechanical drawings all push pay higher. Insulation workers who cross-train in related skills like scaffolding erection, asbestos abatement, or sheet metal jacketing make themselves harder to replace and tend to negotiate better rates. Foremen and working supervisors on larger commercial and industrial jobs in Washington frequently earn above the 75th percentile threshold.

All figures on this page come from the Bureau of Labor Statistics Occupational Employment and Wage Statistics (OEWS) survey, May 2025 release. They represent wages for employees and do not include self-employed contractors, whose rates can vary considerably above or below the figures shown.