DOT Code: 863.364-014

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Applies insulating material to exposed surfaces of structures, such as air ducts, hot and cold pipes, storage tanks, and cold storage rooms: Reads blueprints and selects required insulation material (in sheet, tubular, or roll form), such as fiberglass, foam rubber, styrofoam, cork, or urethane, based on material's heat retaining or excluding characteristics. Brushes adhesives on or attaches metal adhesive-backed pins to flat surfaces as necessary to facilitate application of insulation material. Measures and cuts insulation material to specified size and shape for covering flat or round surfaces, using tape measure, knife, or scissors. Fits, wraps, or attaches required insulation material around or to structure, following blueprint specifications. Covers or seals insulation with preformed plastic covers, canvas strips, sealant, or tape to secure insulation to structure, according to type of insulation used and structure covered, using staple gun, trowel, paintbrush, or caulking gun.

Work Process Schedule

A.Applying all types of sectional covering900
B.Making plastic cement fitting; applying canvas800
C.Prefabrication of fittings, flanges, etc.500
D.Applying manufacturing fittings200
E.Vaporsealing of fittings, flanges, etc.400
F.Application of air space wire200
G.Application of wire mesh and cornerbead400
H.Blocking of boilers, tanks, flues, etc.1000
I.Mixing cements300
J.Trowelling of cement400
K.Applying clip type and welding pins200
L.Applying rigid board to duct work, casings, vessels, etc.300
M.Applying flexible insulation600
N.Applying flexible insulation300
P.Insulation valves, and flanges with block300
Q.Fabricating removable insulation for turbines, etc.100
R.Applying aluminum on pipe, fittings, and tanks200
S.Low temperature insulations (foamglass, fiberglass, etc.)300
T.Handling and distribution of materials300
U.Spraying of insulating and protective materials100
(Every 2,000 hours = one year) Total Hours:8000

Related Technical Instruction

The Commonwealth of Massachusetts requires 150 hours each year of related technical instruction which must be mastered by the apprentice in order to successfully complete the program. For further information, please call the Division of Apprentice Training at (617) 626-5409.