Which solvent is used to clean up lagging adhesive?

• A. Acetone
• B. Water
• C. Ethanol
• D. MEK

Answer: (D)

Removing lagging adhesive relies on using a solvent that can actually dissolve the adhesive film. Lagging adhesives in insulation work are typically oil- or bitumen-based, so the solvent needs to break down those oily residues. Methyl ethyl ketone has strong solvency for bitumen and hydrocarbon-based resins, so it effectively dissolves the sticky film and lets you wipe it away cleanly. It also has a practical evaporation rate, so cleanup isn’t rushed or prolonged. Water won’t dissolve oily or bituminous materials, and the other solvents shown are either not as effective on heavy bitumen films or don’t balance solvency with workable drying time as well. That’s why this solvent is the best choice for cleaning up lagging adhesive.