Sika Boom® Insulating Expanding Foam

Gun-grade, highly flexible expanding foam providing acoustic and thermal insulation

Sika Boom® Insulating Expanding Foam  is a specially formulated, highly flexible PU foam that absorbs component movement thereby giving an airtight seal to reduce heat loss and improve energy efficiency in buildings. The powerful bond strength and flexibility of Sika Boom® Insulating Expanding Foam gives excellent long term thermal and acoustic insulation by inhibiting cracks from occurring during the expansion and contraction of building materials, such as window frame to wall bonds, giving a hermetically sealed barrier. Designed to be used with a Foam Applicator Gun.

  • Acoustic rated up to 62 dB to EN ISO 717-1.
  • Thermal conductivity λ10 = 0.036 W/(m*K).
  • Certified air permeability: a < 0.1 m3/[(m h (daPa)2/3] to EN 12114:2000.
  • Cell structure - fine.