135mm Knauf Insulation (Ecose) We must thank your company for the outstanding service. We have been blown away by the level of service received from both teams that were at our factory. The noise levels have dropped substantially this is such a blessing. Oh and the bonus, the ladies hinted at how much warmer it has been since we installed the insulation for sound pollution. Does insulation make the factory cooler in summer as well. Great job in a busy area of our factory.