Open-cell spray foam provides meaningful acoustic performance alongside its thermal properties — making it a practical choice for Langley homeowners who want to reduce noise transfer through walls while improving energy efficiency. It fills every gap and void in a wall cavity, absorbing sound waves and eliminating the air pathways through which airborne noise travels. For strata units, secondary suites, and home offices in Langley, open-cell spray foam in shared walls delivers noticeable noise reduction without additional acoustic products. Full guide at westerninsulation.ca/spray-foam-insulation/