Basement walls in Langley BC homes require insulation that provides both thermal resistance and moisture control — and closed-cell spray foam is the most complete solution for this application. It bonds directly to concrete, provides R-20 or above at standard depths, and creates a vapour barrier at the foundation surface that eliminates the condensation gap between the insulation and the cold concrete. For Langley homes with any history of basement moisture — efflorescence, occasional dampness, or musty odour — spray foam is the most reliable and permanently effective insulation solution. Book at westerninsulation.ca/spray-foam-insulation/