Whether spray foam is better than blown-in in a Langley BC home depends entirely on the application zone. For crawlspaces, rim joists, and basement walls in BC's damp climate, closed-cell spray foam is clearly the better choice — fibreglass absorbs moisture in these locations and fails over time. For standard attic floor upgrades where R-60 is the goal, blown-in fibreglass is more cost-effective at $1.50 to $3.00 per square foot versus spray foam's $2.50 to $5.00 per board foot — with no meaningful performance difference when air sealing is properly included. Western Insulation gives honest application-specific advice at westerninsulation.ca/spray-foam-insulation/