Stock Building Supply Merger Creates a $1.5 Billion Company

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After our infrared cameras and blower door test point us toward likely leak zones, we pull out a tried-and-true tool — the smoke pen. By holding it near vents, outlets, or seams, we can watch how the smoke moves. If it drifts or pulls in one direction, we’ve found the leak. It’s a simple but powerful way to confirm what our sensors detect , and it helps ensure every retrofit detail performs exactly as intended. #SmokePen #BuildingScience #EnergyEfficiency #RetrofitInAction #EarthriseInAction #Ea

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