Forced air systems and the duct work required to move that air are complex systems. They require a great deal of calculation to size correctly so that they operate properly and efficiently. If a duct run isn't sized correctly you can have a room which doesn't get enou...

For those of you that are building nerds like me, here are a few videos from Building Science Laboratories on... you guessed it building science principles.


From Ice dams, to vapour barrier vs. air barriers, to managing humidty, to insulating in cold climates.



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