Poultry barn spray foam insulation in Morinville is work on a controlled building rather than a sheltered one, and the distinction matters: everything inside is held to a target by equipment, and the envelope decides how much of that equipment's capacity is spent fighting the building.
The shell is a component of the control system
A barn like this is not trying to be comfortable, it is trying to hold a specification, and the control equipment can only hold what the building allows. Where the shell leaks, the system compensates by running harder, and it does so continuously and invisibly. There is no fault code for an envelope, so this shows up as running costs and as conditions drifting at the edges of the building rather than as anything anybody would call a breakdown.
Air that arrives uncontrolled is not ventilation
The whole point of a designed ventilation rate is that the air enters where it was intended to, at a known volume, and mixes before it reaches the stock. Air arriving through a gap at the eave, around a fan housing or along the base of a wall does none of that. It lands where it lands, cold, in one place. Sealing the shell is what gives the control system its authority back, which is why on a Morinville barn the two are specified as one piece of work rather than separately.
Most of these are two barns joined together
An operation that has grown has usually extended the building rather than built a second one, so what looks like one barn is an original section and an addition, put up years apart to different standards, running on one control system and held to one specification. The two halves do not perform alike and the readings taken at one end do not describe the other. Where a Morinville barn has been extended, establishing where the join is and how it was detailed explains more about the building's behaviour than any measurement taken inside it.
The ceiling is the surface, not the roof
Most barns of this type have a flat ceiling with a ventilated space above it rather than an open roof, which means the insulated plane is the ceiling and the space over it is meant to stay cold. That distinction decides where the work goes and it is regularly got wrong. Insulating up at the roof turns a ventilated attic into part of the building without any of the detailing that would require, and it puts warm moist air against a deck that was designed to stay dry because it was designed to stay cold.
Poultry Barn Spray Foam Insulation Morinville: Common Questions
How do you know a barn has an envelope problem when nothing is obviously wrong? There would not be. An envelope problem shows up as running cost rather than as a fault.
Does ventilating to a designed rate still work if the shell leaks? Only if the air enters where it should. Gaps in the shell take that control away.
When can it be done? Between flocks, and the scope gets sized to the window rather than the other way round.
Size the assembly with the R-value calculator, then get a free Morinville quote. More on Poultry Barn Spray Foam Insulation Alberta.