Agricultural spray foam insulation in Drumheller is unusual among Alberta towns because the municipality holds two farming landscapes stacked on top of each other. The town amalgamated with the Municipal District of Badlands in 1998 and now covers roughly 107 square kilometres, taking in the old mining hamlets along the river as well as the farmland on the rim. A yard on the flat prairie above the valley and a yard on the coulee bottom are the same drive apart and nothing alike to insulate.
The tableland above the rim
Up on the flat, buildings sit in dryland grain country with nothing between them and the horizon. There is no shelter belt effect from topography, so the whole structure is in the wind, and wind is what turns a gap into a driven path. The windward wall of a machinery building up there is pressurised for days at a time while the opposite wall sits under suction, which means air crosses the building continuously rather than drifting in and out. Sealing the exposed face and the corners changes more on a rim-top yard than adding depth anywhere in the building.
Down on the valley floor
The bottom is sheltered from wind and penalised in a different way. Cold air is heavier than warm air, so on a still winter night it drains off the tableland, runs down the coulees and settles on the valley floor. A building on the bottom can be meaningfully colder at dawn than a building on the rim a few kilometres away, and the cold sits there until the sun gets over the valley wall. Anything that has to start on a cold morning, or anything that must not freeze, is working against that pool.
Ground that will not hold still
The valley cuts into bentonitic shale and clay. Bentonite swells when it takes on water and shrinks when it dries, which is why differential foundation movement is a familiar problem on buildings in this part of the Red Deer River valley. For farm structures that means posts, piers and slabs are not reliably in the same plane from one year to the next. Insulation detailing has to tolerate that. A rigid board held in place by a bead of sealant will open up when the substrate moves under it; an adhered closed-cell layer moves with the assembly instead of parting from it.
Semi-arid outside, wet inside
This is semi-arid country, and the mistake that follows is assuming dry air outside means no condensation risk inside a farm building. The moisture that matters is generated inside the building. Animals, bedding, a wash bay, grain breathing in storage, a tractor brought in wet with snow. Cold dry weather makes the steel colder, and colder steel condenses that interior moisture more readily, not less. The driest winter weeks are often when the roof drips worst.
What we actually spray on a Drumheller farm
On most yards the money goes into the envelope boundaries rather than the whole building. Closed-cell at around R-6 to R-7 per inch on the underside of steel, which becomes its own vapour retarder at roughly two inches and ends the dew problem by keeping warm air off the cold surface. Open-cell at around R-3.5 per inch where the surface is interior and sound or sheer depth is the goal. We quote the job, schedule it and stand behind it, and we would rather do the right third of a building than a thin layer everywhere. Pricing follows board feet of sprayed area against a target R-value, which is why telling us whether the yard is on the rim or the bottom changes the scope before anyone measures anything.
Agricultural Spray Foam Insulation Drumheller: Common Questions
Does it matter whether our yard is up top or in the valley? It changes the dominant problem. On the rim it is wind driving air through the building. On the bottom it is cold air pooling overnight and sitting there.
The ground has moved under our shed. Does that rule out foam? No, and it is part of the reason to use it. Adhered foam moves with the substrate rather than separating from it the way board-and-sealant details do.
It is dry here. Why does our roof still drip? Because the water comes from inside. Dry cold air makes the cladding colder, and the colder the steel the more readily interior moisture condenses on it.
How much does agricultural spray foam insulation cost in Drumheller? It is priced by board foot of sprayed area against a target R-value, so the scope decides the number. Naming which buildings actually have to be warm, and which only have to stay dry, usually cuts the scope before we quote it.
How do I choose an agricultural spray foam contractor in Drumheller? Ask whether they have looked at the ground conditions and whether they intend to spray the whole building or the part that is failing. A quote that treats a rim-top yard and a valley-bottom yard identically has not looked at either.
Work out the depth with the R-value calculator, then get a free Drumheller quote. More on Agricultural Spray Foam Insulation Alberta province-wide.