We Do Not Insulate Glazing
Nobody sprays foam on glass or poly. The whole point of the structure is light transmission and foam is opaque. If somebody offers to insulate your growing area with spray foam, that is a reason to stop the conversation.
Roof heat loss on a modern range is handled by energy curtains, and that is the right tool for it.
What Does Get Insulated
Headhouses, grading lines and packing rooms, which are usually heated harder than the range itself and are often barely insulated at all.
Cold storage and shipping areas, where the vapour drive in a Leamington August is severe. For heavier refrigerated or industrial work, see commercial and cold storage insulation.
Boiler rooms and mechanical spaces, and the pipe runs through unheated areas where the heat is not doing anything useful.
North gable ends, which get almost no useful light and lose heat all winter.
Perimeter curtain walls below bench height. Once the curtains are handling the roof, the walls become a disproportionate share of the total loss, and this is usually the shortest payback on the site.
Barns, Shops And Storage
Closed cell foam sprayed to the underside of a steel roof deck stops the condensation drip that ruins stored equipment and feed. On a barn that is often the main reason for doing it rather than the heat saving.
Pole frame shops, machinery storage and workshop conversions all take foam well, and the irregular framing that makes batts awkward is not a problem for it.
For livestock buildings the washdown durability and the fact that foam gives rodents nothing to nest in both matter as much as the R-value.
What A Grower Should Ask For
A scope that separates the work by payback rather than pricing the whole site as one number. We would rather do the perimeter and the packhouse this year and leave the rest than sell you everything at once.
We will also give you a written spec with the product and the installed thickness, which matters if you are putting the work through any kind of efficiency program.