Spray foam roofing in Morinville comes up almost entirely on the low-slope decks of the multi-bay buildings around the edge of town, and the thing that makes those roofs difficult is not the construction. It is that one deck covers several tenancies and no single occupier decides anything about it.
A leak is reported by whoever is under it, not by whoever caused it
Water entering a low-slope roof at one point can travel along the deck and appear somewhere else entirely, which in a shared building means it appears in a different tenancy. The occupier who reports it is frequently nowhere near the actual failure. That is why patching where the drip shows is the standard response and why it keeps not working, and it is the strongest argument in this building type for treating a roof as one surface rather than as a series of incidents.
Doing part of a shared deck creates a new joint
Where one section is re-covered and the rest is not, the boundary between old and new becomes a detail that has to be made and maintained, and it sits in the middle of a roof rather than at an edge. It will be the first place that fails. Phasing a roof across seasons is sometimes unavoidable on a Morinville building for budget reasons, and where it is, the join is planned at a change of level or a wall rather than wherever the money ran out.
The units below are not all doing the same thing
Under one deck there may be a heated shop, an unheated store and a bay with a booth or a wash running in it. Each of those puts a different amount of moisture and heat against the underside of the same roof, and the deck sees all of it. That is why condensation problems in these buildings cluster over particular units, and why an assessment worth having asks what happens under each part of the roof rather than only looking at the top of it.
What decides whether a covering is the right answer
A sound deck with a drainage layout that works and a build-up that is not already several layers deep is a good candidate, and the seamless finish suits a roof with many small penetrations across it. A deck that has been wet, a structure holding water in a low spot, or a drain that has never worked is not, and going over any of those hides a problem that will surface later under somebody else's unit. That assessment happens before a price on a Morinville building rather than after.
Spray Foam Roofing Morinville: Common Questions
Does a leak showing in one unit mean that is where the water gets in? That is where the water arrives. It is frequently not where it gets in.
Can we do our section only? It creates a joint in the middle of the roof. If it has to be phased, the join is planned.
Is a covering always suitable? No. A wet deck, standing water or a failed drain all have to be dealt with first.
Size the assembly with the R-value calculator, then get a free Morinville quote. More on Spray Foam Roofing Alberta.