Spray foam roofing in Sherwood Park is work on the industrial and commercial parks serving the plants to the north and east. These are low-slope roofs on large simple buildings, and what they contend with is not the cycling that dominates a southern roof but a load that arrives in November and does not move until March.
A roof carrying its snow for five months
Without a thaw to clear it, snow that falls in November is still up there in March, with more on top of it. That is a sustained structural load rather than an intermittent one, and it is also an insulating blanket that keeps the top of the assembly at a temperature quite different from the air above it. Anywhere the roof is warmer underneath because of a leak in the ceiling below, that snow melts at the deck and refreezes at the cold edge, which is where the ice at the perimeter of these buildings comes from.
Penetrations are what actually fail on an industrial roof
A building serving process or heavy service work has a great deal going through its roof: exhaust, make-up air, mechanical units, conduit, sometimes piping. Every one of those is a detail, and a membrane roof handles each with a separate flashing that has to be made and maintained individually. That is where these roofs leak, almost without exception. A sprayed roof goes over and around every one of them as a single continuous surface, which is the strongest technical argument for it on this kind of building.
Working over an operation that will not stop
Nearly all of these buildings are running while the roof is being done, and several of them cannot be interrupted at all. That makes sequencing and containment the real constraint rather than the roofing itself, and it has to be planned around the occupant's schedule rather than the crew's. On a Sherwood Park industrial roof it is normal to work in defined sections with the building fully operational underneath.
What the survey has to settle before a price
Nothing gets quoted from the ground. Somebody goes up, opens the assembly and establishes what the existing layers are, whether they are wet, whether the deck is sound and whether a recover is viable or a tear-off is required. Wet insulation left under a new surface stays wet and the new roof fails early, so a core sample is not a formality. That survey is also where the penetration count gets made, and the penetration count is a real part of the cost.
Spray Foam Roofing Sherwood Park: Common Questions
Our leaks are always around the vents and units. Why? Every penetration is a separate detail on a membrane roof. A sprayed roof goes over all of them as one surface.
We get ice building at the roof edge. Is that the roof? Usually it starts below, with warm air leaking into the assembly and melting snow that then refreezes at the cold perimeter.
Can this be done while we are operating? Yes, in defined sections. The sequencing is planned around your schedule, not ours.
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