Spray foam roofing in Okotoks is a commercial low-slope system, and the buildings it suits here are the small industrial and retail structures around the town rather than anything large.
Small commercial roofs, and what fits them
The candidates are flat and low-slope roofs on light industrial units, retail blocks and service buildings with an existing roof approaching the end of its life. It is less often the right answer on a residential roof or anything with real pitch, and saying so early saves everybody a site visit. Where it does fit, the fact that the assembly is applied as a liquid means insulation can be added during the roof work without the thickness a board system needs.
Freeze-thaw is the argument in this town
Okotoks cycles between mild and cold repeatedly through the winter rather than settling, and every cycle moves a roof deck. A system assembled from sheets accommodates that movement at its joints, which is where it eventually tires and where water finds a way in. A continuous surface has no joints to work loose, and in a climate that repeats the cycle this often that is the property that matters most.
Ice at the edges, and where it starts
Where heat escapes into a roof assembly, snow melts from underneath and the water runs to the cold overhang past the heated space and refreezes there. That is where ice builds and where water eventually gets back into the building. Insulating the roof properly keeps the deck cold, and a cold deck does not melt the snow sitting on it, which addresses the cause rather than managing the symptom with heat cable.
What the survey has to establish before a price
What is on the roof now, how many layers, the deck type, whether the existing insulation has taken on water, how it drains and the condition of every penetration. That is a look from the roof itself rather than a description over the phone, and it decides between a recover and a full tear-off. Wet insulation cannot be covered over, so finding it early is what keeps an Okotoks quote firm rather than provisional. Owners who wait for a leak usually find the cheaper option has already closed, because a leak means water has been in the assembly for some time.
Spray Foam Roofing Okotoks: Common Questions
Why does a seamless roof suit this town? Because Okotoks cycles repeatedly through the winter and every cycle moves the deck. A continuous surface has no joints for that movement to work loose.
We get ice along the edge every year. What causes it? Heat escaping into the roof assembly melts snow from underneath and it refreezes past the heated space. Insulating properly keeps the deck cold so it stops.
Can it go over the existing roof? Often, provided the deck and existing insulation are dry. That is what the survey establishes, and wet insulation cannot be covered.
Size the assembly with the R-value calculator, then get a free Okotoks quote. More on Spray Foam Roofing Alberta.