Attic spray foam insulation in Sherwood Park deals with a roof that does not thaw. There is no chinook here to interrupt the winter, so the deck stays below freezing for months at a stretch, and that changes both what goes wrong in these attics and what fixing them is worth.
A roof that stays frozen from November to March
Where a warm spell arrives every few weeks, an attic gets a reset: whatever moisture accumulated sublimates or drains and the count starts again. Here it does not. Vapour pushed up through an unsealed ceiling arrives at a deck that has been cold since autumn, freezes onto it, and simply stays there, building through the winter. Owners find it in March when it finally lets go, and they report it as a roof leak on a day with no rain. That is frost that has been accumulating for four months.
Alberta's first commuter suburb, and the attics show it
A great deal of this housing went up between the late 1950s and the early 1980s, which is older than most people picture when they think of Sherwood Park. Those attics were built with modest depth, no baffles at the eaves, a hatch that is a plain sheet of plywood, and ceiling penetrations nobody thought about. Many have since been topped up with more loose fill, which raised the number without closing a single hole, and the topping up is frequently why an owner believes the attic is already handled.
Depth without sealing does very little in a long winter
The two are not alternatives and they do not substitute for one another. Insulation slows heat moving through a surface; sealing stops air carrying heat and moisture through gaps. Over a nine-month heating season the air path runs continuously, so it accounts for far more than the depth number suggests, and adding depth on top of an unsealed ceiling buries the problem instead of solving it. The order is sealing first, depth second, and it is not a preference.
The eaves have to keep working afterwards
Sealing the ceiling plane means the attic above it stays cold, which is what it should be, and that depends on air still moving from the eaves to the ridge. On a house of this vintage the eave path is usually blocked, either by insulation pushed into it originally or by the material added during a top-up. Baffles go in as part of the work, and an attic sealed without restoring that intake is a worse attic than the one that was there.
Attic Spray Foam Insulation Sherwood Park: Common Questions
Water came through the ceiling in March with no rain. What is it? Frost that built on the underside of the deck through a winter that never thawed, releasing when it finally warmed.
Ours was topped up ten years ago. Is that enough? Topping up adds depth without closing any holes. If the sealing was never done, it is still to do.
Will sealing the attic stop it breathing? The attic keeps venting eave to ridge. What stops is house air leaking up into it, which is the part causing the frost.
How much does attic spray foam insulation cost in Sherwood Park? Depth without sealing does very little over a winter this long, so the sealing line carries the price. A roof that stays frozen November to March releases everything at once, which is why the ceiling stained in March.
How do I choose an attic spray foam contractor in Sherwood Park? Ask whether a top-up from ten years ago counts as done. If they say yes without going up, they are selling you the same top-up that did not hold.
Size the assembly with the R-value calculator, then get a free Sherwood Park quote. More on Attic Spray Foam Insulation Alberta.