Attic spray foam insulation in Brooks has a summer case that is genuinely as strong as the winter one. This is a hot, dry, exposed corner of the province with very little shade, and the roof takes everything the sky has to offer for a very long day.
A roof deck that has been in full sun since six in the morning
By mid-afternoon in July an attic here is dramatically hotter than the air outside it, because the deck has been absorbing sun for ten hours and there is nothing above it to intercept any of that. That heat then presses down on the ceiling of every upstairs room, which is why the top floor of a Brooks house is unbearable in the late afternoon while the main floor is merely warm.
Which makes the ceiling plane a cooling surface too
The same sealing and depth that stop warm air escaping in January stop that attic heat pushing into the rooms below in July. It is the same work bought for two different reasons, and in this town the second reason is what people actually notice, because a cold January is expected and an unusable bedroom in August is not.
Ventilation is doing more work here than in most towns
An attic that vents properly moves the hottest air out from under the deck rather than holding it there, and on a roof taking this much sun that matters more than it does further north. Blocked eaves, a top-up that buried the intake, or a fan discharging into the attic instead of outside all undo it. On a Brooks attic those get checked and corrected as part of the job rather than being assumed. It is a small piece of work and it is frequently the difference between an attic that behaves and one that holds its heat all evening.
Sealing first, depth second, in either season
Insulation slows heat moving through a surface; sealing stops air carrying heat and moisture through gaps. Adding depth on top of an unsealed ceiling buries the problem instead of solving it, and that is as true of hot air pushing down as of warm air escaping up. The order does not change with the season and it is not a preference. An owner who has already paid once for a top-up that made little difference has usually paid for depth on an unsealed ceiling.
Attic Spray Foam Insulation Brooks: Common Questions
Why is upstairs unusable on a hot afternoon? That is the attic. The deck has been in sun all day and the heat is pressing down through the ceiling.
Is this a winter product or a summer one? Both, and here the summer half is what people notice. It slows heat whichever direction it is travelling.
Why did blowing in more insulation not fix it? Depth without sealing does far less than expected, and a top-up frequently blocks the eave intake as well.
Size the assembly with the R-value calculator, then get a free Brooks quote. More on Attic Spray Foam Insulation Alberta.