Attic spray foam insulation in Blackfalds is sealing the ceiling plane rather than adding depth, and on a stock this young that distinction is the entire subject. These attics are not under-insulated. They are unsealed.
The code asked for a number, not a seal
A house built in the last twenty years has a specified depth of insulation in the attic and it is almost certainly there, because it is measurable and it gets inspected. Air sealing the ceiling plane was not specified in the same way and it does not get measured, so on a great many houses it was simply not done. The result is a Blackfalds attic with plenty of material in it and a ceiling underneath that leaks, which is why depth is not the thing to buy.
The holes that arrive after the builder leaves
The ceiling is not the same on the day of possession as it is five years later. A bathroom fan gets added, a light fitting is changed, somebody runs a cable, a hatch gets opened and never sits right again, and each of those is a small permanent opening into the attic. None of it is anybody's fault and all of it accumulates. Those penetrations are exactly where foam does what loose fill cannot, which is seal an irregular hole in one pass.
Whether this is a builder item or an owner item
It is worth separating before spending. Insulation that is visibly short of the specified depth, a vent that terminates in the attic instead of outside, or a bathroom fan discharging under the roof are things to raise with the builder rather than absorb. General air leakage through the ceiling plane is not a defect, it is the standard of the day, and it is the owner's to improve. Knowing which of those you have is worth a look in the attic before any quote.
The eave baffles, and whether they were ever fitted
Sealing the ceiling only works if the attic above stays cold and properly ventilated, and that depends on the intake at the eave staying clear. On a newer house the usual finding is not blockage from age, it is that loose fill was blown in hard against the eave and the baffles were either omitted or crushed. It is a small correction, it is not optional, and a well-sealed ceiling under a blocked eave performs worse than the attic did before anybody touched it.
Attic Spray Foam Insulation Blackfalds: Common Questions
Why is the house still draughty when the attic has plenty of insulation? That is the normal finding here. Depth was specified and sealing was not.
Is any of this the builder's to fix? Some of it. Short depth or a fan venting into the attic, yes. General leakage, no.
Do we need more insulation on top? Usually not until the ceiling is sealed. After that the depth already there frequently does the job.
How much does attic spray foam insulation cost in Blackfalds? Two lines, not one: sealing the ceiling plane, then depth on top of it. Around Blackfalds the houses met a depth number when they were built and the sealing was never part of it, so the sealing line is usually the one that changes how the house feels.
How do I choose an attic spray foam contractor in Blackfalds? Ask what they intend to SEAL, not just how deep they will blow. If the answer is only a depth figure, they are quoting the part that was already done when the house was built.
Size the assembly with the R-value calculator, then get a free Blackfalds quote. More on Attic Spray Foam Insulation Alberta.