Attic spray foam insulation in Lacombe is sealing the ceiling plane before adding any depth. On the older housing here that order is not a preference, it is the difference between work that changes the house and work that changes nothing at all.
A wall cavity that runs from the basement to the attic
A great many of the older houses in this town were balloon framed, which means the wall studs run in one piece from the sill plate at the bottom of the house to the roof, with nothing crossing the cavity at each floor. The wall is a continuous vertical shaft. Warm air enters it low, rises the full height of the building inside the wall, and arrives in the attic at the top plate. Nobody standing in the room can see any of it happening.
Which is why depth alone has never fixed one of these houses
Insulation laid across an attic floor works on heat moving through a material. It does nothing about air arriving at the top of an open wall cavity and pouring into the attic beside it. Add a foot of loose fill over that and the house behaves exactly as before, which is what a great many Lacombe owners have already paid to discover. Closing the top of those cavities is the work. The depth is worth having and it is worth having second.
What that means for the order of the job
The sequence on a house like this is specific. The top plate and the wall cavities are sealed first, then every penetration through the ceiling, then the hatch, and only then is depth added or restored. Done in that order the existing insulation frequently turns out to be adequate. Done in the reverse order the owner pays for material that sits on top of a problem it cannot reach.
Knob and tube, and why it has to be established first
Houses of this vintage sometimes still have original wiring in parts of the attic, and it cannot be buried under insulation. That is a genuine safety matter and it is established before anything is quoted rather than discovered during the work. Where it is present the electrical comes first. It is not a reason to avoid the job and it is a reason nobody should be sprayed over on the same day they were surveyed. Owners are frequently relieved to hear it named rather than discovered, because on a house of this age it is a normal finding rather than a disaster.
Attic Spray Foam Insulation Lacombe: Common Questions
Why did adding insulation change nothing? On a balloon-framed house that is expected. Depth cannot reach air arriving from inside the walls.
What actually gets sealed? The top of the wall cavities and the top plate first, then the ceiling penetrations, then the hatch.
Is it safe if the house still has original wiring? Then that is established before anything is quoted. It cannot be buried and the electrical comes first.
How much does attic spray foam insulation cost in Lacombe? The job is sealing the path from the wall cavities into the attic, and that is what sets the price on an older Lacombe house. Depth alone has never fixed one of these, so a quote built only on square footage is quoting the wrong work.
How do I choose an attic spray foam contractor in Lacombe? Ask whether they have worked on a balloon-framed house and what they do where the wall cavities open into the attic. That answer tells you whether they understand the building.
Size the assembly with the R-value calculator, then get a free Lacombe quote. More on Attic Spray Foam Insulation Alberta.