Spray Foam Insulation Cost Alberta

The unit that matters: the board foot

Installers price in board feet - one square foot covered to one inch of thickness. A 1,000 sq ft attic sprayed to 6 inches isn't 1,000 units of anything; it's 6,000 board feet. Once you think in board feet, the rest of the estimate stops being mysterious:

• Foam type. Closed-cell costs more per board foot than open-cell because it's denser and does more (higher R, vapour barrier, rigidity). Open-cell stretches a budget where its lower R and permeability are acceptable.
• Target R-value -> thickness. Hitting attic R-38 takes roughly 6" of closed-cell or 11" of open-cell. More inches, more board feet, more cost.
• Access and prep. Open new walls are cheap to spray; tight crawlspaces, cut-in retrofits and masking around finished space add labour.

Why we won't post a flat price

A single sticker price would be either useless or misleading, because the same brand of foam lands at a very different total on a walk-out basement versus a vaulted ceiling versus a Quonset. What we can give you is a grounded estimate and then a real number:

1. Run the board-foot calculator - enter area and thickness, get an estimated quantity.
2. Request a quote - we confirm the spec and price on your actual space before any number is binding.

Spray Foam Insulation Cost Alberta: Where The Money Comes Back

Spray foam usually costs more up front than batt or blown-in, and the return is the air-seal: in an Alberta winter, the leaks you close are the bills you stop paying. Closed-cell in a basement or rim joist also controls the condensation that quietly rots and moulds an under-insulated wall - a repair cost that never shows up on the insulation invoice.

Spray Foam Insulation Cost Alberta: Common Questions

What is a board foot, and why does it matter? One square foot covered to one inch of thickness. It matters because it is the unit installers actually price in, so it is the unit you need to think in to read a quote. A 1,000 square foot attic sprayed to six inches is 6,000 board feet, not 1,000 of anything.

Why will you not publish a price per square foot? Because the same foam lands at a very different total on a walk-out basement, a vaulted ceiling and a Quonset. A single sticker price would be either useless or misleading. What you can have is an estimated quantity from the board-foot calculator, and then a real number once someone has been in the building.

Is closed-cell or open-cell cheaper? Open-cell is less per board foot, because it is lighter and does less - lower R-value per inch, and no vapour control. Closed-cell costs more per board foot and does more. The cheaper product is not automatically the cheaper job, because hitting the same R-value takes far more inches of open-cell.

How many inches am I paying for? That comes from your target R-value. Attic R-38 takes roughly six inches of closed-cell or eleven inches of open-cell. More inches means more board feet, which means more cost - which is why "which foam" and "how thick" are the two questions that move a quote most.

What makes one job cost more than another of the same size? Access and prep. Open walls on a new build are quick to spray. Tight crawlspaces, cut-in retrofits, masking around finished space and removing whatever is there now all add labour that has nothing to do with the foam itself.

Where does the money come back? In the air-seal. In an Alberta winter the leaks you close are the bills you stop paying. Closed-cell in a basement or rim joist also controls the condensation that quietly rots an under-insulated wall, which is a repair cost that never appears on the insulation invoice.

See also: closed-cell vs open-cell - attic spray foam - get a free quote.