EcoSeal
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RESIDENTIAL

Spray Foam Insulation in Armstrong.

Closed-cell spray polyurethane foam insulation for walls, attics, crawlspaces, and building envelopes.

Book an envelope advisory callCall 250-900-6613
Residential interior with green closed-cell spray foam applied to wall studs and ceiling joists around a window opening.
Credentials
CAN/ULC certified closed-cell spray polyurethane foam
BC Energy Step Code Part 3 expertise
FortisBC Commercial New Construction program experience
CMHC MLI Select financing optimization

Park Edge Vernon: 84-unit MURB, 0.20 L/s/m² blower door — among the best wood-frame MURB results on record in BC. Cascara Salmon Arm: 140 units, Step 3 declared with a 4.8 kWh/m²/yr TEDI margin.

EcoSeal — Building Performance Systems
Capability Brief · Scene 01 / 06 · 2×6 Wall Assembly · BC Step Code 4
Exploded DiagramRev. 04 · MAY 2026
01Wall assembly · Exploded view

2×6 closed-cell SPF wall section.

1.20 m × 2.40 m structural panel. Six layers, separated to show every component of the building envelope EcoSeal delivers under one contract.

#01Fibre cement cladding · 12.7mm panel · greyRainscreen attachment
#02Tyvek housewrap · Air + water barrierLapped + taped
#03OSB structural sheathing · 11mm · APA-ratedContinuous nail base
#05Closed-cell SPF · 3lb · R-19.94 effectiveSprayed in cavity
#042×6 Douglas fir studs16″ on-centre frame
#06Interior drywall12.7 mm · taped + sanded
Wall section1.20 × 2.40 m
Studs2×6 · 16″ OC
R-effectiveR-19.94
Air leakage0.20 L/s/m²
ExteriorInterior
EcoSeal spray foam rig parked in front of a six-storey wood-frame MURB still in Tyvek and Protecto Wrap sheathing.

What we do

Closed-cell spray polyurethane foam insulation for walls, attics, crawlspaces, and building envelopes.

Why this matters for Armstrong

BC Energy Step Code 3 is the minimum on every new Part 3 permit from January 1, 2026. Step 3 maps directly to 50 CMHC MLI Select energy efficiency points via the BC Step Code shortcut. That is the full energy cap. Stack with affordability or accessibility points to reach the 100-point premium discount tier.

How we work with energy modellers

The model is only as good as what the contractor tells the modeller. We send a written spec letter to your energy modeller before the permit model is built so the assembly is in the model, not assumed from the drawings.

Frequently asked questions

What is the BC Step Code shortcut to CMHC MLI Select?
BC Energy Step Code Step 3 maps directly to NECB Level 3 under CMHC MLI Select. That is the maximum 50 energy efficiency points available. Step 4 is the same — 50 points. Combined with affordability or accessibility points, the financing benefit can reach the 100-point premium discount tier.
Why does FortisBC CNC require Step 4 declaration?
The FortisBC Commercial New Construction capital incentive of $2.50 per square foot is paid against a Step 4 declaration on the BC Step Code Appendix B checklist. A Step 3 declaration earns zero from this incentive. Pre-construction enrollment before above-ground construction begins is also required.
Does spray foam alone get a 6-storey wood-frame MURB to Step 4?
No. On a 6-storey wood-frame MURB in CZ5, cavity spray foam alone closes about 1.5 kWh/m²/yr of an 8.8 kWh/m²/yr Step 4 TEDI gap. Reaching Step 4 also requires 2+ inches of exterior continuous insulation and likely an HRV upgrade to 85%+ SRE. On a 4-storey building, 5-inch SPF gives a 5.0 kWh/m²/yr Step 4 margin and Step 4 is achievable.
What is the airtightness target for Step Code MURBs?
There is no standalone numeric airtightness threshold for Step 4. The tested blower door result feeds the as-built energy model. Park Edge Vernon came in at 0.20 L/s/m² facade — among the best wood-frame MURB results on record in BC.
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Tell us about the building.

Real reply from Jacob McCardell. No call centre, no auto-responder. If we are not the right fit, we will tell you who is.