06/23/2026
Hybrid Insulation Complete: Sealing the Envelope in St. Catharines! 🏠❄️
Check out the full update here → https://theinnovativegroup.ca/project_updates/st-catharines-home-addition-fiberglass-insulation-update/
Achieving true climate control in a home addition requires prioritizing the hidden materials behind the walls before jumping into aesthetics. On our Royal Manor addition project, we just locked down the second phase of our high-performance insulation system!
A big shout-out to Justin and Jeff from Boardboss Drywall, who were on-site to finalize our hybrid insulation strategy. Because this bungalow addition combines a tight, low-slope roof line with a vaulted ceiling, we designed a multi-tier envelope setup to maximize efficiency without losing valuable interior height:
🔹 The Hybrid Setup: Following our closed-cell spray foam pass, Justin and Jeff installed two layers of premium R31 Johns Manville fiberglass batt insulation in the upper ceiling cavities, hitting a combined, code-compliant R60 rating.
🔹 Absolute Air Sealing: The crew then applied a traditional 6 mil poly v***r barrier across the ceiling plane. Using heavy-duty acoustic sealant, they meticulously bonded the poly around all perimeter walls and framing intersections, creating a seamless, airtight link with the existing spray foam.
This level of detailed trade coordination provides our clients with absolute project certainty, lower monthly energy costs, and an addition that stays perfectly comfortable during every Ontario season.
With the insulation pass complete, we are headed straight into our municipal inspection review before the Boardboss crew returns to hang drywall! 🔨✨
***rbarrier