Spray Foam Chemicals — Open-Cell & Closed-Cell Systems

Every job on your schedule falls into one of two chemical categories, and picking the wrong one costs more than a callback — it can mean a failed inspection. Closed-cell spray foam runs roughly 2.0 lb/ft³ density and cures into a rigid, high-R-value structural panel with built-in vapor retarder properties, making it the standard choice for exterior wall assemblies, roofing, rim joists, and any application where an air barrier and structural racking strength both matter. Open-cell foam runs closer to 0.5 lb/ft³, expands far more per set, and delivers excellent sound-deadening and air-sealing performance at a lower installed cost per board foot — the workhorse for interior cavity walls, attics with proper vapor strategy, and sound-control retrofits.

We stock both systems in contractor-grade set quantities so you're not choosing your chemistry based on what happens to be sitting on the shelf. Every set ships with current Safety Data Sheets and lot-traceable documentation for code inspectors and WHMIS compliance records.

Density and yield aren't the only variables worth checking before you bid a job. Closed-cell systems also function as a vapor retarder at roughly 1.5–2 inches of thickness, which changes how you detail wall assemblies compared to open-cell, which typically requires a separate vapor strategy under most Canadian building codes. Open-cell's higher expansion ratio means a single set stretches across dramatically more square footage, which is exactly why it wins on cost-per-board-foot for large interior cavity jobs even though the material itself carries a lower R-value per inch. Matching the right chemistry to the assembly — not just defaulting to whatever you sprayed last week — is where experienced crews separate themselves from callback-prone competitors.

Chemicals ship as matched 55-gallon A-side/B-side sets — two drums per set, pre-paired by lot number so ratio performance is predictable from the first pull of the trigger. Single sets work for one-off jobs, but most active contractor accounts order by the pallet (four sets per pallet) to hit better per-set pricing and reduce the number of deliveries hitting the shop each month.

Volume-tiered contractor pricing kicks in on multi-pallet orders, and repeat accounts can lock in pricing ahead of the spring rush through our seasonal pre-buy program — see the contractor pricing program for tier breakpoints and net-terms eligibility. All chemical orders include current SDS documentation and are shipped in temperature-managed freight during winter months to protect viscosity and cure performance in transit.

If you're new to buying chemicals wholesale, plan your first order around your typical two- to three-week job pipeline rather than stocking a full season up front — that keeps working capital tied up in inventory to a minimum while you get a feel for actual set consumption per job type. Once you have a consistent order cadence, moving to pallet quantities and locking pricing through the pre-buy program is where the real per-set savings show up.