Choose by the job, then by the package. A foam sealant fills a defined gap or joint. A spray insulation product must be documented for the surface, assembly and thickness you intend to insulate. A can, spray pattern or kit photo alone does not establish that suitability.
Start with the opening or surface
For a narrow crack, look for a product whose permitted gap size and substrates match the opening. For a wall surface or cavity, look for product-specific insulation data and installation instructions. These are different purchasing decisions, even when both products contain polyurethane.
Manufacturer examples show why the distinction matters: Loctite separates gaps, large gaps and window-and-door formulas, while DAP offers a specific one-component wide-spray wall-and-cavity system. These examples describe those manufacturers’ products, not DealMart performance.
What should I compare?
- Intended function: filling a gap, sealing an opening or insulating an assembly.
- Application format: a bead, a wide spray or a two-component dispensing system.
- Supporting information: the exact product’s allowed surfaces, installation limits, yield conditions and thermal data where relevant.
- Order contents: foam quantity, applicator compatibility and replacement accessories.
Can I use ordinary expanding foam around a window?
Check for a formula specifically permitted for the frame and installation. A product marketed for general gaps is not automatically a low-pressure window formula. For example, GREAT STUFF’s Window & Door product identifies low-pressure expansion. Confirm the equivalent requirement in the instructions for the product you actually buy.
Choosing a DealMart pack
DealMart offers 12, 24, 36 and 48-can kits, with 12 cans per case. First confirm the application against the exact product documents, then compare kit quantities. If you need application information, send DealMart your surface, location and intended use.