Staycell One Step - Model 302 & 255 - Intumescent Spray Foam Insulation System (Hybrid System)
The HYBRID System consists of two separate layers of closed-cell foam: Staycell® 302 spray polyurethane foam as the base layer covered with Staycell ONE STEP 255 intumescent spray polyurethane foam as the exposed surface layer. It is used to insulate building components such as roof decks, ceilings, walls, siding, structural steel and tanks to provide an integral air barrier / insulation / vapor retarder for building envelope assemblies.
The system has Class A/Class 1 flame spread and smoke developed ratings and qualifies as an Alternative Thermal Barrier Assembly when installed exposed without thermal barriers, ignition barriers or other fire protective surfaces in accordance with QAI Evaluation Report No. B1020-1, Edition 6.
- Base layer: Staycell 302 Spray Foam Insulation
- Top layer: Staycell ONE STEP 255 Intumescent Spray Foam Insulation