Specification History
| SWS Version | Created | Specification ID | Title | Specification | Objective | Supporting Materials | Rationale | Status |
|---|---|---|---|---|---|---|---|---|
| Version 2025 | 23/03/2021 - 11:50 | 4.0401.1f | Ignition and thermal barriers | If foam is no more than 3 1/4" thick, is between 0.5 and 2.0 lb/ft3 in density, and has a flame spread/smoke development index of 25/450 or less when tested in accordance with ASTM E84 or UL 723, no thermal barrier is required If foam is thicker than 3 1/4", does not meet the flame and smoke index, or is not between 0.5 and 2.0 lb/ft3 density, separate foam from the subspace with a suitable thermal barrier covering or coating as indicated in manufacturer's specifications and applicable building code If code requirements are unclear, consult local code officials for clarification |
Minimize ignition and combustion potential |
Send to Tony Link to verify the intent of the committee was met by this suggested change. | Black Line | |
| Version 2025 | 23/03/2021 - 11:50 | 4.0401.1f | Ignition and thermal barriers | If foam is no more than 3 1/4" thick, is between 0.5 and 2.0 lb/ft3 in density, and has a flame spread/smoke development index of 25/450 or less when tested in accordance with ASTM E84 or UL 723, no thermal barrier is required If foam is thicker than 3 1/4", does not meet the flame and smoke index, or is not between 0.5 and 2.0 lb/ft3 density, separate foam from the subspace with a suitable thermal barrier covering or coating as indicated in manufacturer's specifications and applicable building code If code requirements are unclear, consult local code officials for clarification |
Minimize ignition and combustion potential |
Send to Tony Link to verify the intent of the committee was met by this suggested change. | Black Line | |
| Version 2020 | 14/08/2020 - 14:25 | 4.0401.1f | Ignition and thermal barriers | If foam is no more than 3 1/4" thick and the space is not permanently habitable no thermal barrier is required If foam is thicker than 3 1/4", doesn't meet the flame and smoke index, or is of less than 0.5 lb/ft3 density, separate foam from the subspace with a suitable thermal barrier covering or coating as indicated in manufacturer's specifications and applicable building code If code requirements are unclear, consult local code officials for clarification |
Minimize ignition and combustion potential |
Black Line | ||
| Version 2020 | 14/08/2020 - 14:25 | 4.0401.1f | Ignition and thermal barriers | If foam is no more than 3 1/4" thick and the space is not permanently habitable no thermal barrier is required If foam is thicker than 3 1/4", doesn't meet the flame and smoke index, or is of less than 0.5 lb/ft3 density, separate foam from the subspace with a suitable thermal barrier covering or coating as indicated in manufacturer's specifications and applicable building code If code requirements are unclear, consult local code officials for clarification |
Minimize ignition and combustion potential |
Black Line |