South Africa’s adoption of SANS 53501-1 (replacing SANS 428) aligns local rules with EN 13501-1 Euroclass, rating insulation from A1 to F with s1–s3 and d0–d2 indicators. This shift adds nuance beyond the old A/B system, vital in homes with limited escape routes. Choosing non-combustible insulation like Isover glasswool (A1 or A2-s1,d0) offers zero fire spread, minimal smoke, and long-term safety. With SANS 53501-1 in place, selecting non-combustible materials is the smartest way to future-proof buildings.
