HP, cost & what destroys it — per grade
whole roof| Grade | HP | Expl. resist | Upgrade cost | Rocket | C4 | Satchel | Explosive Ammo |
|---|---|---|---|---|---|---|---|
| Twig | 10 | 0% | 50 Wood | ×1 | ×1 | ×1 | ×2 |
| Wood | 250 | 10% | 200 Wood | ×2 | ×1 | ×4 | ×56 |
| Stone | 500 | 50% | 300 Stones | ×4 | ×2 | ×12 | ×200 |
| Sheet Metal | 1,000 | 50% | 200 Metal Fragments | ×8 | ×4 | ×23 | ×399 |
| Armored | 2,000 | 50% | 25 High Quality Metal | ×15 | ×8 | ×46 | ×798 |
HP, explosion resistance, upgrade cost and the raid counts are set by the construction grade, not the block type — a roof has the same values as any other block of that grade. Raid counts are the whole-block amounts of each explosive needed (fewer = faster); triangle variants take roughly half. All values from the Rust game files.
All building grades