Soft side vs hard side in Rust
Every wall has a cheap face. Know which side takes the punishment, which explosives ignore it entirely, and when soft siding turns a 20k-sulfur raid into a 4k one.
Updated 2026-10-11 · counts from the verified RaidCalc dataset · how we verify
Quick answer
The soft side is the smooth, inward-facing side of a wall, and it takes significantly more damage from bullets, blades and fire. Explosive-only charges - C4, rockets, satchels, beancans - damage both sides equally. So soft siding matters most for explosive ammo (modest savings) and melee/fire methods like pickaxes and torches (the difference between impossible and easy).
“Place your walls so the smooth face is facing inwards. The textured side is stronger than the smooth (inner side) of the wall.” - Rust Wiki, Building
The numbers: same wall, two faces
Stone wall (500 HP), priced both ways with the RaidCalc engine:
Strong side (hard)
185 explosive rounds · 10 satchels · 2 C4
Weak side (soft)
173 explosive rounds - 12 fewer, 300 sulfur saved. Satchels and C4: unchanged.
| Method | Target | Strong side | Weak side | Sulfur saved |
|---|---|---|---|---|
| Explosive ammo | Stone wall | 185 | 173 | 300 |
| Explosive ammo | Wood wall | 49 | 44 | 125 |
| Explosive ammo | Armored wall | 799 | 798 | 25 |
| Torch | Wood wall | 962 | 97 | 0 (torch = free) |
| Rockets (explosion) | Stone wall | 4 | 4 | 0 - no side effect |
| C4 (explosion) | Sheet metal wall | 4 | 4 | 0 - no side effect |
Why the two sides exist
Rust models building blocks with a directional “face”: the side the builder could see and smooth is the inside. The game multiplies incoming damage based on which face receives it - full value on the weak face, reduced on the strong face. It’s the anti-“one rocket from outside” mechanic and the reason bases are honeycombed: the more internal layers a raider must soft-side through, the more time they spend exposed.
How raiders actually use it
- Find an internal face. Roof down, twig-ramp to an upper floor, or punch through an adjacent room first - the soft side is wherever the defenders live.
- Pick the tool that respects sides. Explosive ammo for quiet work, jackhammer or pickaxes for pure metal savings, torches for the wood-wall meme (97 hits vs 962).
- Recompute before you commit. Flip the side switch in the raid cost calculator and watch ammo counts drop - the solver ranks both scenarios.
Defending against soft-side raids
- Honeycomb - internal walls force the raider to eat multiple soft sides instead of one.
- Multi TC - deny twig ramps that would otherwise deliver raiders to your roof and upper floors.
- Metal or stone externals - woodexternals are a torch buffet; don’t build them if you can’t watch them.
- Seal roofs - most soft-side raids start from above, not from the door.
Common mistakes
- Placing sheet metal walls crossbars-out. Crossbars belong on the inside - that’s the weak face. The wiki is explicit about this one.
- Assuming rockets care about sides. They don’t. Save the risky soft-side play for ammo and melee.
- Soft-siding through honeycomb one wall at a time. Each layer is another 173 rounds; sometimes one rocket through the strong side of the outer shell is genuinely cheaper.
Sources: Rust Wiki - Building (strong/weak face), Explosive 5.56 Rifle Ammo (strong/weak demolition table), RustClash raid tables (side-split counts). Verified 2026-10-11.
Use the tools at the point of need
Frequently asked questions
What is soft siding in Rust?
Soft siding means attacking the weak face of a building block - the smooth side that normally faces indoors. Every building block has a strong side and a weak side: the weak side takes more damage from bullets, blades and fire, which can cut the cost of ammo- and torch-based raids dramatically.
Which face is the weak side?
The smooth face. When placing walls, the textured side should face outward - the wiki’s building page puts it directly: “the textured side is stronger than the smooth (inner side) of the wall”. Sheet metal is the exception people get wrong: place it so the crossbars face inward - that’s the weaker side.
Does soft siding work with C4 and rockets?
No. Explosion damage is identical from both faces - C4, rockets, satchels and beancans don’t care which side they touch. Soft siding only changes bullet damage (so: explosive 5.56), melee (pickaxes, torches) and fire. That’s why the calculator’s side switch only affects ammo and torch counts.
How much does soft siding actually save?
For explosive ammo it’s roughly 5–15%: a stone wall drops from 185 to 173 rounds (saves 300 sulfur), a wood wall from 49 to 44. For torches it’s ~10× - 97 hits on the weak face of a wood wall versus 962 on the strong face. For pickaxes the soft side is the difference between pickaxing being viable and a joke.
How do I raid a soft side if walls face outward strong?
Get inside something adjacent: twig up to an internal face, go through a roof, or hit an interior wall from a connected room. This is exactly what “soft-side pick” raids are - cheap sulfur, high risk, and the reason defenders seal roofs and build honeycombs.