Stone Floor / Ceiling

Rust Floor / Ceiling

Horizontal block placed on walls: a ceiling below, a floor above. Square, triangle and frame (hatch-ready) variants.

Floor / Ceiling at every grade

Floor / Ceiling

GradeHPBuild costRocketsC4Cheapest, sulfurDecay h
Twig10
×25
11
×1
50
1
Wood250
×100
21
×1Catapult×1
950
3
Stone500
×150
42
×3Catapult×32
3,500
5
Sheet Metal1,000
×100
84
×7Catapult×15
6,700
8
Armored2,000
×13
158
×14Catapult×30
13,350
12

Triangle Floor

GradeHPBuild costRocketsC4Cheapest, sulfurDecay h
Twig10
×13
11
×1
50
1
Wood250
×50
21
×1Catapult×1
950
3
Stone500
×75
42
×3Catapult×32
3,500
5
Sheet Metal1,000
×50
84
×7Catapult×15
6,700
8
Armored2,000
×7
158
×14Catapult×30
13,350
12

HP and raid cost come from the grade, not the block type. Build cost depends on the shape: triangles cost half a square. Open a grade for its full raid table. Siege weapons such as the Catapult and Ballista can also breach walls.

Hatches & grills that fit the floor frame

5 items, highest HP first.

Other blocks

Every building block

Rust floor / ceiling: common questions

How many rockets does a stone floor / ceiling take?
4 rockets, 2 C4 or 10 satchels. A sheet metal floor / ceiling takes 8 rockets and an armored one 15.
How much HP does a floor / ceiling have in Rust?
Twig 10, Wood 250, Stone 500, Sheet Metal 1,000, Armored 2,000 HP. The grade sets it, not the block type.
How much does it cost to upgrade a floor / ceiling?
Twig 25 Wood, Wood 100 Wood, Stone 150 Stones, Sheet Metal 100 Metal Fragments, Armored 13 High Quality Metal.
What fits in a floor / ceiling?
5 items. The Armored Ladder Hatch tops the list at 1,000 HP.