Material surface properties
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This is the list of physical surface types that Source recognises, as defined by the files referenced in /scripts/surfaceproperties_manifest.txt.
Surface types define the physical properties of an object including friction and density, collision/footstep sounds, the effect of bullet impacts and, if the object is destructible, health and gib type.
Both materials and models define their surfaces with the $surfaceprop command.
Note:For 
GoldSrc, use sounds/materials.txt. This file usually has documentation at the top dictating which surface types are available in the given mod.Types
Special |
Description |
|---|---|
| Blockbullets | (in  ) Blocks bullets entirely, because the Tools/ToolsBlockBullets doesn't really block bullets
|
| Default | |
| Default_silent | For invisible collision materials, like sky. |
| Floatingstandable | This one is used for puzzles where we want something that floats but the player can stand on without it sinking beneath the water. |
| Item | Small med kit, smaller tech items, battery. |
| Ladder | Ladder is a fake material for walking on ladders. |
| No_decal | |
| Player | Special materials for player controller. |
| Player_control_clip | Special materials for player controller. |
| Bat Blade Chainsaw Cricketbat Crowbar Fireaxe Fryingpan Golfclub Guitar Pitchfork Shovel Sword |
(in  ) Like "Weapon" but used for the melee weapons to give specific sounds when they are dropped.
|
Concrete/Rock |
Description |
| Baserock | missing? |
| Boulder | Will cause material glitches if used in models |
| Brick | |
| Concrete | |
| Concrete_block | 9x12 prefabricated concrete cinder blocks. |
| Gravel | |
| Rock | Solid rock (small sounds). |
| Sheetrock | (in )
|
| Cavern_rock | (in  )
|
Metal |
Description |
| Canister | Large oxygen tank, propane tank, welding tank. |
| Chain | Metal chain. |
| Chainlink | Chainlink fencing material. |
| Combine_metal | |
| Crowbar | |
| Floating_metal_barrel | |
| Grenade | Solid hand grenade. |
| Gunship | |
| Metal | |
| Metal_barrel metal_sand_barrel (in )
|
Larger metal barrel, metal oil drum. |
| Metal_bouncy | |
| Metal_Box | Smaller metal box (< 2' width/height/depth) |
| Metal_seafloorcar | |
| Metalgrate | Metal grating, used for decking |
| Metalpanel | Thick solid steel panel - used for solid wall, floor, machine construction. |
| Metalvent | ~1mm thick metal |
| Metalvehicle | |
| Paintcan | Smaller metal can |
| Popcan | Small aluminum can, full. |
| Roller | Roller NPC |
| Slipperymetal | |
| Solidmetal | Note:Almost nothing is solid metal - so metal is sheet metal |
| Strider | |
| Weapon | Sounds for when weapons drop. |
| Strongman_bell | (in ) Sounds like a boxing ring bell when hit.
|
| Slipperyslide | (in ) Like SlipperyMetal, but uses SolidMetal sounds.
|
| Metal_shield | (in ) Uses weapon sounds.
|
Wood |
Description |
| Wood | Generic wood Note:materials should use wood_box, wood_crate, wood_plank, wood_panel etc. |
| Wood_Box | |
| Wood_Crate | Large crate, large wood furniture (bookcases, tables).(in all games since  )(also in   )
|
| Wood_Dense | (in )
|
| Wood_Furniture | small wood furniture - chairs, small tables. |
| Wood_LowDensity | Small crate.(in all games since ) (also in ) (also in )
|
| Wood_Plank | Wood board, floorboard, plank. |
| Wood_Panel | Plywood panel, wood door panel. |
| Wood_Solid | Solid 6x6 or greater block, post or tree. |
| Woodladder | (in ) A ladder that makes wood sounds when climbing.
|
Terrain |
Description |
| Dirt | |
| Grass | |
| Gravel | |
| Mud | |
| Quicksand | |
| Sand | |
| Slipperyslime | |
| Antlionsand | |
| Sugarcane | (in )
|
Liquid |
Description |
| Slime | |
| Water | |
| Wade | Wade is a water material for walking in/on water at knee height. |
| Puddle | |
| Wet | (in ) Doesn't actually do anything.
|
Frozen |
Description |
| Ice | |
| Snow | |
Organic |
Description |
| Alienflesh | |
| Antlion | |
| Antlion_eggshell | (in )
|
| Armorflesh | Flesh for physics, metal for bullet fx. |
| Bloodyflesh | |
| Flesh | Medium-sized body. |
| Foliage | |
| Foliage_leaf | (in )Same as Foliage, but uses Foliage sounds, instead of Dirt sounds.
|
| Hunter | (in )
|
| Watermelon | |
| Zombieflesh | |
Manufactured |
Description |
| Advisor_shield | (in )
|
| Asphalt | missing? |
| Glass | Pane of glass, computer screen, window, glass door... |
| Glassbottle | Glass soda bottle, cup, plate, jar... |
| Glassfloor | (in )Like Glass, but with a normal friction value.
|
| Combine_glass | |
| Tile | |
| Paper | |
| Papercup | |
| Cardboard | |
| Plaster | Drywall, office wall material, sheetrock. |
| Plastic_barrel | Larger plastic barrel, hollow, soft plastic. |
| Plastic_barrel_buoyant | |
| Plastic_Box | Small - Medium plastic box, hard plastic. |
| Plastic | Smaller generic hard plastic. |
| Rubber | Solid rubber floor mat, solid rubber tire. |
| Rubbertire | Hollow rubber tire |
| Slidingrubbertire | |
| Slidingrubbertire_front | |
| Slidingrubbertire_rear | |
| Jeeptire | |
| Brakingrubbertire | |
| Jalopy | (in )
|
| Jalopytire | (in )
|
| Slidingrubbertire_jalopyfront | (in )
|
| Slidingrubbertire_jalopyrear | (in )
|
| Clay | (in ) Ceramic jug, mug.
|
| Porcelain | Tubs, urinals, sinks |
| Upholstery | |
Miscellaneous |
Description |
| Carpet | |
| Ceiling_tile | Acoustic ceiling tiles, sound baffles, crumbly plaster. |
| Computer | Computer case, tech equipment case. |
| Pottery |