diff --git a/core/src/mindustry/world/Build.java b/core/src/mindustry/world/Build.java
index 42c37c3bcf..5ae2afb151 100644
--- a/core/src/mindustry/world/Build.java
+++ b/core/src/mindustry/world/Build.java
@@ -195,7 +195,7 @@ public class Build{
             return false;
         }
 
-        if(!type.requiresWater && !contactsShallows(tile.x, tile.y, type) && !type.placeableLiquid){
+        if(!type.requiresWater && !type.isFloor() && !contactsShallows(tile.x, tile.y, type) && !type.placeableLiquid){
             return false;
         }
 
@@ -223,7 +223,7 @@ public class Build{
                 (check.floor().isDeep() && !type.floating && !type.requiresWater && !type.placeableLiquid) || //deep water
                 (type == check.block() && check.build != null && rotation == check.build.rotation && type.rotate && !((type == check.block && check.team() == Team.derelict))) || //same block, same rotation
                 !check.interactable(team) || //cannot interact
-                !check.floor().placeableOn || //solid wall
+                (!check.floor().placeableOn && !type.isFloor()) || //solid floor
                 (!checkVisible && !check.block().alwaysReplace) || //replacing a block that should be replaced (e.g. payload placement)
                     !(((type.canReplace(check.block()) || (type == check.block && state.rules.derelictRepair && check.team() == Team.derelict)) || //can replace type OR can replace derelict block of same type
                         (check.build instanceof ConstructBuild build && build.current == type && check.centerX() == tile.x && check.centerY() == tile.y)) && //same type in construction
diff --git a/core/src/mindustry/world/blocks/environment/Floor.java b/core/src/mindustry/world/blocks/environment/Floor.java
index dc056da237..26631119e8 100644
--- a/core/src/mindustry/world/blocks/environment/Floor.java
+++ b/core/src/mindustry/world/blocks/environment/Floor.java
@@ -83,13 +83,13 @@ public class Floor extends Block{
     protected TextureRegion edgeRegion;
 
     public Floor(String name){
-        super(name);
-        variants = 3;
+        this(name, 3);
     }
 
     public Floor(String name, int variants){
         super(name);
         this.variants = variants;
+        placeableLiquid = true;
     }
 
     @Override