Fixes #4040

code/game/objects/structures/grille.dm

@@ -145,9 +145,9 @@
 					return
 			var/obj/structure/window/WD
 			if(istype(W,/obj/item/stack/sheet/rglass))
-				WD = new/obj/structure/window(loc,1) //reinforced window
+				WD = new/obj/structure/window/reinforced(loc) //reinforced window
 			else
-				WD = new/obj/structure/window(loc,0) //normal window
+				WD = new/obj/structure/window/basic(loc) //normal window
 			WD.dir = dir_to_set
 			WD.ini_dir = dir_to_set
 			WD.anchored = 0
@@ -155,6 +155,7 @@
 			var/obj/item/stack/ST = W
 			ST.use(1)
 			user << "<span class='notice'>You place the [WD] on [src].</span>"
+			WD.update_icon()
 		return
 //window placing end
 

code/game/objects/structures/window.dm

@@ -338,6 +338,7 @@
 	spawn(2)
 		if(!src) return
 		if(!is_fulltile())
+			icon_state = "[basestate]"
 			return
 		var/junction = 0 //will be used to determine from which side the window is connected to other windows
 		if(anchored)