diff --git a/mods/lzr_laser/blocks.lua b/mods/lzr_laser/blocks.lua
index 7784175..0a82ee7 100644
--- a/mods/lzr_laser/blocks.lua
+++ b/mods/lzr_laser/blocks.lua
@@ -454,7 +454,7 @@ minetest.register_node("lzr_laser:barricade", {
 	wield_image = "xdecor_baricade.png",
 	tiles = {"blank.png","xdecor_baricade.png"},
 	use_texture_alpha = "clip",
-	groups = { breakable = 1, laser_destroys = 2 },
+	groups = { breakable = 1, flammable = 1, laser_destroys = 2 },
 	sounds = lzr_sounds.node_sound_wood_defaults({
 		dug = {name="lzr_laser_barricade_break", gain=1.0},
 	}),
@@ -490,6 +490,11 @@ minetest.register_node("lzr_laser:barricade_on", {
 	sounds = lzr_sounds.node_sound_wood_defaults({
 		dug = {name="lzr_laser_barricade_break", gain=1.0},
 	}),
+	on_construct = function(pos)
+		minetest.sound_play({name="lzr_laser_quickburn", gain=1.0}, {pos=pos}, true)
+		local timer = minetest.get_node_timer(pos)
+		timer:start(1)
+	end,
 	on_timer = function(pos)
 		-- spawn a few particles for the removed node
 		minetest.add_particlespawner({
@@ -497,12 +502,12 @@ minetest.register_node("lzr_laser:barricade_on", {
 			time = 0.001,
 			minpos = vector.subtract(pos, vector.new(0.5, 0.5, 0.5)),
 			maxpos = vector.add(pos, vector.new(0.5, 0.5, 0.5)),
-			minvel = vector.new(-0.5, -0.5, -0.5),
+			minvel = vector.new(-0.5, -0.2, -0.5),
 			maxvel = vector.new(0.5, 0.2, 0.5),
 			minacc = vector.new(0, -movement_gravity, 0),
 			maxacc = vector.new(0, -movement_gravity, 0),
-			minsize = 0.1,
-			maxsize = 0.5,
+			minsize = 1.5,
+			maxsize = 1.5,
 			node = {name="lzr_laser:barricade"},
 		})
 		-- Play randomly-pitched break sound
@@ -511,6 +516,26 @@ minetest.register_node("lzr_laser:barricade_on", {
 		-- remove node
 		minetest.remove_node(pos)
 		full_update()
+
+		-- propagate to neighbors
+		local posses = {
+			vector.new(-1,0,0),
+			vector.new(1,0,0),
+			vector.new(0,-1,0),
+			vector.new(0,1,0),
+			vector.new(0,0,-1),
+			vector.new(0,0,1),
+		}
+		for p=1, #posses do
+			local ppos = vector.add(pos, posses[p])
+			local node = minetest.get_node(ppos)
+			local def = minetest.registered_nodes[node.name]
+			if def and def._lzr_active then
+				if minetest.get_item_group(node.name, "flammable") > 0 then
+					minetest.set_node(ppos, {name=def._lzr_active})
+				end
+			end
+		end
 	end,
 	drop = "",
 	on_place = element_on_place,
diff --git a/mods/lzr_laser/physics.lua b/mods/lzr_laser/physics.lua
index 35daef2..d6c5eb6 100644
--- a/mods/lzr_laser/physics.lua
+++ b/mods/lzr_laser/physics.lua
@@ -274,9 +274,11 @@ function lzr_laser.full_laser_update(pos1, pos2)
 	vmanip:write_to_map()
 
 	for b=1, #burning_cache do
-		local timer = minetest.get_node_timer(burning_cache[b])
-		minetest.sound_play({name="lzr_laser_quickburn", gain=1.0}, {pos=burning_cache[b]}, true)
-		timer:start(1)
+		local node = minetest.get_node(burning_cache[b])
+		local def = minetest.registered_nodes[node.name]
+		if def and def.on_consruct then
+			def.on_construct(burning_cache[b])
+		end
 	end
 	burning_cache = {}