I bought a house recently and the wood stove hookup has been capped with a concrete like compound, may just mortar.  I need to remove it so i can hook my wood stove up.  The concrete cap substance isn't terribly think and was told it's just a cap to keep air out, but I've never seen this technique.
What's the best way to remove this material and hook-up my wood stove? Any advice will be greatly appreciated.
	
		
			
		
		
	
				
			What's the best way to remove this material and hook-up my wood stove? Any advice will be greatly appreciated.
 
	 
	 
 
		