I’m in the process of fitting some cloud 9 11mm underlay in a couple of rooms and I’m struggling to get a neat cut my Stanley knife even with a brand new branded blade doesn’t want to cut it.  Am I missing a trick is there a better tool or blade for this? I’ve never had a problem in the past but have only fitted thinner rubber backed stuff!
	
		
			
		
		
	
				
			 
	 
  
 
		 
 
		 
 
		 
 
		