D
Doggit
Sounds as though the salesman is trying to push work to his installers (as well as keeping you safe of course) and he's right that you don't need a liner, but it'll help the insurance having a liner, as it'll protect the chimney being there. What he should have said, is that burning pine can cause resins to deposit on the liner, far more than burning hard woods, but as long as you get the liner swet regularly, you should be fine.
As Muggles has said, don't burn treated wood, and you shouldn't burn painted wood etc, as you're putting crap into the air. You'll be using paper to get the fire going, and always make sure you use kindling, as it'll get the fire going much quicker; cardboard doesn't seem to burn very well though.
Have you had a chat with the BCO, or put in an application, as you will need this little bit of paper. You can get the liner off of eBay and all sorts of places, so just shop around.
As Muggles has said, don't burn treated wood, and you shouldn't burn painted wood etc, as you're putting crap into the air. You'll be using paper to get the fire going, and always make sure you use kindling, as it'll get the fire going much quicker; cardboard doesn't seem to burn very well though.
Have you had a chat with the BCO, or put in an application, as you will need this little bit of paper. You can get the liner off of eBay and all sorts of places, so just shop around.