i want to put a woodstove in my metal pole garage and i was told it would be like 800.00 just from the finished ceiling to the outside that was a box for in the roof trusses insulated pipe flashing for the roof some storm collars a cap and some other misc pieces i think that price is crazy can i do this cheaper i put a ss liner in my house chimney and it was cheaper than that. this is only my garage and i may only use it a handfull of times. i didn't want to spend a lot of money. i was thinking of getting a piece os steel pipe about 10 inch or so and then running my 6 inch pipe threw the 10 inch pipe from the ceiling out the roof would this be okay or is this a no no. Thanks in advance for any help or ideas