Well, Sweep will be over in a few hours to discuss the project. I will ask about the brand of pre-insulated flex that he is specifying.
One thing about the basement install, is that there is not a cold air return that I can find, nor can DH. As I looked on various threads about distances from cold air returns, the topic of leaky duct work popped up. I know our duct work is leaky. It was put in decades ago, probably in the 70's.
On the threads I found about the 10' rule from cold air returns the topic of CO came up and that using cold air return to circulate stove heated air around the house could also circulate CO around the house, increasing the CO danger. Yet wouldn't the danger already be there, if the stove was near a cold air return or 10' away.
What is OAK? is is Outside Air K---?
I talked to my brother who works for a large HVAC company, and never works with wood burning stuff, and he didn't know about the cold air return. Stated he'd have to look the code up. If you don't know what to ask, how can you ask???
My brother said if I wanted he could come over and help me install a DIY chimney, along with his HVAC apprentice son. He would charge a labor fee, but said he'd be reasonable. I might want to do this.
Other option would be to let the Sweep do the install, but if I don't like the liner specs, ask if I could order my own liner and go with the rest of the estimate. He did say he doesn't like to work with the add on liners because they snag more readily. I have seen pre insulated liners that have the outer covering of aluminum and a liner with steal on the outer layer. I would like a 1/2" insulation, as there are combustable next to the brick chimney, as it goes through the floor, ceiling, and the roof. Am I right in seeing this as a problem with wood next to brick chimney, needing insulation of the flex liner?
There are a lot of questions here, so to summarize:
- What are preferred specs of pre-insulated flex liners 6"ID?
- CO danger exists regardless of proximity to cold air return, correct?
- What is OAK?
- What is the opinion of ready made insulated liners vs on the ground lining prior to installation?
- I could not find a thicker walled Home Saver Pro, that was pre insulated. Woody Stover, yesterday at 2:16pm, above, mentioned preferring the Home Saver Pro, over the UltraPro, because it was thicker. Is there a HS PRO that is pre insulated?
- I would like a 1/2" insulation, as there are combustable next to the brick chimney, as it goes through the floor, ceiling, and the roof. Am I right in seeing this as a problem with wood next to brick chimney, needing insulation of the flex liner?