My question is there are main types of flues out there from single wall to multi walled. Is there a stamp, label or a marking of some sort that I should be looking for that tells me what type of flue it is.
Further more what are the appropriate clearances for a single walled pipe compared to a multi walled pipe. Along with the clearance issue I have read in some posts that because fiberglass insulation is not flammable that it can be in contact with a flue but cellulose insulation can not. If someone knows of a good website with this information then please let me know. I have also attached some pictures that might present some more discussion.
I have also attached a picture of a water heater flue located in a garage that is missing a collar at the ceiling. I called it out because of the fire rating between the interior and exterior of the home. I just wanted to know if that how you would call that issue out or if it’s an issue at all.
All the B-vents I’ve ever seen have a label on them that specify 1" clearance. The site David posted says 2". All I’ve ever heard as an inspector is 1" for a B-vent and 6" for a single walled pipe. That company is located in the People’s Republic of California. Maybe that has something to do with it.
Here’s an example of what I say: “The water heater vent pipe is too close to combustible material, and should be serviced before the close of escrow. A single-walled vent pipe should be six inches away from any combustible material, and a double-walled vent pipe should be one inch away. This construction defect is considered a fire hazard. We recommend that repairs meeting the manufacturers specifications be conducted for fire safety reasons.”
Mario:
You obviously didn’t get the pills in you in time. Now you think you’re me…or has the obssession become so great you have 2 personalities (or more) inside your head…me and you!! When I’m not around you can still carry on the discourse…it’s just I can’t be there. Please record it!!
lol