Tape on cleanouts

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slangtruth

Member
Nov 13, 2011
64
Western MA
When the nimrods who did so installed my St. Croix Revolution furnace. one of the things they did do right was put in two double-tee cleanouts. There's one inside right behind the furnace that goes horizontally into the furnace and vertically starts the run to the outside. There's one outside which makes the horizontal to vertical transition out there. On the inside one, they ran a layer of silver HVAC tape over the two cleanouts (they didn't do that on the outside one). I haven't seen anything like that on the various pictures of other's installations I've seen here, is it a normal practice? It's not that big a PITA to peel it off to get the cleanout covers off and put some back on afterwards, but if it's a step I can skip maybe I will. The caps are held in with a single screw once I get the tape off.
 
Yes normal practice because its easier to get the tee cap off. If the cap was gooped with silicone it pretty impossible to remove without damage. The tape will only seal the outside of the tee cap and not get into the joint.

Tape is still a PITA to remove, But you can cut it for cleaning. Some tough scraping to remove or possible adhesive remover might help?
 
To seal my inside cleanout cap and make it easy for removal I made a "gasket" by folding some aluminum foil into a strip about 3/4" wide and about 6 layers thick from the folds. The strip is long enough to encircle the vent pipe cap joint. To this aluminum strip I applied a layer of high temp silicone goop to one side and let dry. This "gasket" I wrapped around the joint and then installed and tightened an O-Ring clamp over it. No smoke leaks and the cap should be easy to remove.
 
When I tape my clean-out cap joint I fold the tailing end of the tape over making it easier to take off the next time. Then when I take the tape off the next time I use a hot air heat gun on it and it peels off fast and easy.
 
Any other suggestions on how to seal up the cleanout tee cap? Just did a good cleaning on my stove and venting today and when I went to start it back up I smelt smoke so I put a flashlight back behind the stove and could see a small stream coming from the cleanout tee cap. After it started up the smoke smell went away. I didn't take the cap off during cleaning. Used the linteater from outside with the shop vac adapter (up and out setup with horizontal discharge) and think that the brush head must have loosened up the cap a little? If the tape is the best way to seal the cap up could someone post a picture of how theirs is taped up? Thanks.
 
google search "Rescue Tape". Its a silicone tape, used it to seal up my pipe connections. Used high temp silicone for the stove adapter.
Found the tape at Lowes.
 
Wachusett said:
google search "Rescue Tape". Its a silicone tape, used it to seal up my pipe connections. Used high temp silicone for the stove adapter.
Found the tape at Lowes.

Looks like rated up to 500 deg F. Is that enough?
 
For the outside of the pipe, I believe it is.
 
exoilburner said:
When I tape my clean-out cap joint I fold the tailing end of the tape over making it easier to take off the next time.

X2
 
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