Foil tape is an excellent choice for duct, woodburning, gas service, and plumbing duct sealing. Foil tape contains a strong glue that stays put in temperatures as high as 500 degrees F, making it perfect for sealing wood stoves, gas utilities, and ducts. The 3M Fluetape high temp has the ability to hold up under temperatures as high as 600 degrees Fahrenheit, making sure that it sticks and holds on to your heating jobs.
The 3M 1.5 x 15 High-Temperature Flue Tape is a great choice for sealing your high-temperature air ducts. The High-Temperature 3M tapes are suitable for temperatures as low as 600 degrees F. Best for temperatures up to 600 degrees F. When applied to coolant pipes; the heat seals high temp aluminum tape onto the metal piping when temperatures rise. This is NOT a general-purpose tape to hold things on hot metal surfaces.
I used aluminum heat shrink tape over the top of my stovetop where flex attaches. I buy these all the time from the plumbing supply stores, and they are used for taping off gas vent pipes and running wires. I have used foil tape for internal pipes and never had a problem.
If you want to be able to remove your pipes, then use foil tape on the internal joints. The exterior joints should not be sealed at all. The pipe connecting to your wood stove or pellet burner does not need sealing, except when there is a hole in the tube or leaks.
Leaks caused by stovepipe seams can be prevented by sealing tape around a stovepipe or warm air duct. If your stove has a collar around the stove, you would need to run a 6 stovepipe through your roof, along with 6 ducting.
Not doing that Single Wall Stove Pipes will get hot as a few hundred degrees, far hotter than anything that is been evaluated for hotness tape I am aware of. Single wall black stovepipe gives off a lot more heat than double wall black stovepipe (which is desired most of the time), costs much less, and if needed, it can be cut shorter. Double-wall black stove pipes may be sleeved, but they do not extend into the interior walls.
Use rated stovepipe cement or caulking materials that are designed to work with wood stoves. Seal the vent pipes using an adhesive, such as duct tape or caulking. You can then put sealant into an opening close to a leak, but you can use the shutoff valve if none exists. If you can see where the leak is coming from, you could also tie cloth or towels around the pipes to try and stop the leak for now.
Using caulk, duct tape, or metal foil, you can plug holes in your fan’s housing. Metal tape or adhesive must be used to seal exhaust tubing into the fan box. Duct tape may be used to seal the holes in the dryer exhaust, but it should never be used like glue, nor as tape to put up to a wall.
Duct tape, according to current testing, cannot be used at all in your HVAC system, as it responds poorly to heat and fluctuations in temperature.
Duct tape is not meant to be used for sealing your air ducts; rather, it is meant to serve as a dust collector. Well, most duct tape is made from a rubbery glue, and rubbery glue is notorious for separating from the backing during hot-temperature applications.
Because rubber is similarly flammable, the glue used to stick the tape is also combustible, so it is fire-proof.
The grid cloth used in making duct tape is coated in polythene, making it non-flammable if exposed to heat. Excessive heat can melt the glue in some tapes, rendering them useless.
Insulating the tubing with insulating tape helps solve this problem, and making sure that your insulation is sealed tightly is where you should be using your foil tape. Fiberglass ducts need aluminum foil tape, whereas sheet metal ducts are sealed using metallic foil tape, duct tape made for professionals, or a grid-reinforced adhesive. Fiberglass, basalt, and aluminum foil tape are typically used for high-temperature gaskets, sealing, caulking, thermal insulation, and encapsulation applications around furnaces, furnaces, and hot pipes. Combine the versatility of aluminum with the weather-resistant sealing capabilities of adhesive tapes, and you get a highly versatile product: aluminum foil tape.
To put it another way, the line of aluminum foil tape products from ECHOtape are designed to stand up to temperatures fluctuations, UV exposure, and other solvents that typically affect and break down the bonding performance of various types of tape, making them the perfect choice for both building and industrial applications. ECHOtapes All Weather Aluminum Foil Tape is coated with an excellent performing, fire-retardant, solvent-acrylic solvent-based glue, which works equally well under both hot and cold extremes. ECHOtapes foil tape works from 248degF to -22degF, and it can be applied from 14degF to 104degF.
To air seal the surrounding combustible combustion vents, use UL-rated caulks and collars or sheet metal that is cut to fit and sealed with UL-rated caulks, maintaining the correct gap between the vents and the combustible materials. All installations must be made sure to wall-seal to flues within the structure using expanding foam, point-and-seal with sand and cement, or use some other appropriate materials.
The width of a roll will vary depending on what you are using it for: the larger your flues or pipes, the larger the amount you need to wrap around it in insulating tape. Nashua 324a Premium Foil Tape, which is UL-listed and available from The Home Depot, is the best option for hard-sided duct sealing since it can be labeled as both 181A-P and 181B-FX. Regarding using duct tape in your furnace vent ducts, no tape is allowed under any circumstances. The use of tape for the attachment of any type of vent pipe that supplies the gas appliances is not a permitted method of installation.