Is duct tape good for sealing ducts?

Despite the name “dust tape”, never seal air ducts with adhesive tape. It just doesn't hold up. Regardless of the sealant you choose for your ducts, be sure to choose a high-quality product and clean the application area first. There are a lot of things that live up to their name, but unfortunately adhesive tape isn't one of them. While adhesive tape has many uses, wart removal is one that comes to mind.

This sticky substance should never be used to seal ducts. The adhesive tape can adhere to even the toughest surfaces and is able to withstand many things. But it does not withstand extreme temperature changes in air ducts well. Heating cycles can cause the adhesives on the adhesive tape to break. Over time, the adhesive tape weakens and ends up falling.

The question of tape against putty is not an easy one. However, an HVAC contractor will typically use a combination of putty and duct tape to achieve the perfect seal. An excellent option is putty tape, which looks like a regular aluminum tape, but has a suitable adhesive for putty. An easy way to determine if an air duct cleaning company is legitimate is to evaluate the tools it uses.

The researchers found that the adhesive tape allowed too much air to come out or simply fall off after a few weeks or months. In 1998, researchers at the Lawrence Berkeley National Laboratory (LBNL) conducted a 3-month experiment to test whether the insulating tape, along with 31 other sealants, could withstand the typical conditions found in air ducts. For example, if the pipe ducts have insulation around them, you will first have to unwrap them, seal the leaks and, finally, replace the insulation. With sufficient use of HVAC, the adhesive tape will fall off and you'll be left with the same, if not larger, holes.

Max Sherman, a Berkeley researcher, said that “while adhesive tape may not last long as a sealant, in the short term it's strong, sticky and quite easy to use. To simulate these conditions, hot air (167 °F) and cold air (53.6 °F) were introduced through several air ducts, each using a different type of sealant to keep the air inside. While placing adhesive tape around the holes or cracks in the ducts will serve as a temporary solution, it won't last long. It failed reliably and often quite catastrophically.

That was the result of a Berkeley lab test to see which sealants properly sealed air ducts. Instead of repeating this cycle, invest in a material made for ductwork or call an HVAC professional. Iain Walker, one of the researchers, said: “We think that heat degrades glue and that's what's killing adhesive tape. FoilMastic tape has the same properties as a water-based duct sealer bucket and will last for decades.

Duct tape is not designed to withstand extreme temperature changes, such as those coming from your HVAC system. It can also be difficult to reach all areas of the ducts, so you'll have to be especially careful when filling in important gaps, as you don't want putty to get inside the ducts. ducts.

Ava Wolma
Ava Wolma

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