Aluminum foil tape for ductwork is a type of pressure-sensitive tape that is made of aluminum foil and an adhesive. Aluminum foil tape is commonly used in air conditioning and ventilation ductworks to seal and join the seams of the ducts.
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Central air condition ducts are often routed through unconditioned zones in the building.
A metal duct conveying cool, conditioned air through a broiling attic in summer or warm air through a chilly crawl space in winter may lose a substantial amount of temperature.
On average the air ducts leak around 20% to 30% of the air conditioned or heated air.
These losses can be reduced by insulating metal ductwork with wrap-around insulation.
In order to help improve efficiency, it’s important to seal all of the air ducts joints with aluminum foil tape for ductworks.
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Here are some of the primary uses of aluminum foil tape for ductwork in this context:
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Sealing Duct Joints
Aluminum foil tape provides an effective solution for sealing joints between duct sections. It helps prevent air leakage, ensuring that conditioned air is properly distributed throughout the system. By applying foil tape to the joints, you can create a tight seal that reduces energy losses and improves overall system efficiency.
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Repairing Damaged Ducts
If there are any punctures, cracks, or tears in the ductwork, aluminum foil tape can be used to repair them. Simply clean the damaged area, apply the tape over the affected area, and firmly press it down to create a secure bond. This helps restore the integrity of the duct and prevents air leakage at the damaged spots.
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Insulation Support
Aluminum foil tape is often used as a reinforcement for insulation materials in ductwork. It can secure insulation blankets or wraps in place, preventing them from shifting or sagging over time. By providing added support, aluminum foil tape helps maintain consistent insulation coverage and enhances thermal efficiency.
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Vapor Barrier Installation
In certain applications, such as when installing a vapor barrier in humid environments, aluminum foil tape is employed to seal the edges and seams of the barrier material. This ensures that moisture and condensation cannot penetrate through the joints, helping to maintain the desired humidity levels within the ductwork.
