When it comes to sealing air ducts, water-based putty duct sealant is the best option. It is easy to clean and maintain, and it has been used for a long time. You can apply it with a brush or a caulking gun, depending on your preference. When sealing ducts, you must make sure to put a layer of silicone putty along both edges of the joint.
For round ducts, use aluminum foil tape instead of duct tape. Additionally, each section of the duct must be sealed with the next, and the joints of each duct must also be sealed. You can do this by taking a gallon bucket full of duct sealant and applying it directly with a brush. However, if the leaks are too many to repair, it may be more cost-effective to replace the ducts entirely. Leaky air ducts can cause energy consumption to increase and distant rooms to receive less air flow than expected.
To ensure that your sealant meets safety standards, look for UL181A or UL181B marks on the product. UL181A is used for rigid fibrous glass ducts and UL181B is used for flexible air ducts and flexible air connectors. If you are looking for an alternative to traditional sealing methods, you can use high-quality adhesive tape, putty, or Aeroseal sealant for better results. Sto makes two products - mesh tape and sticky material - designed to seal air leaks at the seams of the coating. Hardcast also recommends using Foil-Grip butyl tape with ducts, duct plates, or flexible galvanized steel ducts. When it comes to sealing air ducts, it is important to choose the right sealant for the job.
Water-based putty duct sealant is an effective and proven method that has been used for many years. It is easy to clean and maintain, and can be applied with a brush or caulking gun. Additionally, you must make sure that each section of the duct is sealed with the next and that all joints are properly sealed with silicone putty or aluminum foil tape. It is also important to look for UL181A or UL181B marks on the product to ensure that your sealant meets safety standards. If you are looking for an alternative to traditional sealing methods, there are several options available such as high-quality adhesive tape, putty, or Aeroseal sealant.
Hardcast also recommends using Foil-Grip butyl tape with ducts, duct plates, or flexible galvanized steel ducts. Sealing air ducts correctly is essential in order to maintain energy efficiency and proper air flow in your home. Additionally, you must make sure that each section of the duct is sealed with the next and that all joints are properly sealed with silicone putty or aluminum foil tape.
