Homeowners who want to take on duct sealing as a DIY project can start by sealing air leaks with putty or metal tape and insulating any ducts they can access. Air duct sealing putty is a flexible, non-hardening, and non-toxic compound designed to seal ducts without the need for a compressor or refrigerant. Most putties for sealing air ducts are non-toxic, making them safe to use in areas with poor ventilation or limited access to safety equipment. Duct sealing putty has similar properties, but it is specifically formulated for use in ducts and other heating and cooling components. Depending on the situation, homeowners can use a putty to seal air ducts to repair small holes and cracks in metal ducts, or a putty sealant to repair larger holes in metal or flexible ducts.
Putty for sealing air ducts is an ideal solution because it is usually cheaper than tapes and other types of sealants, yet still creates a reliable seal. Leaks can be repaired with a putty to seal air ducts, which will form a permanent bond with the metal surface. The biggest advantage of putty for sealing air ducts is that it doesn't require any clean-up afterwards. The main differences between putty for sealing ducts and putty for plumbers are the ingredients used to make them and their melting points.
