When it comes to sealing leaks in ductwork, there are a few different methods you can use. To start, you should seal air leaks with putty or metal tape and insulate any ducts that are accessible, such as those in attics, mezzanines, unfinished basements, and garages. Never use adhesive tape, as it is not durable. Instead, apply a layer of silicone caulk along both edges of the duct joint and seal round ducts with aluminum foil tape.
Despite its name, this type of tape is not approved for duct sealing and does not hold up well in the long term. Another option is to use a thick, pasty substance that can be applied to voids and leaks in ducts with a caulking gun and a brush. This method is often used by professionals who will spray the inside of the duct system with a liquid rubber sealant to cover all the holes, cracks, and joints that leak air. It is important to note that sealing air ducts can help reduce energy consumption in your household.
In some cases, an evaluator will visually verify that all joints and connections are sealed with putty or metal tape and that all duct covers are sealed to the floor, wall, or ceiling with putty, foam, or adhesive tape. Connecting the sealant injection system to supply ducts can be difficult in small homes or tight areas, or where the space between the top of the air controller's heating coil and the roof is small. Some people argue that the air that comes out of the duct is still in the house, so energy isn't really lost. However, leaks are a common problem in many homes; poorly sealed duct systems have been reported to lose about 40 percent of heating energy or refrigeration.
In those cases where self-made methods of sealing air ducts are used to save money, it can be difficult for beginners to enter hard-to-reach areas or when there are leaks hidden behind drywall. To prevent these situations from happening, make sure the ducts are sealed properly - either by using traditional methods such as applying some duct tape, putty, and insulation - or by hiring a professional to blow liquid rubber sealant through the system. Modernization products for sealing ducts from the inside include aerosol coating products available in the market. The aerosol-injected acrylic sealant is an effective way to eliminate leaks in ducts when combined with manual sealing of other easily accessible areas.
It is recommended to seal them manually with fiberglass mesh tape and putty, and the duct material must have an internal air barrier. Sealing leaks in ductwork is essential for ensuring that your home's heating and cooling systems are working efficiently. By following these steps and using the right materials for sealing air ducts, you can save money on energy costs while keeping your home comfortable.
