We are taking the following precautions due to the COVID-19 virus. All of our technicians have masks, glasses, latex gloves and shoe booties if they have to enter your home. Our technicians also have hand sanitizer and disinfectants that they use after every call.
If we are there to do maintenance and we don’t have to come inside your home to get to the equipment, we are asking homeowners to adjust the thermostat for us so we can do the system maintenance without entering the home. We will not be shaking hands and will keep our distance from customers.
However, if your ducts are leaking air, or aren’t properly insulated, a significant amount of energy loss can occur. That’s why it’s important to seal duct leaks. Repairing torn insulation on ducts should be a key part of maintaining effective ductwork.
So, how does one go about repairing torn insulation on ducts? Ideally, an HVAC technician should complete the job by following the steps below:
Spotting torn insulation is fairly easy, at least in places where you can actually see your ductwork. Otherwise, an HVAC pro can find the torn or missing insulation during a ductwork inspection. Once you’ve found where the insulation is defective, check to make sure the duct itself isn’t damaged. If that’s the case, you’ll want to repair the duct leak before attending to the insulation.
Apply quality metal-backed tape, covering the leak with about an inch of tape to spare, and then coat the repair with mastic sealant, using a stiff paintbrush or something similar. Once the duct leak has been repaired (if that step was necessary), insert some spare fiberglass insulation into the hole in the outer foil insulating material. The insulation fill should cover the duct repair, and pack the area where insulation is missing or torn.
Next, position the outer foil insulation to cover the repair, and then use metal-backed tape to cover the torn area, with the edges of the tape extending nearly an inch onto the existing insulation. Just to be safe, cover your repair with duct mastic, essentially repeating the process you used to repair the duct itself.