How To Insulate Sheet Metal Ductwork

Check the speed of the blower motor on the furnace.

How to insulate sheet metal ductwork.

If necessary switch the wires to reduce the blower to its lowest. Simply unroll the fiberglass and wrap around the duct in a spiral fashion making sure to overlap the ends at least 1 to make sure that all of the exposed metal is covered. Make sure the foil surface of the insulation is free of dust before applying the tape. Richard trethewey helps a homeowner insulate his ductwork.

Lastly buy hollow core foam insulation which is easy to install as it self seals and works best with long lengths of pipe. You can fasten and secure the ends of the batts with duct tape but that may cause the insulation to get spoiled. Insulating hvac ductwork when insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. If you are installing preformed insulation disconnect an elbow place a plastic cap over the end of the duct and slide.

The 36 wide rolls are great for insulating sheet metal duct runs and the 9 wide rolls are great for insulating fittings. Installs easily and wraps around irregular ductwork areas well. To fit your ducts simply cut the sleeve to length with a sharp pair of scissors. Wrap metal duct tape around any seams you see in the ducts.

Therefore mechanical fasteners are more advisable for usage than duct tape. See below for a shopping list tools and steps subscribe to this old house. Choose a faced fiberglass. Make sure you seal all of the ductwork joints you had left unsealed in order to.

Press a continuous strip of foil tape to all longitudinal seams along straight runs of duct. Go to the basement or crawl space of your home. Foil backed self adhesive foam duct insulation. Be sure to seal any rips or punctures in the vapor barrier with tape so no moisture can get in.

Wear work gloves long sleeves and long. Like any other insulation use additional layers to provide better insulation power. How to insulate sheet metal ac ducts 1.