How To Insulate Sheet Metal Duct

The 36 wide rolls are great for insulating sheet metal duct runs and the 9 wide rolls are great for insulating fittings.

How to insulate sheet metal duct.

Invest in duct insulation today to safeguard your family s health and your pocketbook. Wear work gloves long sleeves and long. If you need help deciding which type of insulation you need set up an energy consultation. How to insulate sheet metal ac ducts 1.

You re throwing money out the window. Press a continuous strip of foil tape to all longitudinal seams along straight runs of duct. Next seal the leaks with one or more appropriate sealants. To fix this you can 1 insulate the outside of the duct so it doesn t warm to room temperature 2 insulate the inside of the duct so the cool air never meets the warm metal duct or 3 both.

Start at your heating and cooling units and work toward the last register as you did when searching out the leaks. Lastly buy hollow core foam insulation which is easy to install as it self seals and works best with long lengths of pipe. For a more secure installation use fiberglass spray glue adhesiveto attach the fiberglass to the sheet metal. Therefore mechanical fasteners are more advisable for usage than duct tape.

Check the speed of the blower motor on the furnace. I m trying to achieve an r 8 insulation value but the big box stores only sell r 6 frost king wraps. For your situation it s when the cool air hits the warm metal duct. Wrapping the duct in a foil faced blanket.

Go to the basement or crawl space of your home. Duct board much like the duct liner is also a fiberglass product. Applying spray foam insulation to the outside of the duct. I m installing properly sealed round metal ducts in my unconditioned attic for heating and cooling.

The two most common ways to insulate ductwork are. Start saving money today. Choose a faced fiberglass. Stop wasting money and energy with a leaking duct system.

You can fasten and secure the ends of the batts with duct tape but that may cause the insulation to get spoiled. 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. Protect yourself from itchy fibers when working with fiberglass insulation. Duct liner isn t generally a diy installation and if your ducts already have liner you don t need to insulate the exterior.

Wrap metal duct tape around any seams you see in the ducts. I ve probably got 100 total of 6 duct to cover. Before sealing your ducts make sure the surfaces to be sealed are clean and dry especially if you plan to use tape as your sealant.