Sealing Ac Ducts In Attic

Steps to sealing attic air ducts.

Sealing ac ducts in attic.

Snap a plastic cap onto the duct end to keep the insulation from snagging then slip the pre formed piece over the duct. Air sealing your ducts is cheap and easy and it save s a lot of money. Using a duct sealant called mastic is the professionals choice. Apply a generous amount of sealant mastic over the thermal leak.

After sealing air ducts in the basement and attic you will find that both areas will become colder. Seal both the supply and the return air ducts. When the hot humid attic air contacts the cold duct or the cold duct boot the moisture in the air condenses on the cold surface just like the condensation that happens on a cold can of beer. Duct sealing by michael church here and in this video we re going to show you how and why it s very important to air seal the run of the ductwork.

Well if they re not properly sealed. If you do not have proper insulation in your attic and basement consider insulating both. Learn how to seal yo. Return air duct sucks air in so sealing them keeps smelly basement air and or attic dust from creeping into our air supply also.

Use zip ties to secure any loose ducts to the attic floor. Locate the source of the thermal leaks by inspecting the ductwork while the air conditioner is running. Possibly in an unfinished basement. Duct leakage occurs when the conditioned air in a home escapes your duct system through holes loosely connected ducts or improperly sealed duct connections.

Gently pull the insulation over the entire length of duct. In fact leaky ducts can result in the loss of 20 to 30 percent of the air that runs through your hvac system according to energy star. It is also recommended that you have your pipes insulated in both areas. The other consideration here is that we re not only sealing the air in but the dust out.

Make sure the duct is secure in place and wait for it to dry. We make your home or building more comfortable in the continental us and canada. Sealing ductwork from the inside out is a much more complicated process and will likely require hiring a professional. You all have duct work either in your attic or crawlspace or something like that.

Attic systems can help you improve your home s efficiency and comfort with attic insulation air sealing duct work solutions radiant barriers and more. Air duct sealing video transcript. The air in your vented attic is hot and humid just like all outdoor air in florida.