Sealing Floor Ducts

Seal the seam between the duct boot and the flooring or sealing framing and finish material.

Sealing floor ducts.

Use your putty knife to generously coat the aluminum tape with duct sealer. An odor alerted me to standing water debris and even a dead animal in the ducts below my floor. If you live in a house with a crawl space there is a good chance the floor vents are not sealed. Diy duct sealing only goes so far.

This is one of those things that can go unnoticed but have. I have galvanized air. Only qualified contractors should perform changes to your duct system. The heat then rises and continues to warm the rest of the room.

Heat must travel a shorter distance and enters. Floor vents are typically used in homes where the furnace is in a basement or the ducts the piping from the furnace travel through an underground crawlspace. Today s technology enables you to seal your entire air duct system from the inside. How to seal duct boot to ceiling with fiberglass mesh tape and mastic for gaps larger than 3 8 inch.

Use caulk for gaps that are less than 3 8 inch. Floor ducts are effective because they deliver heated air at floor level. I just discovered that the air ducts in my concrete slab have problems. The tape does a great job sealing but as the metal expands and contracts with seasons it can begin to come loose.

If you really want to seal all of your air ducts you will need to contact a professional. Use fiberglass mesh tape and mastic where gaps are larger than 3 8 inch.