Sealing Floor Ducts

I have galvanized air.

Sealing floor ducts. I just discovered that the air ducts in my concrete slab have problems. Use fiberglass mesh tape and mastic where gaps are larger than 3 8 inch. 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. That is where the duct sealer comes in.

How to seal duct boot to ceiling with fiberglass mesh tape and mastic for gaps larger than 3 8 inch. Only qualified contractors should perform changes to your duct system. The tape does a great job sealing but as the metal expands and contracts with seasons it can begin to come loose. Diy duct sealing only goes so far.

Make sure the sealer extends below the bottom of the tape but do not put any on your floor. Use your putty knife to generously coat the aluminum tape with duct sealer. This is one of those things that can go unnoticed but have. If you live in a house with a crawl space there is a good chance the floor vents are not sealed.

Today s technology enables you to seal your entire air duct system from the inside. The heat then rises and continues to warm the rest of the room. Watch this video for more tips to seal air ducts. If you really want to seal all of your air ducts you will need to contact a professional.

Heat must travel a shorter distance and enters. An odor alerted me to standing water debris and even a dead animal in the ducts below my floor.