Seal Hvac Ducts From Inside

Since the early 1970 s a significant increase in the use of flexible duct which generally is internally lined with plastic or some other type of material has occurred.

Seal hvac ducts from inside.

Block off registers so sealant does not enter living space. A technician assembles the spray sealant injection system to seal hvac ducts from the inside. My hvac guy did not have a problem w this. I was doing it the way i thought was right pulling the duct tape off putting hvac mastic on the supply box cylinder using a zip tie to hold that in place and then using another zip tie to hold the outer sleeve in place.

We connect our proven technology to your home or business heating air system to distribute the sealing formula. I have 9 flex duct lines coming off a sheet metal trunk in my attic. Anybody find fault w that. If you really want to seal all of your air ducts you will need to contact a professional.

Our non toxic water based formula effectively seals all the holes in the air ducts and vents making sure the air goes where you need it not where you don t. In houses with forced air heating and cooling systems ducts are used to distribute conditioned air throughout the house. When repairing or installing ductwork always consult an hvac professional first. Duct seal on old ducts my ducts are 1960 era galvanized.

The air handler connection to the supply and return ducts must also be blocked off to prevent sealant from fouling the mechanical equipment. Today s technology enables you to seal your entire air duct. That is why flex seal insulation was created specifically to deal with weather extremes that leave your hvac vulnerable to leaks and issues causing bigger problems. However many modern residential air duct systems are constructed of fiber glass duct board or sheet metal ducts that are lined on the inside with fiber glass duct liner.

Hvac systems including ductwork react to extremes in temperature more than you think. I was going to get out the mastic and brush and mesh but it just seemed so much easier to use silicone caulk along the relatively tight seams. Diy duct sealing only goes so far. Not any product on the market can hold up under such variables without starting to breakdown.