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Duct sealing warm air vent

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Uploaded by on Feb 18, 2010

Here in this video we remove a small duct vent register and seal the boot inside.

Venturi is the principle at play here. Look at this video from another youtube channel http://www.youtube.com/watch?v=_AJgEa2dbJU&NR=1&feature=fvwp and see what it might look like when your heating system kicks on.
I didn't make that video but it gives you an idea of how air pulls on the leaky edges and gaps.

When your heating ducts, or a/c ducts, push air out they also drag air out of the cavity formed above the ceiling, or below the floor.
Removing one a/c or heat register will reveal the same gap between the sheet metal boot and the drywall or sub-floor.

This problem is the reason many people suffer from allergies, mold, fiberglass problems and dusty indoor environments.

Using latex sealer is pretty simple, brush on, water soluble and dries flexible to form a rubber (latex!) seal to close that overcut gap.

Email me to discuss this if it's not clear how we do it.

Note; sometimes we discover the duct is installed wrong and extra sheet metal work is necessary.

Don't try this if you're not skilled in the inner workings of duct work or a duct design specialist.

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Uploader Comments (uodet)

  • Why do I get the feeling he's had "things" hidden in the vents?

  • @rick9565 maybe because there are things, in your vents.

    All seriousness aside though, there are things in every vent system, which is the whole point. Isn't that right?

    This was a serious situation where the home-owners lost their hearing because of the mold in the vents.

    Mold doesn't really qualify as a "thing" but after we sealed the duct distribution terminations, their hearing came back.

    Mold is dangerous, and people lose when they don't know about it.

    Hence the presentations.

  • John Wayne Gacy could have learned a few pointers from you.

  • lol. we could send him our CD course on "How to Improve Your Indoor Air Quality" if he wants.

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  • nice vid but what is the name of the sealant and where can I get it?

  • Nice video. I did something similar. I took the boot out, sealed it with mastic first (all joins are quite leaky), then put it back in and use polyurethane from the attic area.

  • alec baldwin: home repair specialist

  • I could not agree more with the issues that are being fixed. If they had started with SpeediBoots this would never happen.

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