Encapsulating the interior of duct work?

[Jack2007]

Anyone have experience with encapsulating the interior of duct work?

I have a mould problem inside my duct work apparently because my previous system was way too big for the house.
A fellow told me of a company that sprays a material throughout the duct work to cover the inside.

He told me they often do this for houses that had fires. Supposedly they "clean", then "disinfect", then "encapsulate" the interior.

Never heard of this. Hope someone here knows and can give some opinion on such a procedure.

Thanks.
.

[adrianf]

There are products and there are companies; do your due deligence.

http://www.achrnews.com/Articles/Art...00000000373402

[drk]

Putting an encapsulate in an HVAC system is a bad idea. Encapsulate will break down over time and start blowing out the duct. If a company cleans the HVAC system correctly there will be no need to encapsulate it. Now if you have mold or insulation breaking down you should apply a coating like Foster 40-20 to it. What ever coating you add make sure it is EPA approved for use inside of an HVAC system.

[Gunnery Sergeant Hartman]

Tear that duct out and replace it all...

[ECIndHVAC]

Tear that duct out and replace it all...

Prepare to tear down...

Prepare to tear down, aye sir!

Ready...move!...

...OK, you've got 100, 99, 98....3, 2, 1, zeeeerrroooo. You should be...

Done sir, done!

Why is that boot still in my floor? Good. You wanna move slow, put back my ductwork right now! Ready...move!

[m-cooling]

Tear that duct out and replace it all...

Thats what should be done for sure.

.But.......Only put back in after the root of the problem has been determined and corrected.

It may not be a ductwork problem so much as other problems around your house. You got a sick house sir if you have mold in your ducts.

[m-cooling]

Repairing or encapsulating or even teari ng out and putting in new ducts won't change much IMO. Get some experts there to see whats going on.