best way to seal up holes in steel door panel?

[perfecxionX 10+ year member]

ive seen people use fiberglass, steel sheeting, deadener, and mlv. Whats the most effective way to properly seal a door? I have a limited amount of damplifier (about 5 sq ft a door) and could do any of the above, but am leaning towards cutting small sheets of steel to cover the holes with (though im not sure how ill attach them)

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[Skittles619 10+ year member]

Im about to seal mine up with some plexiglass and liquid nails.

 

[Mattd0344 10+ year member]

I usually just throw a couple layers of metal tape on small areas. Metal tape sticks great too compared to Gorilla Tape and such; which will peal off from sitting in high temperatures.

 

[basscort2009 5,000+ posts]

masking tape the holes... then fiberglass over the tape and about 2-4 inches past the tape to stick to the door panel. ive done it before and it worked awesome