On 2 Jul, 09:24, "Mike" wrote:
am looking to take off all registers inside house and use mastic to seal all the
boots. is it as simple a job as just covering hand with latex glove and smearing a
generous amount into the area where the boot meets the sheetmetal duct?

any info or corrections are appreciated. home depot sells the mastic so I know at
least where to get it

What's a boot?

And why are we doing this?