6" insulated flex duct in my crawlspace was somewhat damaged on either end by a guy doing some floor leveling.
1) On one end his halogen light got too close and melted a hole in just the outer black plastic that surrounds the insulation. Insulation seems intact there.
2) The other, more concerning, thing is that his new beam was put right where the duct turns upward into the floor outlet. The beam is actually pushing the duct over enough to have restricted the 6" diameter into the boot by maybe 1/3. When I look down into the duct with the register off, I don't see a nice gradual turn anymore, but the duct that is pushed over. I can actually feel the corner of the beam jutting into the duct if I put my hand into the duct from the room.
The beam also tore some of the black plastic from the duct.
Are the above issues things that should concern me? Well, let me restate. I AM concerned that someone would be that careless. But why the new beam MUST go nearly on top of an existing duct is beyond me.
Is it something that will in any way be detrimental to the performance of the duct? What does the outer plastic on the flex duct actually do? I can get to the first area that was melted to repair that if needed, but can't even get my hand around the other area since the new beam is shoved into it.
Please help! I haven't yet paid the man for the new beam and need to know if repairs are in order before I pay him.
Thanks for any help.