I just moved into a new house and found that couple of floor ducts have fallen off in the space below. They were screwed from below to keep it in place and I am not sure how to fix it back again to my floor. Can someone please help me with this.
How to reattach an HVAC duct that came loose below the floor
ducts
Best Answer
The tiny screws have obviously failed so you'll need to re-fasten the flange to the subfloor.
It looks like a 6 inch duct so if you can reach the duct with your hand then do this:
Permanent fix
Temporary fix as requested in the comments
Instead of toggle bolts you could:
Since you have to go to the store to buy the construction adhesive anyways then why not just buy the toggle bolts and drill bit instead? It will take the same amount of time and you'll know it's done properly.