I have hung plenty of ceiling fans mounted to ceiling joists or with braces between joists, but my father asked me to hang a 52″ ceiling fan in his apartment. The ceiling is concrete slab and there is no utility box in place.
I assume I have to mount a thin utility box to the cement ceiling , and then mount the fan bracket to the utility box.
My only fear is that with time and vibration from the fan, that anyhing screwed to concrete may loosen. I was going to use lead anchors with lag bolts to hold the bracket in. (the more the marrier atleast three)
Am I worried for nothing, or is there a trick or device to reduce vibration that the lead anchors will see?
thanks,
t
Replies
Big Blue Tapcons and a fan rated pancake box and surface mount wire mould.
I've always favored Wedge Anchors, because if you have to pull the box for some reason (maybe to use a deeper box), with wedge anchors, you just reattach the nut, but with tapcons you have to re-drill and go to a bigger size.
Maybe shoot some epoxy in with those tap cons
Never be afraid to try something new. Remember, amateurs built the ark, Professional build the Titanic.
I like Ralph's idea, that's how I did my last job under your circumstances. Consider a big dollop of Liquid Nails on the back of the pancake box.
Bob
Ralph W, Cag, and Bob hit the nail on the head. It may be a belt and suspenders approach but a fallen fan is not a pretty sight. I would sleep well under one attached in this manner. Just make sure you use the correct size drill bit for the Tapcons. Properly installed Tapcon pull-out strength is rather awesome.
Where is the wire coming from? Is it buried conduit or surface raceway (wiremold)? If wiremold you should use the matching box attached as described by the other guys.
I'd pass on the Tapcons if I were you.Use Thunderbolts or Thunderstuds instead.Lead anchors in a wall are OK but for pull down strength you need an expansion anchor over a longer length than a lead anchor in my opinion.I really hate Tapcons though,they either feel funky because the bit wobbled and the hole isn't the perfect diameter,or the heads snap off.
my 2 cents: there is a product i used once to hang a realy large sculpture from a concrete ceiling. it is called "Rockite" . i think it is a hydraulic cement, or epoxy?
i drilled 1/2" holes where i wanted my eyehooks, mixed up a batch, shoved it all in the hole. it set in an hour.
the sculpture probably weighed 120lb.
good luck rg