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View Full Version : How to bolt a safe to a wood floor?


Dreaded Claymore
01-15-2012, 2:19 PM
I'd like to bolt down a safe to the wood floor in a closet. It's in a house that's about a hundred years old. I don't think I'll be able to access the underside of the floor.

Does anyone have any suggestions?

EDIT:
Most homes will have a crawl space under the house if they are built on a subfloor. Just because you have wood floors doesn't mean it's not built on a slab of some type. Given the fact that it's 100 years old, it's probably got a crawl space. Find the crawl space first then get back to us for some bolting down ideas. If no crawl space, then it's on some type of a slab/stone foundation. Either way confirm whats under the flooring and go from there. c good

There's definitely a crawl space. I was just hoping that I wouldn't have to go down there, because it's extremely narrow. :( I'm pretty sure I'll fit, though.

kemasa
01-15-2012, 2:28 PM
The first thing is to see if you can actually access the underside of the floor rather than not being sure.

There are expanding metal parts at the hardware store, which could be used. I hope you own the house though.

Henry Shooter
01-15-2012, 2:35 PM
Look at not bolting the safe to the floor. Instead, get a piece of metal plate that is 3/8 to 1/2inch thick.. Cut it to be bigger than the access / door to the room you want to put it in and bigger than the safe. Then bolt the safe to the plate. If your floor will handle the weight, which it should because the weight is spread out. If the people that try to steal the safe, they cant get it out of the door. Just an idea

gunboat
01-15-2012, 3:14 PM
HS, that is a capital idea!!!!

If you are deternined to fasten the safe to the wood floor plain old lag screws should do the chore.

c good
01-15-2012, 4:14 PM
Most homes will have a crawl space under the house if they are built on a subfloor. Just because you have wood floors doesn't mean it's not built on a slab of some type. Given the fact that it's 100 years old, it's probably got a crawl space. Find the crawl space first then get back to us for some bolting down ideas. If no crawl space, then it's on some type of a slab/stone foundation. Either way confirm whats under the flooring and go from there. c good

Below.Zero
01-15-2012, 4:26 PM
Look at not bolting the safe to the floor. Instead, get a piece of metal plate that is 3/8 to 1/2inch thick.. Cut it to be bigger than the access / door to the room you want to put it in and bigger than the safe. Then bolt the safe to the plate. If your floor will handle the weight, which it should because the weight is spread out. If the people that try to steal the safe, they cant get it out of the door. Just an idea

:thumbsup:...... Niiiccceee

Dreaded Claymore
01-15-2012, 5:15 PM
Most homes will have a crawl space under the house if they are built on a subfloor. Just because you have wood floors doesn't mean it's not built on a slab of some type. Given the fact that it's 100 years old, it's probably got a crawl space. Find the crawl space first then get back to us for some bolting down ideas. If no crawl space, then it's on some type of a slab/stone foundation. Either way confirm whats under the flooring and go from there. c good

There's definitely a crawl space. I was just hoping that I wouldn't have to go down there, because it's extremely narrow. :( I guess the next question is, will I fit?

Edit: Yeah, I'll fit.

Tripper
01-15-2012, 5:30 PM
Look at not bolting the safe to the floor. Instead, get a piece of metal plate that is 3/8 to 1/2inch thick.. Cut it to be bigger than the access / door to the room you want to put it in and bigger than the safe. Then bolt the safe to the plate. If your floor will handle the weight, which it should because the weight is spread out. If the people that try to steal the safe, they cant get it out of the door. Just an idea

that is an awesome idea regardless of wood floor or the actual location you want to place it

Dreaded Claymore
01-15-2012, 5:41 PM
Look at not bolting the safe to the floor. Instead, get a piece of metal plate that is 3/8 to 1/2inch thick.. Cut it to be bigger than the access / door to the room you want to put it in and bigger than the safe. Then bolt the safe to the plate. If your floor will handle the weight, which it should because the weight is spread out. If the people that try to steal the safe, they cant get it out of the door. Just an idea

Thing is, you'd better be able to weld, and weld in that room. That's the only way you could make a metal plate that's too big to get out the door. Otherwise, you won't be able to get it in!

kemasa
01-15-2012, 5:51 PM
Thing is, you'd better be able to weld, and weld in that room. That's the only way you could make a metal plate that's too big to get out the door. Otherwise, you won't be able to get it in!

Not at all. You place the plate in first, then the safe on top of it. It only would not fit out when it is bolted to the safe. You could also make it in pieces and it need not be attach to each other, only the safe.

Fern
01-15-2012, 5:53 PM
If your already going under the house I would suggest installing something to support the added weight.

IntoForever
01-15-2012, 6:11 PM
When in the crawlspace, make sure there are no wires and plumbing in that location. Hitting something you're not supposed to can have really expensive consequences. Also take note of the sub floor, usually diagonal wood planks and try to bolt to different ones. If you can, also bolt it to as many walls as possible (I got lucky and my safe is bolted to 3).

Saym14
01-15-2012, 6:31 PM
If your already going under the house I would suggest installing something to support the added weight.

agreed - add some concrete piers with 4x4 posts. I would drop long threaded bolts in from the top -long enough to clear the under side of the floor joist and bolt them to 2 steel plated under the floor joists.

shooterfpga
01-15-2012, 6:34 PM
through bolt anchors, heavy steel plates.