How to bolt down a home safe: wall, floor, or stop

The safe is still in the cupboard, half out of the carton, and the bolts are either in a small bag or missing. How to bolt down a home safe starts with the holes the maker punched, and with a wall or floor that can hold them. If you only have plasterboard, a loose floorboard, or a tenancy that forbids drilling, you stop.

A light safe fails when someone can pick it up. Chubb’s installation guide treats safes under 1,000 kg as light enough that an insurer may still expect a masonry fixing. Burton Safes prefers a joist to a floorboard, and MB Direct’s point is that an unfixed safe can leave the building. None of those guides turns a bolt into a tested grade.

We read those three guides, Burg-Wächter’s UK Favor page, the FP 22 K maker page, and the Home Office handbook’s remark that timber floor loading is a judgement, in October 2026. That line was written for heavier cabinets. We did not drill a floor or test a safe in a lab. A qualifying purchase through our links can earn us a commission at no extra cost to you.

In short

Bolt through the holes the product already has, into masonry or into a floor joist, with the safe sitting flush. Chubb’s drill size belongs to Chubb safes. Burg-Wächter’s FP 22 K maker page allows floor screws up to 6 mm and does not include the hardware. Stop for a stud-only wall, a thermal block, hidden pipes or cables, or a rented home where you may not drill.

Why an unfixed box fails the job

A furniture safe is built so you can carry it in from the car, which is also what makes it easy to remove. MB Direct describes the failure in one move: if the box is not fixed, it can leave with the contents. A furniture safe on a shelf, or on carpet with nothing through the base, is a container you can relocate. A heavier cabinet can still go out on a sack truck if nothing ties it to the structure.

The Home Office handbook treats timber floor loading as a judgement, written for heavier cabinets than a cupboard safe. Take the physics and leave the firearms context there. A board is not an anchor. Bolts do not print EN 1143-1 or EN 14450 on a door sold without those certificates. A safe comparison can separate a light cupboard from a rated cabinet. It does not rewrite your schedule.

Match the holes the product actually has

Open the door and count the holes in the base and the back. Burton’s guidelines say to use two where the product allows two, because a single bolt lets the box rotate if someone lifts a corner. If both faces are punched, read the page for that model before you commit to the wall and leave the floor unused.

Burg-Wächter does not share one pattern across the range. The UK Favor page prepares that freestanding safe for wall mounting and includes the fixing material. The FP 22 K maker page talks about floor anchoring, with screws up to 6 mm, and the hardware is not in the pack. Copying that 6 mm figure onto a Favor, or copying Chubb’s drill rule onto another cabinet, ovals a hole the bit was never meant for.

One reviewer, writing about a Favor, feared that extra holes might affect the warranty. That stays a reviewer’s claim, not a fitting instruction. Drill through the holes already there, and use two where the safe gives you two. A Burg-Wächter anchor guide maps which listing talks about a floor and which talks about the rear wall. Mark through the steel you own.

Whether the safe fixing kit is in the box

A safe fixing kit is the bolts, plugs, or screws the maker expects in those holes. The UK Favor page says the fixing material is included. The FP 22 K maker page says the hardware is not included, and the floor screws go up to 6 mm. If the amazon.co.uk bullets are silent, treat the kit as missing until you see the bag.

Buy a fixing only when the page says it is missing, and only in a size that passes the hole you have. A Favor that arrives with its own fixings should use those, in the wall that page told you to prepare. A masonry plug in a timber joist is the wrong fastener, and two holes with one bolt leave a pivot.

If you are still choosing, read the inclusion line before you compare prices. A carton with no bolts costs more once you buy fixings that pass the holes. A wall safe is meant to sit in the wall. A freestanding box you bolt on afterwards is a different product.

When to stop before you drill

Put the drill down until four stops are clear: a stud-only wall, a thermal block, a rented home where you may not drill, and any hint of pipes or cables. Chubb’s guide tells you to look for services, and to deal with skirting so the body can sit flush. That check belongs before the first hole.

Plasterboard on timber, with no masonry behind it, is outside the fixing Chubb describes. Plugs in the board make a poor plasterboard safe fixing for a box someone can lever or carry. A long screw into one stud is still outside that masonry path. If the wall is studs and board, stop.

Thermal block is the lightweight insulating block in some inner leaves. It can look like brick, and a standard expansion plug does not bite the way it bites dense brick. The notes we read give no resin specification, so this page will not invent one. If the wall sounds hollow, ask someone who can see it before you mark a hole.

If the tenancy forbids holes, or the landlord has not agreed in writing, do not drill. A written yes still leaves the substrate rules in place. For services, use a cable detector and look from the loft or the room below. If you cannot say what is behind the mark, leave it alone.

Bolt a safe to the floor or fix it to the wall

Once those stops are clear, bolt a safe to the floor only into a joist or into solid masonry, and fix a safe to the wall only into brick or dense block. Burton prefers the joist to the floorboard, avoids the edges of slabs, and wants two holes where the safe allows two. If skirting holds the body off the brick, cut it back so the steel bears.

Can you bolt a safe to floorboards? MB Direct says the boards alone will not hold. A screw that stops in the board has only that thickness, then the void between joists. Find the joist from below only in a bay you have checked for pipes. Stay off the edge of a concrete slab. On the wall, set the holes against the masonry, and leave board-only walls on the stop list.

1. Empty the safe and mark through the existing holes with the body held flush, or flat on the joist line.
2. Confirm masonry or a joist, clear of slab edges, pipes, and cables, and a landlord’s written yes if you do not own the place.
3. Use the bolts from the carton, or bolts that pass the holes the maker allows. Leave Chubb’s drill diameter on Chubb safes. The FP 22 K’s 6 mm figure is that model’s screw ceiling.
4. Drill, insert the fixing, and tighten until the body does not rock. Use two holes where the safe gives you two.
5. Try to lift a corner of the empty safe. If it moves, the fixing is in the wrong material.

If it still rocks on a sound wall or a found joist, call a fitter who can see the substrate. A larger bit papers over a miss in the wrong material. A named bolt in the instructions outranks a generic chart.