How to Fit a Wall Mounted Key Safe Safely at Home
By Manage At Home | Published: 2026-11-03
Category: How-to Guides
A practical, step-by-step guide to fitting a wall mounted key safe securely, including placement, drilling, combination setup, and checks for carers and family access.
Quick answer
Fit your wall mounted key safe at chest height on a solid masonry wall, ideally out of direct street view, using the correct drill bit and screws. Set a unique combination, test the lock several times, and only then add your spare key.
Choose a discreet, reachable spot on solid masonry
A key safe is only as secure as its fixing. Pick a wall that is solid brick or masonry, not a fence panel, shed, or hollow drywall. Position it around chest height so you can reach it comfortably without stretching or bending, and avoid spots where it can be seen from the road or easily attacked with tools.
If you are fitting it for carers or family members, think about access: a spot near the front door but tucked behind a hedge or pillar often works well. Avoid dark corners where someone could tamper unnoticed, and make sure the safe does not block a door, letterbox, or alarm box.
Use the right fittings and drill bit for the wall
The fixings that come with many key safes are basic, so check they suit your wall. For brick or masonry, a 5mm masonry drill bit and a T30 Torx screwdriver are the common sizes needed for models like the Supra C500 Pro and ark Tamo. The Fitting Pack for C500 & ark Tamo Key Safes includes both, saving you a trip to the hardware shop.
If your wall is pebbledash, render, or very hard engineering brick, drill slowly and use a vacuum or dustpan to catch dust. Never force a screw into a hole that is too small; it weakens the fixing.
Set the combination before you mount the safe
It is much easier to set and test the combination while the safe is off the wall. Choose a four-digit code you will remember but others cannot guess, and avoid obvious patterns like 1234 or your house number. Change the factory default before fitting, not after.
If you are sharing the code with carers, use a code that can be changed easily when a carer leaves. Write the code down somewhere secure inside the house, not on the safe itself.
Step-by-step: fitting your key safe
- Check the wall and mark the fixing holes: Hold the safe against the wall at chest height, use a spirit level to check it is straight, and mark the four screw holes with a pencil. Common mistake: marking holes on mortar joints, which crumble; aim for the centre of a solid brick instead. If the wall is hollow or timber-framed, stop and choose a different location.
- Drill the holes to the correct depth: Use a 5mm masonry bit and drill to the depth of the screw plus the plug, keeping the drill straight. Common mistake: drilling too shallow, which leaves the screw proud and the safe loose. Wrap a piece of tape around the drill bit as a depth guide.
- Insert wall plugs and screw the safe in place: Tap the plugs in gently until flush, then screw the safe to the wall using the supplied screws. Tighten diagonally, a little at a time, so the safe does not distort. Common mistake: overtightening one screw fully before the others, which pulls the safe out of line. Check the safe is firm with no movement before you close the door.
- Set and test the combination: With the safe open, set your chosen four-digit code according to the instructions, then close and reopen the door at least five times. Common mistake: setting the code with the door closed, which can jam the mechanism. Test the code three times in a row before you put any keys inside.
- Add the spare key and do a final check: Place only the spare key or keys inside, close the door, scramble the dials, and try to open it without the code. Common mistake: leaving the safe on the factory code or storing the code inside the safe. Tell carers the code in person, never by text, and change it when they no longer need access.
Product facts
- Wall Mounted Key Safe: The Aidapt Wall Mounted Key Safe has a four-digit combination lock and a rubber seal to prevent tampering. The seal helps keep out dust and rain, so the lock stays smooth, but you still need to set a unique code rather than the factory default.
Wall Mounted Key Safe - Fitting Pack for C500 & ark Tamo Key Safes: The Fitting Pack for C500 & ark Tamo Key Safes includes a T30 Torx screwdriver and a 5mm masonry drill bit. Having the correct bit and driver on hand means you can fit the safe straight away without guesswork or a second trip to the shop.
Fitting Pack for C500 & ark Tamo Key Safes
