How to bolt a large double-leaf iron garage door

Sorry to bother you. They tried to force open the iron door of one of our garages. They climbed over the courtyard gate, cut the first padlock, then broke a window and tried to force the door open by hand, fortunately in vain. I had made hook and loop latches with pins, and I had installed eyelets with a large padlock. Since I can't install alarms or cameras, could you suggest a system to better lock and barricade the door? It's a minefield with bombs. No, clearly. Thank you. Sorry to bother you. I've secured the glass windows with iron bars made from 20 mm flat iron. Thank you.

 

 

 

Iron door dimensions:
Total length 4 meters, height 4 meters, double-leaf, up to 170 cm from the ground. It's made entirely of 3 mm thick iron with T- and L-shaped iron for the frame, approximately 35 mm. The door leaf is 5 cm thick. Above every 43 cm are windows up to 170 cm, with the last 60 cm at the top closed in sheet metal. The windows are 48 cm long and approximately 43 cm high. Thank you. I look forward to your advice. Sorry for the inconvenience.

That's a tough one Angiolino, it's really hard to keep determined thieves out. I don't suppose you can have a dog in your garage. 

There are reasonably some effective ways to protect the lock from cutting or breaking, below is a picture of a padlock guard that prevents bad guys from using bolt cutters or cordless grinder to cut the hasp.

If I'd known you were building a 2 leaf gate like that I would've suggested using square tubing for the horizontal member between the lower section and upper one with the rectangular pieces and make a long square steel bolt that slid 1m into the other gate leaf and a guarded padlock the bad guys couldn't get cutters to. 

I'm sure someone else on the forum has good ideas too.

Frosty The Lucky.

35mm L-and-T frame. Sorry to bother you with any problems. Are you suggesting installing a latch to secure the doors to the ground? The lock and internal padlocks. To access the shed, you have to open a side iron door with a large lock. Therefore, I wouldn't have time to look after the dog. The shed is a storage area, a space we keep for convenience. Perhaps they thought it was uninhabited and wanted to break down the door to collect recycling to take away. Who knows, thanks.

 

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I said that because I believed a dog was not practical and would be unkind to the dog being locked up alone all the time.  

I was suggesting a way to connect the leaves of the gate in a way that was too strong to break without hard work and the padlock guard so they couldn't cut the lock off without having to cut the box off and those boxes are made of hardened steel and hard to cut off without noisy equipment.

The photo of the lock guard I posted is from an ad at Amazon I think and just an example. In the pic it is protecting a lock on a connex shipping container or semi truck box trailer door. 

Drop bolts into the ground work well but if they put a chain on the top of the gate two or three guys might be able to bend the gate enough to pop the bolts out of the ground. Or they might bend them enough you'd have to cut them to open the gate. 

A bar latch like you pictured is more what I was thinking but long enough it wouldn't bend without breaking the gate itself and mounted about mid height so trying to pull the gate open would not have a leverage advantage, they'd have to literally tear the gate open. 

Petty thieves are thieves because they're too lazy to get a job or too stupid to hold one. If you make breaking in too much work they'll look somewhere else for easy pickings. Unfortunately if the frame is made of 3mm steel it's already kind of weak. Maybe an old fashioned drop in bar between the gate leaves and a protected padlock. If you made the bar long it would spread any forces over a wide area on the gate making it harder to bend or break the gate and if the padlock was near the center with a guard on it so it would be hard to cut off it would keep the bar down so it couldn't be lifted off and they'd have to break both sides of the gate at once. 

Maybe slide in bolts to the ground with pad locks too. 

Mostly are just things to think about, I've learned what you have available to work with is very different from what I have so many times easy for me is almost impossible for you. 

We'll work something out though.

Frosty The Lucky.

 

Thank you for your precious time. Would you be so kind as to draw me a freehand drawing with a simple example? Thank you. I'm having trouble interpreting your brilliant ideas. The point is that they've now equipped themselves with cordless drills and cordless grinders. Once upon a time, burglary tools included a hammer, a lock pick, a carpenter's crowbar, or perhaps other adapted tools from a plumber. If the job was big, they might even bring a cutting torch. Today, batteries make their job easier. In Italy, they use large bulldozers or excavators to rob banks. First, they steal the bulldozer, then use it to break through the walls of banks and jewelry stores and take away the safes. Thank you again for your valuable advice. I'm sorry if I'm being annoying and bothersome. Thank you for your availability and professionalism.

 

 

 

 

 

 

 

http://sdelayzabor.ru/wp-content/uploads/2016/02/vertushka.jpg

https://www.amazon.it/Amazon-Basics-Spranga-regolabile-nero/dp/B07PGKXD27/ref=pd_lpo_d_sccl_3/522-4952938-5085355?pd_rd_w=AP9Iv&content-id=amzn1.sym.deb055ce-ac58-4c38-8939-8e74c8af4666&pf_rd_p=deb055ce-ac58-4c38-8939-8e74c8af4666&pf_rd_r=1X8A0P3JEAKG5BQWMWC4&pd_rd_wg=KDuGM&pd_rd_r=fbe698bc-d5bb-4797-89f5-c5b8a40d29eb&pd_rd_i=B07PGKXD27&th=1

https://www.fernanditalia.it/barre-di-sicurezza-per-imposte/384632-barra-di-sicurezza-per-persiana-in-legno-3150260089134.html?srsltid=AfmBOooPG3FHd3mxgqa1_e8q_6D21mWfJsTYivs5LbpElAv6MqO8Yz13

 

Sorry if I insist if I add an additional bar pole like a slanted strut that keeps the two doors of the door pushed and adhered, what solution do you suggest thank you sorry if I'm petulant, unfortunately I can't put a feline guard maybe a lion or a hungry tiger thank you

 

 

Leaning door bars like the top picture are effective if the thief can't get in to lift it off. 

Same with the horizontal steel bar.

The question is how are you securing the door You have to enter to open the utility doors?

Bummer about not being able to buy or rent a tiger, all you'd need then is a way to squirt fish oil on the bad guys when they broke in. Even if it just licked the yummy fish oil off tigers have rough tongues just like a house cat and they're pretty smart. I'll bet a tiger would happily rip the thief's clothes off to lick every bit and memory of yummy fish oil our of every nook and cranny. 

It gives me happy butterflies just thinking about a  thief being found licked raw and crying  while BIG kitty protected his next snack. 

Frosty The Lucky.

Sorry if I bore you, I bought the iron to make the grates on the windows, I changed the locks or put a large wooden beam diagonally to keep the shutters closed, other than recording the sound of a tiger and making it heard every now and then I don't know what to do, sorry if I'm boring, caution is never enough

 

 

 

You're never boring Angiolino.

I was joking about the Tiger and only the truly stupid will believe a "Watch Tiger" warning sign. If you put up something more believable the thieves might go somewhere else.

Many years ago I saw a beware of dog sign with a picture of a rottweiler with bloody fangs smiling at the camera. The warning said, Keep out! If not pet Bruno, chasing trespassers makes him hungrier. Well, it said something like that it's been a long time since I saw it.

A recording of a large dog sniffing and occasionally growling works better than barking. It doesn't take long before word gets out the barking is fake but a growl you have to almost lean against the door / window to hear is effective a lot longer.

Best of luck with the thieves and don't hesitate to ask for ideas. The idea of catching a thief or maybe worse makes me happy.

Frosty The Lucky.

Antonio, the shop i share, we have each wing with pins at the bottom and the top so they are already fixed in place and 2 long beams that lock the doors togheter and the walls.

But we have a small side entrance (a door) so the big door is locked all from the inside.

Also some flaps that go over the gaps, so they cannot use a saw to cut the pins and beam from the outside.

Not really pictures. Hope my explanation is helpful

My mother's family came from Calabria. They came here in 1929. From the stories I remember they always managed to take care of the PITAs. It as not nice,  but effective. BUD

On 8/26/2025 at 2:28 AM, angiolino said:

https://www.amazon.it/Amazon-Basics-Spranga-regolabile-nero/dp/B07PGKXD27/ref=pd_lpo_d_sccl_3/522-4952938-5085355?pd_rd_w=AP9Iv&content-id=amzn1.sym.deb055ce-ac58-4c38-8939-8e74c8af4666&pf_rd_p=deb055ce-ac58-4c38-8939-8e74c8af4666&pf_rd_r=1X8A0P3JEAKG5BQWMWC4&pd_rd_wg=KDuGM&pd_rd_r=fbe698bc-d5bb-4797-89f5-c5b8a40d29eb&pd_rd_i=B07PGKXD27&th=1

 

https://www.jewelerstoolsmall.com/Ring-Engraving-Machine-117.html

Sorry if I insist if I add an additional bar pole like a slanted strut that keeps the two doors of the door pushed and adhered, what solution do you suggest thank you sorry if I'm petulant, unfortunately I can't put a feline guard maybe a lion or a hungry tiger thank you

 

 

This tool looks pretty good.