How deep does a rat wall need to be?

How deep does a rat wall need to be?

So How deep does a rat wall need to be? Rat walls are a simple but effective method for preventing rats from burrowing beneath patios and other outdoor structures. When most people think of rats breaking into people’s homes, they imagine rodents climbing through open windows or scurrying up drainpipes. But rats are also excellent diggers, capable of burrowing beneath walls and other barriers standing between them and food and shelter. Rat walls are easy to build; they usually don’t consist of anything more than a metal mesh attached to the base of a structure.

How deep does a rat wall need to be?

While rats are excellent diggers, they can only burrow so deep beneath the surface. As a result, rat walls don’t need to be very deep to be effective. For most structures that sit on the ground, a rat wall only needs to be around one foot deep to be effective. However, the wall needs to include a 90-degree outward turn at the bottom to prevent rodents from burrowing under it and rendering it useless. For a rat wall 1 foot deep, an additional half-foot of mesh should be enough for the horizontal portion.

You can always make your rat wall deeper than this if you want to make absolutely sure that rats won’t be able to tunnel under it, but a depth of one foot should be enough if the wall is properly constructed. Rats usually don’t burrow more than 1.5 feet beneath the surface, so they are unlikely to dig beneath a wall of this depth. If it’s essential that rats can’t make it past your wall, you might want to go deeper than one foot. But for most people, this will be enough to protect whatever lies beyond the rat wall.


No one wants to deal with bugs, rats, micecockroaches, flies, textile pests, insects, wasps, hornets, or bee control and ants in their house or business.

Pest infestations should be addressed as soon as possible, since if left unchecked, they might spread rapidly and cause structural damage to your house, health risks, lots of stress or even a fire danger.

At Bon Accord, we provide a full range of home pest control services as well as the Bon Accord Helpline, which allows us to deliver our clients with the level of service they require when dealing with rodents, ants, cockroaches and other infestations.

We offer a full range of services from basic to expert, ranging from a self-service solution with all the tools you’ll need to DIY treatments, supported remotely by one of our technicians to our premium service in which one of the specialists performs the whole treatment

Karin HarndenKarin Harnden
17:14 05 May 24
We thought we had bedbugs but could find no evidence apart from what we thought were bites. I called Bon Accord and Gabriel was there within a couple of hours. He told us we had carpet beetle. Finding the evidence and showing us photos of the skin reaction which was exactly what we had. He advised and returned at a time to suit us to spray which was done thoroughly and efficiently. No sign of the little critters returning. Thank you Gabriel.
Luiza LoboLuiza Lobo
21:02 11 Apr 24
Gabriel went above and beyond. He is extremely knowledgable and very efficient at what he does. The results were outstanding. Nothing is too much for him. Delighted with his professionalism and work.
sam zsam z
19:11 03 Apr 24
Top-notched pest control service!! Went above and beyond to eradicate the rats from our property. Gabriel even offered to further investigate the infestation issues for our neighbours. We found him to be extremely professional and easy to work with. We highly recommend Gabriel to anyone in need of pest control.
23:29 02 Apr 24
Gabriel provided great service , responded quickly on an emergency for pest infestation, professional and friendly. No more pests at home.
Felicity GrayFelicity Gray
21:53 02 Apr 24
Gabriel was absolutely wonderful, a real life saver when I found a mouse by my bed at 10pm. He came in less than an hour and was able to catch the mouse and put my mind at rest so I could go to sleep! Highly recommend, fab service and lovely people.
Med KashaniMed Kashani
10:54 24 Feb 24
Gabriel turned up with an hours notice one evening and immediately identified the issued. He works efficiently and professionally throughout with timely follow-ups to ensure the problem was resolved. Once completed he was kind enough to continue to check in to see that the issue had gone. Having had Rentokil previously that spent two years doing very little this was a complete breathe of fresh air and solved the problem in less than two weeks. We are grateful and would highly recommend his services.
Nesma TalaatNesma Talaat
20:26 20 Feb 24
We were lucky to have found Bon Accord, they responded very fast to our request and Gabriel was very helpful and informative. He made several visits and did his absolute best until the mice problem we had was gone. Highly recommended.

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