Perimeter Security

Measures You Can Apply

Perimeter Security starts at home, but you can’t form a full picture of your home’s strengths and weaknesses from inside it. First assess what the security risks are, once you’ve identified the weak points by viewing you’re home from the outside you can start putting into place your perimeter security or defences, if you’re already at that point and have perimeter security then you can begin strengthening them.

Here are just some examples of Perimeter Security & the Pro’s and Cons along with some security measures you can apply at no cost. You can reduce the security risks today.

Fences & Hedges

Most people tend to go for high fences and high hedges around their gardens, because everybody likes privacy in their own home.

It can act also as a deterrent because thieves’ don’t know what is on the other side and it does stop passers by looking in through the windows, but in some circumstances it can also offer great cover should a potential thief breach the perimeter security of your house.

Nor is a high fence or hedge a serious obstacle to most would be thieves’. You can climb or vault over a six-foot quite easily and push your way through most hedges. Low hedges and fences usually give better protection because passers by can see over them, which makes the criminal more vulnerable. They are looking for opportunity and time. Thieves’ like to get into a place then work away quietly, unseen.

They don’t want to jump over a fence and run and knock the door down in full view. Once the thief has cleared the fence, they have all the cover they need. They can sit there in total seclusion for as long as it takes, especially if the occupants are away on holiday. A high barrier is only effective when it cannot be easily climbed, vaulted, pushed through.

If you do want a high hedge, choose plants that are genuine problem for burglars and thieves’ alike, like Fire horn, which forms an impenetrable barrier.

If the approach to the house is completely open, but overlooked by neighbours, that’s also fine, if there’s no neighbours overlooking yours, the approach increases the risk to you because of the ease of access for the burglar.

Garden Obstacles

They won’t form a permanent barrier but it will slow them down and give you more advance warning.

Remember there are laws in which we also need to adhere to so we cant use minefields or booby traps around your home, but if it’s possible for burglars to run round the back of your property in four or five seconds, think of ways to stop or slow them down, put a fence panel or even place a few large flower pots to block the direct route and force them to weave and slow down. Most people think in terms of fences and alarms but cleverly positioned large objects like garden furniture can be just as effective.

Deep gravel is also a good deterrent to a burglar or thief as it slows them down and gives noticeable sound as they walk across the gravel. Just like we did in the military you’re putting things in place to give you an early warning of anyone approaching. Remember that you’re not trying to catch them in the act, nor to get into a confrontation with them. All you want them to do is pass by your house and go elsewhere. When you’ve sorted out your own personal security issues then we can turn the problem of securing your neighbourhood as well, but for the moment be selfish.

If a burglar is going to break into somewhere near you, make sure its not your property that suffers, if you’re neighbours are not prepared to put adequate security measures in place by doing some basic research then it invites and attracts criminals to your neighbourhood for easy pickings, at least you and your family are safe you can share your knowledge with them over a friendly chat or coffee, whether they take your advice is down to them as an individual.

Movement Security Sensors

Light Security Sensors that respond to movement, lighting up the outside of the house, are a very good cost effective investment.

The sensors should be sited so that they’re activated as close to the perimeter of your property as possible and they must cover the whole of the house, so that there are no dead spots.

I looked at a house for a client who had several lights fitted, but as i studied it i could see several points where you could reach the house without triggering them by moving between the sensors.

When you are installing lights, you must check from all points around the house that the sensors merge together giving you maximum warning. You should often check external light sensors at different times of year. Lights may work perfectly in winter, but in summer the foliage on trees may prevent them functioning.

These days when You buy a new house, you will find that 99%  of houses will already have an intruder alarm system installed.

Garages & Outbuildings

If it has a connecting door to the house, once thieves have broken into the garage or outbuilding they have plenty of time to force entry completely unseen.

They also have plenty of tools at hand; people always keep tools in their garage or shed. Burglars don’t carry around house breaking tools like back in the old days, now they break into your shed or garage and yours your tools to break into your home.

  • Garages and garden sheds should be as secure as the house itself.

  • If the garage is attached to the house, it should be secured from the inside.

Just locking up and over doors are not strong enough as the locks fitted to them are not very strong at all, they must have a couple of dead bolts on them so that even if the lock is forced the door won’t open.

Doors & Patio Doors unlocked-doors

Good locks are an essential requirement, but you must keep a sense of proportion about your locks and all your other security precautions because they’re relative to everything else about your home. There’s no point in putting a three inch deadbolt on your plywood door or fitting a £600 door on a softwood frame, the door will stand but the frame will give way if forced.

You must also be sure of the effectiveness of any system you buy. A recent trial that was conducted was on an armored door with innovative locking system.

It costs £1200 and was designed to withstand 30 minutes of attack, to everyone’s astonishment; the first test was completed in less than 30 seconds using a basic sledge hammer. The test was repeated several times in case the first had been a fluke, but results were consistent, the door was about effective as £1200 paper bag.

In most tower blocks the doors and door frames are so weak that the only effective barrier is to fit an Iron Gate across the whole door way, old but effective. Even then thieves can and do break into break into a less well-secured flat and smash their way through the breeze block wall, “shocking” but true.

Most houses have two doors; the backdoor should be secured with a key and at minimum two deadbolts. It wont stop someone wielding a sledge hammer, but doing that is going to attract a little bit of attention of as we discussed earlier it can happen’.

On the front door you need a chain to allow partial opening and both a good Yale type lock and something like a Yale deadbolt. There should also be a light over the front door or peep hole if you do not have close circuit television installed.

People often go out of the house swinging the door shut behind them, yet at some times during the year when the weather has been extreme the wood may be swollen or warped causing the door not to fully lock shut.

If you slam the door behind you n0t checking if it’s correctly secured you could be issuing an open invitation to a potential thief or burglar. Pull the door closed to catch it on the Yale lock and then operate a second lock, a key operated deadbolt. The locks should not be sited close together, nor by a window in case a thief smashes it and opens the lock. On any glazed external door, consider fitting wrought iron to the inside. It does not look obtrusive, cost only a few pounds and stops anyone from breaking the glass to get at the locks, which is a favourite way for thieves’ to get in.

Even if you hear the glass breaking, its too late, because they’re already in. Patio doors must be secured with extra locks on the bottom, most patio doors these days have extra locks fitted; if not you must do it yourself.

Patio doors are installed by being levered up with a couple of shovels and dropped into a track, if you don’t secure them correctly thieves’ can carry out the operation in reverse and lever them back out, especially if you’ve left out a couple of spades in the garden, it would literally take seconds for them to gain access but only takes a few minutes to prevent.


There’s no point in securing your doors if you don’t do the same to your windows and “vice versa”.

They need to be fitted on the inside with deadbolts so that even if the window is broken and the latch undone, it still won’t open.

If you haven’t got it and can afford it, double glass is far more secure than single glass, because it’s harder for a thief to breach.

If you’ve got windows near drainpipes, fit a steel mesh around the pipe around the height you can reach, to stop anyone scaling them. One window within the household is routinely left open everyday in most houses.

In many of those houses the bathroom is over the garage, making the open window an easy access route, never under estimate the abilities of a burglar.

You may leave a small window open thinking a man will not fit through it or could an 8 or 10 year old child, again in modern times there is no specific burglar, many burglars now use small children to get in through tiny windows, remember this is seen as a professional profession to any would be burglar or thief, the child once inside would then go and open the door for the burglar to get in.

You must remove the opportunity by keeping the window closed and put locks on it, or if you must have it open to release condensation or bad odours, then restrict the aperture with a device which is sold at most hardware stores, or by improvising with a bar across the inside or even a nail.

House Keys & Car Keys

The best door and window locks in the world will not be the slightest bit of use to you should you lose the key.

People leave keys for their kids hidden in cracks in the wall and in flowerpots, on a ledge or even under a stone, etc, it goes on. Yet if you trust your kids to pick up a key from under a stone, why not just give them a key in the first place?

If you put a key under a brick, you’ve no longer got control of the key; it’s controlled by the brick. Burglars and thieves’ know the obvious places to hide keys and since people tend to hide them in places that are easy for their children or relatives to find, the odds are that the burglar is going to find them as well.

Apply some cost free common sense.

Car Keys

Car keys are another desirable target, thieves will target you for your car keys alone.

We often keep our car keys in the same place – kitchen, lounge or hanging on a hook on the wall. As human beings we are creatures of habit, you’r habits and routine may prove almost as damaging to you.

Burglars may not know the specifics or exactly where the car keys are kept  but they know enough about human nature to know where to look.

The best place to keep your keys is in your pocket but if you must keep them in the kitchen at least keep them out of sight. Remember the longer the thief has to search the more likely he will give up.

Please remember Security measures don’t have to be costly, ugly or obtrusive.

Having Perimeter security is vital.

Two prime weaknesses on a house are easily accessible windows and unsecured doors.

Ok so you’re probably thinking that cctv will do the job, all cctv provides is pre warning on someone’s arrival and the recording of data footage on their ventures within your property, which is great for viewing pleasure but unfortunately does not prevent a burglar from getting in.

Remember you’re thinking last line of defences here and cctv will not prevent you’re home from being broken into.

It depends on the pro’s and con’s for the burglar and going back to if it is all really worth while breaking in, you also have to take into account its quite easy for a burglar to put up a hood or don a mask evading cctv capture.

So for now forget the deterrent, having your basics strengthened like your windows, doors, garages etc, is vital, because if a burglar is at your door or window then your deterrents have failed and it’s too late.


We have gone over some basic security measures that are cost free and very effective measures which you can apply now, however with every example given you would be foolish not to have some sort of surveillance equipment installed into your property, the great thing about modern times is security technology, “as we have already discussed” is reasonably affordable giving us more choice of cctv security systems and other related security equipment,  if you value what you what possessions you have and more importantly the safety of yourself and family you should acquire one soon.

Remember to evaluate the security risks before purchasing expensive security equipment.

I have had cctv in place since i had my home broken into and my car vandalised, ‘I haven’t had a problem since’,  no one likes to be recorded, especially if you’re a burglar or thief, evidence is a key factor in securing a conviction of a thief who has broken into your property, the main purpose of having your cctv installed is that you want people to know you have it installed as to act as a detterent.

Cctv covers every security vulnerability of home security.

Security Concerns has put together for you some recommendations which include, cctv systems, light security sensors and detectors we currently have installed within and around our property.

You will find it most comforting just by applying common sense and some of the security measures above, also you will have greatly increased you’re chances of not becoming a victim of burglary and theft..

Stay Aware, Stay Safe

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