How much give/spring/bounce should an external door have if pushed in the corner from outside?

[RightEarlobeBreath]

I’ve just noticed that if I push the outside of one of our external doors in the left bottom or top corner (the side with the lock on), from the outside when the door is locked, the door will push inwards slightly, enough to make a visible gap of a few mm. I’m worried now that this is a security risk. Should the door be able to do this?

We have a lock in the middle of the door as well as two more lock bits that slide over when the handle is lifted up (one halfway between floor and main lock and the other halfway between the main lock and top of the door).

I know realistically that if someone wants to kick a door in or pry their way in, they will if they want to get in badly enough. I’m just worried now that this gap would be enough the get a prying tool in or is a sign that the door would kick in easily.

Can anyone advise?

What is the door made of?

Photo would help.

None!?

It’s a composite door I think. It’s like white plastic with a grey metal type layer in the centre. Sort of like a sandwich of layers.

none

photo would help (faces and edges)

I would not expect a composite door to flex much, but all materials bend, even reinforced concrete (but not much).

As you have multipoint locking, you should engage all rollers/hooks/bolts for best locking.

Plastic doors I am not fond of because it is an inherently weak and flexible material, which is why it is festooned with multiple bolts and hooks.

In some cases it may be possible to fit a new (better) multipoint mechanism, they are available as repair parts and not very expensive, but this is not my field.

If you ask around you may get a personal recommendatrion for a local door-and-window repair specialist, there is bound to be atr least one, because plastic doors and windows are somewhat troublesome.

My own preference is for the Saracen system because it is available with a five-lever lock rather than a Eurocylinder, but opinions differ.

sorry, I was thinking of Vectis, not Saracen.