Door opens when another is opened, how to stop?

[nikaiyo2]

So maybe 2 months ago the birth the door closes into broke (not sure what it’s called but photo attached)
So I got a new one from Screwfix fitted it, now whenever I open the other door in the room the door opens, I,presume due to,air pressure changes.

What have I done wrong? At first I thought I had screwed the plate thing in too much so slackened the screws a bit, but that did not help much.

Have I bought a rubbish “plate” thing?

[anonymous-user]

I’d guess the latch bolt isn’t going into the strike plate, so just pops open.

Can you see it through the gap?

May need a bit of fettling to get it to line up properly..

[No ideas for a name]

Striker plate.

I would guess your old one didn't have the tab at 90 degrees, so was just a flat plate with a rectangular hole.
Guessing again, that it is now set slightly too far back so the latch doesn't drop through the hole in the striker plate.
If so, you need to move the striker forwards in the frame a tiny amount.

That or you have annoyed a ghost.

Cross posted with the far better illustrated reply above

[simon_harris]

It is proof the universe is working as it should do… “when one door closes, another one opens”

[Roofless Toothless]

[Jaska]

Is it possible you put the latch in backwards? I've done this before

[wolfracesonic]

Jaska said:

Is it possible you put the latch in backwards? I've done this before

Hopefully you’ve not done this The small metal tab in the keep, have you bent that out too much, it could cause the latch bolt to slide back I suppose, pics would help though.

[OutInTheShed]

Very often the latch doesn't go far enough to enter the hole in the strike plate, or it's too high or low and runs along the edge of the hole instead of going in.
Sometimes the easiest adjustment is to file the hole a bit bigger.
Sometimes the hinges are the issue.
Sometimes draught excluder is stopping the door closing far enough.

[leef44]

Just use some wooden toothpicks or a lolly stick behind the strike plate and screw it tight. That should make it protrude out enough to click in place when the door is closed.

[kambites]

There's three possibilities:

1) The latch doesn't stick out far enough to engage with the new striker plate properly
2) The latch isn't at the right height to engage with the hole in the new striker plate.
3) The hole in the striker plate is too far back in the frame, so the latch isn't reaching the hole to engage with it.

If the problem is 1, you can probably pad the striker plate out slightly from the frame by putting something between it and the frame then tightening the screws back up; or do the same with the hinges to move the door towards the striker plate slightly.

If 2 or 3, you will need to adjust the location of the striker plate or the hole within it. Given that you obviously already have the holes for the screws, the easiest way to do this is probably to file the hole a bit bigger in whatever dimension it's misaligned. Alternatively remove the striker plate, fill the screw holes with filler, redrill them in the right place, and refit the plate.

Depending on the exact geometry, you might be able to resolve 2 by padding out ONE of the hinges to slightly change the angle of the door but if you do this by more than about half a mm, it'll look weird.

[andy43]

Or