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profdant139's avatar
profdant139
Explorer II
May 09, 2019

Screen door latch: don't make this mistake, like I did

Whenever we leave our trailer, we usually just close the screen door and then slam the outer door. (Spoiler alert: that's the big mistake, right there.) We've been doing it this way for 14 years and two trailers.

A couple of weeks ago, we slammed the door, the way we always do. The little handle on the screen door latch snapped off. I had to remove the latch in order to get the screen door open.

I went to Camping World and got a new one. It is tricky to figure out whether you need a right hand latch or a left hand one. Tip: when you stand inside your RV and the door hinge is on your left, then you need a right hand screen door latch. (The Camping World salesperson was very knowledgeable -- I wasn't.)

But the real light-bulb went on when I was installing the new latch. I had a chance to spend a lot of time with the design and the materials and the placement of the components, trying to figure out what went wrong.

Bottom line: DON'T JUST SLAM THE OUTER DOOR against the already-closed screen door, which is what we had been doing all along. Bad idea. It eventually causes material fatigue, and the handle will break.

Instead, when it is time to close the outer door, FIRST latch the screen door to the outer door by depressing the little handle. An angled hook on the outer door then engages the little handle on the screen door latch; the hook holds the screen door handle in a slightly-depressed position, so that the "tongue" of the screen door latch retracts. Once the screen door handle is engaged by the hook, then it is ok to close the main door.

Here are some photos that should clarify the problem. This is what the hook looks like in profile – notice the sloping “nose” of the hook:


Click For Full-Size Image.

This is the handle of the screen door latch, in a “depressed” position, ready to engage the hook:


Click For Full-Size Image.

This is the handle engaged by the hook:


Click For Full-Size Image.

And this, in my opinion, is the culprit – this is the backside of the screen door latch handle, with a little angled cutout. The cutout is supposed to slide down the nose of the hook and pop into the engaged position:


Click For Full-Size Image.

I had never paid any attention to the interaction of the angled hook and the sloping cutout on the backside of the latch handle. Theoretically, these two components are designed to engage the handle automatically, as the handle slides down under the pressure of the hook. In the real world, though, the materials are not tough enough to handle that impact. Eventually, the handle will break.

After doing it the wrong way for so many years, this is going to be a hard habit to break. I have posted a little reminder on the inside of the door lock: LATCH SCREEN FIRST.
  • ReneeG wrote:
    Profdant139. Thank goodness we do that - latch both together then close the door. One word though, our screen latch (that little thing in your first pic) was at an angle on our FW. So . . . guess what happened . . . hubby straightened it out . . . big mistake. It was at an angle for a reason. We couldn't get in, but after much jiggling and slipping a wire in, we managed to open without damaging the piece or door. Lesson learned!


    Also the angle is set by tightening screws in wide slots. The screws get so they won't tighten even with fatter screws so the angle keeps getting "off" in the slots. This can get to where the screen door won't open with the main door. You can reposition the thing and the handle to solve that (for a while)

    The issue remains that they use thin aluminum to screw into and you can't fix the screw holes like you can with wood.

    Similar problem with the screws for the main door striker.
  • Gjac's avatar
    Gjac
    Explorer III
    Thanks for posting this Dan,I never even thought about this before your post, but along the same line if you have the Trimark outer door latch I found it is less wear on the inside latch if you don't slam the door shut but pull the handle out then push the door shut. The inside latch is just a zinc alloy and prone to breakage. I replaced mine twice and when it broke the third time I took it apart and fixed the broken latch with a steel plate. I was not about to buy another one at $100 a piece. Some on this forum carry an extra one just in case of breakage.
  • Now that I have discovered that there is a right way and a wrong way to close the door (who knew??), I have also found that it is much easier to close the door without slamming it -- I swing the whole thing shut and then pull out the big paddle-shaped outer door handle. The door assembly now glides into place, and I release the handle.

    Somewhat less satisfying than a nice loud slam, but it works better.
  • Profdant139. Thank goodness we do that - latch both together then close the door. One word though, our screen latch (that little thing in your first pic) was at an angle on our FW. So . . . guess what happened . . . hubby straightened it out . . . big mistake. It was at an angle for a reason. We couldn't get in, but after much jiggling and slipping a wire in, we managed to open without damaging the piece or door. Lesson learned!
  • profdant139 wrote:
    BFL, that sounds like a serious issue -- what if you can't get the dogs out? Folks with border collies, however, don't have to worry: "Fido, please use a small Phillips head screwdriver to remove the latch!"


    . . . and Rat Terriers.
  • profdant139 wrote:
    BFL, that sounds like a serious issue -- what if you can't get the dogs out? Folks with border collies, however, don't have to worry: "Fido, please use a small Phillips head screwdriver to remove the latch!"


    Yes, we have two of those and two Shelties, four mutts in all.

    What's worse is when the collies figure out how to lift up the bolt and slide it across, so now they can bash on the screen door lower plexiglass part, popping the door open, and get outside! (Main door open, on a hot day)

    It is embarrassing when your dog is smarter than you are. Then he gives you "The Look", same as DW gives you at times. All DHs know that one. She just looks at you, and you can tell she is wondering how come you are so stupid. Luckily with DW you can always counter with the fact she did marry you, so what does that suggest about her own intelligence?

    That does not work with your Border Collie when he give you that same look. That is what the Shelties are for. They restore your confidence. They like you no matter what. :)
  • BFL, that sounds like a serious issue -- what if you can't get the dogs out? Folks with border collies, however, don't have to worry: "Fido, please use a small Phillips head screwdriver to remove the latch!"
  • As a side note to that, dog owners will put a piece of plexiglass over the bottom screen inside, and add a sliding bolt on the inside of the screen door just below the slider opening by the handle.

    The downside is, if you go out intending to close the main door and leave the dogs inside while you are gone, and forget to undo the sliding bolt first. Now to get back in you yank on the outer door and --oops!-- it won't open because the screen door won't open as well, being bolted shut.

    The good news is you can yank really hard on the outer door, and it will come away from the screen door connector. This can't be good for it all, but at least you can get back in!

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