How important is the plastic on the doors???

infamousRNR

Senior Member
this plastic on the doors is for weather purposes correct? (i.e. dust, dirt, water), but how important is it to be there?????

is it absolutely mandatory? or?>???


when replacing:
what is the sticky black stuff called that adheres the plastic to the metal door?

what type of clear plastic is used?



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I think the plastic is more to keep moisture, dust and dirt from the inside of the door out of the cab. You should be able to get any clear poly from a say Lowes, Home Depot or the like. As for the black stuff, just some silicon type sealant should be fine.

As to your question, I don't think its 100% vital to have the plastic on there, but you will most likely start to notice more dust inside the cab, also the possibility of mold growing on the back of the door panels.... Better to keep on there or replace it with Dynomat or some other type of sound proofing material.
 
Probably not mandatory, but I like to have it on there. For replacing it I would think any thick plastic sheeting you can get at Lowes would work. I think that's what my dad and I used when restoring the interior on his '69 Torino. For the adhesive I don't know exactly what it is, but it seems similar to the Butyl Rubber that people use when resealing their retrofitted headlights, in that it can be reused, but Butyl requires heat to become pliable.
 
I've been told that it's to keep flying nuts, bolts, other odds and ends from getting into the doors as it's going down the assembly line, but also that it's a moisture barrier like others have said here. You decide. I've always put it back on.
 
It is also intended to keep elephants out of the vehicle. So far, it is working perfectly for me. Not even 1 elephant has managed to get in the truck with the plastic in place. For that reason, I would keep it on there!
 
When I put sound deadening material in the doors, I replaced mine with Mylar. I had a bunch of those cheap emergency space blankets sitting around so I used the older plastic as a template to cut out new ones and used the existing adhesive to put it on, I figured it might add some insulation and its a lot more tear resistant than plastic. Who knows if its insulated it any better due to the sound deadening but I figured it would not hurt anything either.
 
LOL - So far it has kept the Tuskers away, I usually worry more about water buffaloes but I think the shine will take care of them too!
 
It's a moisture barrier, so kind of important. Not unusual for water to get in the door which is why there's a drain hole at the bottom.

And apparently to keep water buffaloes and elephants out too. Learn something new every day.
 
It's a moisture barrier, so kind of important. Not unusual for water to get in the door which is why there's a drain hole at the bottom.

And apparently to keep water buffaloes and elephants out too. Learn something new every day.

Doesn't do anything against muskrats—ask me how I know...
 
i threw mine away on one of the doors because i had to take the entire thing off and it was getting way too stretched out....


so really interested in the type of clear plastic and the adhesive.











- looks like i got some suggestions, amongst other , more rare reasons to keep it on or in my case replace it. primarily I'm just trying to keep the neighborhood cats from getting in....



. . . .
 
Doesn't do anything against muskrats—ask me how I know...

I like muskrats! Except the ones near my place stay in the creek and not in my car doors. Turkeys however, there's a few that seem to have a deep hatred of car tires. Must be PTSD, maybe they witnessed one of their buddies get blown to bits by a car.
 
It is also intended to keep elephants out of the vehicle. So far, it is working perfectly for me. Not even 1 elephant has managed to get in the truck with the plastic in place. For that reason, I would keep it on there!

I wondered who was driving that Runner loaded full of peanuts...
 
Don't skip the plastic

If you live in a wet climate, I would say it is very important for keeping the rain out. Water will come in through the window seals and leak into the door. At the bottom of the door are drain holes and the plastic keeps the moisture out of the cab. It will keep the dust out too.

You can use any thick plastic and attach it with butyl rubber. I don't think anything else will work. Don't waste your time trying something else. I bought a very expensive piece of plastic from Toyota to replace mine but I don't think I would do that again. I would simply use thick plastic sheeting I cut to the right size.

It took me months to chase down a leak in the back hatch because the guys at the autobody shop were cheap and sloppy when they put the plastic on the new door.
 
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If you are looking for a good sized sheet of plastic that's thick, look for plastic paint dropcloths of 5 mil or thicker. Would be enough for several doors.
 
Butyl tape and 3mil plastic is what I replaced mi e with when I swapped doors.

is there a specific brand of butyl tape or thickness you used>//???..

i forgot i had removed this plastic when i started this thread and El Nino is in full effect and i have moisture in the vehicle now :sobbing:

I'm looking to address this ASAP as i have received some new POLK speakers for the doors..

there are a lot of search results that come up when i search butyl rubber/tape
 

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