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I think the tarpaper glued to the door FRAME is designed to stop moisture and air flow from entering the interior. Looks like your stuff should do a great job keeping moisture from damaging the door panel.

I sure do like the magnets.

Yea, it seems like home builders are interested in building something that will last 50 years anymore. We used something similar called Redguard for sealing our shower. Same basic concept. I doubt the auto manufactures would use it though since its about $50 a gallon.  

I like the magnets too and used them on my car. They worked out great. I still have the paper and strip caulk holding the waterproofing paper!!

Just a curiosity question.

Do ya have both door panels set up the same? (Polarity wise)
If not, they would stick together and might be difficult to separate.
Just food for thought.

Just my OCD talking.😜

Great idea Ed!

Last edited by Nos681 (10/22/2019 3:46 PM)

You never want these magnets to approach each other. I only use one set glues onto the door panel. No magnets are on the car. 
I used these magnets. https://www.amazon.com/gp/product/B072KDBJWC/ref=od_aui_detailpages00?ie=UTF8&psc=1​

Did you use 15 per side?

Cjpony USED to have the plastic barrier.
I recently ordered a set and expected the plastic and got the tar paper.
Was disappointed.
Didn’t want to deal with restocking and shipping fees.

Last edited by Nos681 (10/23/2019 7:28 AM)

I would imagine....just so they 'attach' to metal/arn would be close enough.
.
With my 'dealings' with those neodinium  maggots  You got enough on there to trap slow moving cars that try to pass you !!
Once installed I doubt you will be removing the panel without mucho difficulty.
6sal6

I have to ask - you're mounting the magnets on what amounts to cardboard.  I'd have thought that they'd be prone to ripping out (just like those nasty little clips are prone to do), regardless of what adhesive you used to put them on.  Wouldn't it be better to glue the magnets to the metal of the door and glue or otherwise attach ferrous metal (like galvanized flashing) to the door panel?  Maybe the upholstery could be peeled back a bit in a few places and the metal folded over the edge of the cardboard panel ... or maybe not.  I don't know - just curious 

Last edited by John Ha (10/20/2026 10:13 AM)

John Ha wrote:

I have to ask - you're mounting the magnets on what amounts to cardboard.  I'd have thought that they'd be prone to ripping out (just like those nasty little clips are prone to do), regardless of what adhesive you used to put them on.  Wouldn't it be better to glue the magnets to the metal of the door and glue or otherwise attach ferrous metal (like galvanized flashing) to the door panel?  Maybe the upholstery could be peeled back a bit in a few places and the metal folded over the edge of the cardboard panel ... or maybe not.  I don't know - just curious 

I'm confident that the magnets will survive way better than the old clips. Those things used to be nasty and would tear the board apart.
The magnets are only there to hold the door card against the door. I will still always be gentle with removing them and I no longer need a tool to jimmy the panels off the door.
Here is a photo of my old door card with tape trying to hold it together after multiple removals and the clips tearing the slots.

Mine have lasted since 2013 and no issues with the magnets or the Aqua Defense allowing the moisture to leak through to the particle board like fibers. It's been great.