05-02-2014, 01:17 PM
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#1 (permalink)
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Liberty Lover
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rubber strips on roof ~ fill & paint?
I'm planning to paint the roof of my civic, and there are two rubber strips, that are not absolutely flush with the roof. Could I fill the grooves with something like bondo (instead of the rubber), and smooth over the top for painting? Please let me know your suggestions.
Last edited by j12piprius; 05-02-2014 at 02:48 PM..
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05-02-2014, 02:31 PM
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#2 (permalink)
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Drive less save more
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I think it will best to leave the rubber unpainted, the rubber will flake paint threw expansion and contraction on the softer surface(may take 3-5 years to crack)
I suggest to tape over the rubber neatly before painting the car, to avoid disappointment.
Paint on rubber can look bad as well
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05-02-2014, 02:39 PM
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#3 (permalink)
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Liberty Lover
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the rubber would be gone
Sorry for not being clear. My idea is to remove the rubber, sand and fill the grooves with something like bondo, sand smooth and then paint the roof. The rubber is easy to remove.
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05-02-2014, 02:49 PM
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#4 (permalink)
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Master EcoModder
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I could be wrong, but I think those grooves/rubber strips are to make a sort of "rain gutter" channel, so the majority of the water from the roof doesn't run into the door/window when opened. Depending on the amount of rain you get, removing those may cause an unwelcome surprise. Aerodynamically, I'll bet their effect is so miniscule, you couldn't even measure it. - just my guess, though.
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05-02-2014, 02:59 PM
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#5 (permalink)
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Master EcoModder
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Why are you painting the roof? Looks? Rust?
Plasti Dip would cover both the painted metal and the rubber/plastic.
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05-02-2014, 03:00 PM
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#6 (permalink)
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cooling the roof
The rubber does form a slight groove, perhaps 1/8" lower than the surface. The rest of the groove is much deeper. I'm planning to paint the roof white for more coolness in the summers, and having the rubber on there would be kind of annoying, but I'll leave it in lieu of a better alternative.
My main purpose is cooling the roof, with a slight benefit of smoother air flow.
Last edited by j12piprius; 05-02-2014 at 03:10 PM..
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05-02-2014, 03:02 PM
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#7 (permalink)
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Master EcoModder
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I would NOT fil and paint.
1. Too much filler needed and will crack with time
2. part of the gutter system for water flow.
3. waste of time for aerodynamics.
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05-02-2014, 04:24 PM
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#8 (permalink)
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Master EcoWalker
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The groove is where the top and side panels are welded together. It does flex a tiny bit; hard filler will crack.
I don't think it really does, or should, function as a drain. I believe the strip is supposed to keep the water out, but it too gets rigid and leaky over time.
My old '85 Civic developed a leak right there; took the strip out, botch repaired the leak with some rust killer, glass weave and resin (it was on its last legs anyway, rusting structural parts and all) and put the strip back in. Fixed that one leak.
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05-03-2014, 12:44 AM
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#9 (permalink)
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Master EcoModder
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Seriously, Plastidip the roof white in the summer and peel it off and spray black in the winter.
It will form a water barrier so it doesn't rust out under the rubber.
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05-03-2014, 12:52 AM
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#10 (permalink)
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Liberty Lover
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Quote:
Originally Posted by freebeard
Seriously, Plastidip the roof white in the summer and peel it off and spray black in the winter.
It will form a water barrier so it doesn't rust out under the rubber.
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That's an interesting idea. There's a moon roof, with radiant barrier foil clipped underneath.
Would plastidip hold to the glass?
I'm planning to leave the rubber and paint the roof white. It's not that cold here in the winters.
Thanks for all the comments. 
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