DAP flashing / gutter sealant as seam sealer?

[El Jefe]

http://www.dap.com/3point0/gutter_and_flashing.html

i wanna hear the technical reasons why this type of sealant can / cannot be used as body seam sealer. From reading the info on its properties, i gather that it is:

1.paintable
2.heat resistant
3.dries plyable
4.designed to be used on metal surfaces
5.waterproof once dry

but most of all $$Cheaper$$ than the autobody shop tubes.

-Please comment-

 

[66broncofan]

I'mbe interested in the results of this thread - I think it is a good question.

 

[baglock]

It's "paintability" is most likley based on Latex house paint. I would doubt any compatabililty with good automotive paint. Pay the extra money and buy the proven stuff or risk screwing up a good paint job. Just my $.02.

 

[u10072]

I think the last reply was pretty spot on. Latex paint sticks to everything and is a very thick coating where automotive isn't. Now with that said you might do a test panel and just find out?? Its over time that I think might be the issue. My guess is that for the extra $15-$25 its just not worth the risk due simply to the high cost of automotive paint. With that said however if you were using it in a place like under the dash on the firewall - that would be a perfect place to do a real world test-- along the rear body seam seems to be way too risky.

 

[El Jefe]

It's "paintability" is most likley based on Latex house paint. I would doubt any compatabililty with good automotive paint. Pay the extra money and buy the proven stuff or risk screwing up a good paint job. Just my $.02.

good point, yet is that how aluminum siding and or gutters are painted? with straight up latex paint? or do they have to be primered first? if so , is the house paint primer also latex based?

 

[baglock]

is that how aluminum siding and or gutters are painted? with straight up latex paint? or do they have to be primered first? if so , is the house paint primer also latex based?

I don't know much about aluminum siding, but I'm sure they don't use $200 per gallon PPG automotive enamel. I just think it's a bad idea unless, as was said before, you try it in a non visable area.

 

[66ALRIDE]

90% of the time you get what you pay for? Ask yourself this question, is the Bronco worth paying the extra for the automotive grade or not?

 

[El Jefe]

I don't know much about aluminum siding, but I'm sure they don't use $200 per gallon PPG automotive enamel. I just think it's a bad idea unless, as was said before, you try it in a non visable area.

you'd be surprised at what some people think having the "automotive" word slapped on entitles them to mark up prices...

i guess the 'you get what you pay for' has a very strong component of 'it's worth what youy pay for'.......

i will try it on a test panel and see how it goes..

 

[willtel]

I wouldn't do it. 3M seam sealer is about $15 a tube and you shouldn't need more than two to do the whole Bronco. I used almost a tube on my drip rail. That DAP product is listed as low VOC and auto paint is anything but, you don't want your sealer to react when you start spraying solvents onto it.

http://www.tcpglobal.com/3m/itemdetail.aspx?itemno=MMM+8300