A lot of talk about using POR15, but only a few comments about shelf life. I ran into this conversation on another forum and thought some of you guys may find it interesting. I copy/paste most of the thread and put the pertinent comments in
BOLD text.
Por 15 will dry to a glossy black finish, however if exposed to sunlight it will change color. It sticks tenaciously to rusted metal. If you are applying it to bare clean metal then a metal etching solution that por 15 sells must be applied or it will not stick.
It will not stick to galvanized metal without the cleaner and etching solution applied prior to the por15 being applied. Also once you open the can it will begin to set. it does not have a solvent in it as a paint does. The por15 sets when it contacts the moisture in the air. If you plan on resealing the can to save unused material then you must place several layers of plastic kitchen wrap between the lid and can or you will nver seperate the two again, sort of like" till death do us part".
Iwould recommend getting multiples of their small cans , less waste that way.
Tom M
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Re: POR 15
Author: george (---.ma.dl.cox.net)
Date: 03-02-05 06:30
I have had good luck sealing POR cans by not installing the lid, rather use the foil type aluminum duct tape. four strips or so 4" long will seal the top. The adhesive is VERY sticky . press tightly allaround the lip surfaces. POR 15 also sticks tenaciously to hands and anything else. Use rubber gloves.
They say ultra violet light only dulls the paint if exposed to direct sunlight, not the underside of cars. Even if dulled, it is not suposed to hurt the rust protection.
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Re: POR 15
Author: Chris (---.ext.ti.com)
Date: 03-02-05 08:36
I used the silver POR15 because it is suposed to have small particles to fill pinholes. I replaced the fornt and rear floors of my '64 Monza 'vert with new floors form one of the vendors. The new floors do not replace the metal under the drivers and passenger seat, so I used the Sliver POR 15 to fill thre pin holes I had there. I am very pleased with the results the POR15 dries hard as an anvil. A few words of caution, DO NOT spray POR15, instead apply with a brush, wear a respirator, gloves and gogles.
Now, tricks for preserving POR15 in the can, DO NOT open the can, instead use 2 self tapping sheet metal screws with the steel washer and rubber gasket on them, the type used to put corrugated tin on a barn. Insert the screws 180 degerees apart in the BOTTOM of the can. Remove both screws to pour out only what amount you can apply in 15 minutes or less. replace the screws and place can aside RIGHTSIDE up, POR15 stored this way is good for at least 2yrs in my experience.
Chris
NTCA
CORSA
'64 Monza 'vert
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Re: POR 15 one other piece of advice
Author: Chris (---.ext.ti.com)
Date: 03-02-05 08:41
Oh yeah, I forgot to mention try to avoid contact with your skin, this stuff will not come off if you happen to get any on you, you'll be wearing it for at least 2 weeks. DAMHIKT
Couple unusual ideas, but it works for them.
