POR15 life after can is open - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hair · 11-05-2008, 12:53 PM

After I open a can of POR 15, use some, and close it back, approximately how long will it stay good? I've heard that it goes bad and hardens pretty quickly once opened. How long is "pretty quickly"? Hours, weeks, months?

**leddzepp** · 11-05-2008, 01:07 PM

Quote:

Originally Posted by Hair

After I open a can of POR 15, use some, and close it back, approximately how long will it stay good? I've heard that it goes bad and hardens pretty quickly once opened. How long is "pretty quickly"? Hours, weeks, months?

Only pour what you need into a separate container for the job. If you reuse the original can to store in, make sure you put a piece of Saran wrap between the lid and the top of the can to prevent it from bonding together (you will never be able to pry it apart) Make sure there is NONE on the lip of the can when you put the lid back on. A better way to store it is to pour it into a jar to seal it up real well, keeping care not to get any on the rim of the jar or the lid seal. Once exposed to the air, it starts to cure relatively quickly. Pour some in a conatainer, and recover/reseal the rest immediately. I have heard varying results as far as shelf life goes....it all depends on how well you seal it up. I have had a can last for months, and others just for weeks.

OldCreek · 11-05-2008, 02:03 PM

I've had a can that I reopened multiple times and it lasted for months. I did, however, store it in the refrigerator.

**STP67-72** · 11-05-2008, 02:11 PM

I was told years ago to put a sheetmetal screw in top and one on side of can so it will vent. Put it at the top of can. I have had a can for about 8-10 years. Have used it several times. Use a hex head, so you can get them out. Never take the top off. Hope this helps.

Prostreet 72 · 11-05-2008, 02:33 PM

Quote:

Originally Posted by Hair

After I open a can of POR 15, use some, and close it back, approximately how long will it stay good? I've heard that it goes bad and hardens pretty quickly once opened. How long is "pretty quickly"? Hours, weeks, months?

They also tell you after you put the plastic wrap between the lid and the can, you should store it upside down. This allows the material to skin over on the bottom of the can instead of the top. It works.

Hair · 11-05-2008, 02:34 PM

Quote:

Originally Posted by STP67-72

I was told years ago to put a sheetmetal screw in top and one on side of can so it will vent. Put it at the top of can. I have had a can for about 8-10 years. Have used it several times. Use a hex head, so you can get them out. Never take the top off. Hope this helps.

Dude!! Now that is an awesome idea!
What do you do, just shake it up before you unscrew and poor? I read on here somewhere that you should stir and not shake it. Does that matter?... or does it need to be stirred or shaken at all?

cdowns · 11-05-2008, 02:54 PM

i open it stir it real good(never shake the can!!!) i then drill 2holes in the lid 180apart and use sheetmetal screws to sealealup the can and i tahe the screws out and pour the por15 into my paint container// never work directly out of the por15container//after a few uses the sheetmetal screws get bonded to the can and i need to drill a new set of holes///done like that i've had a can last me 6-8months

SHAKING THE CAN gets all sorts of micro air bubbles and a very poor por finish

Ackattack · 11-05-2008, 03:27 PM

Quote:

Originally Posted by STP67-72

I was told years ago to put a sheetmetal screw in top and one on side of can so it will vent. Put it at the top of can. I have had a can for about 8-10 years. Have used it several times. Use a hex head, so you can get them out. Never take the top off. Hope this helps.

My boss sells POR15 on the side, and he told me the same thing. Seems to be working so far

*chevy29267truck* · 11-05-2008, 06:26 PM

you can also used ospho too

Huck · 11-05-2008, 09:16 PM

don't use a power drill and bit to get through the skimmed surface---it's under pressure as it drys. NOW ASK ME HOW I KNOW THIS!!!!!

gcburdic · 11-06-2008, 09:46 AM

Quote:

Originally Posted by Huck

don't use a power drill and bit to get through the skimmed surface---it's under pressure as it drys. NOW ASK ME HOW I KNOW THIS!!!!!

Okay, I'll bite....how do you know this???

jorgensensc · 11-06-2008, 10:41 AM

Quote:

Originally Posted by Huck

don't use a power drill and bit to get through the skimmed surface---it's under pressure as it drys. NOW ASK ME HOW I KNOW THIS!!!!!

You didn't get it on your Hootus did you?

SHawn

11-05-2008, 12:53 PM	#1
Hair Registered User Join Date: Mar 2008 Location: Tullahoma, TN Posts: 406	POR15 life after can is open After I open a can of POR 15, use some, and close it back, approximately how long will it stay good? I've heard that it goes bad and hardens pretty quickly once opened. How long is "pretty quickly"? Hours, weeks, months?

11-05-2008, 02:03 PM	#3
OldCreek Registered User Join Date: Jan 2007 Location: Central Coast California Posts: 1,026	Re: POR15 life after can is open I've had a can that I reopened multiple times and it lasted for months. I did, however, store it in the refrigerator. __________________ 1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold 1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!! 1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263

11-05-2008, 02:11 PM	#4
STP67-72 Senior Member Join Date: Jan 2002 Location: PORT NECHES, TEXAS / USA Posts: 1,668	Re: POR15 life after can is open I was told years ago to put a sheetmetal screw in top and one on side of can so it will vent. Put it at the top of can. I have had a can for about 8-10 years. Have used it several times. Use a hex head, so you can get them out. Never take the top off. Hope this helps. __________________ 55 Chevy original swb (big back window) 61 Chevy bubble top (427-5 speed) 67 Chevy stepside (Krusty) 68 Chevy swb fleet (Lola) 68 Chevy swb fleet 71 Chevy swb fleet ( future PB project) 97 crew cab power stroke 07 SS Trail blazer Last edited by STP67-72; 11-05-2008 at 02:12 PM.

11-05-2008, 02:54 PM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: POR15 life after can is open i open it stir it real good(never shake the can!!!) i then drill 2holes in the lid 180apart and use sheetmetal screws to sealealup the can and i tahe the screws out and pour the por15 into my paint container// never work directly out of the por15container//after a few uses the sheetmetal screws get bonded to the can and i need to drill a new set of holes///done like that i've had a can last me 6-8months SHAKING THE CAN gets all sorts of micro air bubbles and a very poor por finish __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 11-05-2008 at 02:56 PM.

11-05-2008, 06:26 PM	#9
chevy29267truck Account Suspended Join Date: Sep 2008 Location: Alva Florida Posts: 668	Re: POR15 life after can is open you can also used ospho too

11-05-2008, 09:16 PM	#10
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,261	Re: POR15 life after can is open don't use a power drill and bit to get through the skimmed surface---it's under pressure as it drys. NOW ASK ME HOW I KNOW THIS!!!!!



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