Need to epoxy the rear frame on a 3/4 ton chevy- (06 2500hd)….temps in the northeast have settled down, all our shops are freezing, and I want to epoxy this frame while the bed is off. I will NOT be top coating the epoxy. Anything wrong with spraying in the morning, keeping it warm till evening, and sending it out the door the next morning?
Epoxy on frame -cold weather
- Thread starter bmenard
- Start date
anotheridiot
Member
keeping the frame warm before the epoxy is sprayed is also important.
crashtech
Combo Man & Mod
I think Barry ought to be brought in on this. The procedures for temps and epoxy have evolved a bit over the years, but for maximum longevity, heat needs to remain on the frame for as long as possible.
Last time I did one like you are describing, I kept it in the heat for about 48 hours after it was shot, because I know that at this time of year, the next chance that frame will see a natural temp high enough to help cure it will be sometime in the late spring.
Last time I did one like you are describing, I kept it in the heat for about 48 hours after it was shot, because I know that at this time of year, the next chance that frame will see a natural temp high enough to help cure it will be sometime in the late spring.
Most important is frame needs to be in the 65 to 70 degree range and remember if the shop is 70 and you pull frame in it will take 4 or more hours to reach a temp of 60-62 degrees.
If frame is 70 degrees, I would spray and then keep heat on for 24 hours and this would get the epoxy out of the critical range for the cold.
Also induce the epoxy the night before to start the curing process and eliminate any most from air problem with cold weather.
One other note, MAKE sure the cans of epoxy are stored in house 24 hours before mixing.
All the above is very serious stuff and no room for shortcuts if you want it to last.
If frame is 70 degrees, I would spray and then keep heat on for 24 hours and this would get the epoxy out of the critical range for the cold.
Also induce the epoxy the night before to start the curing process and eliminate any most from air problem with cold weather.
One other note, MAKE sure the cans of epoxy are stored in house 24 hours before mixing.
All the above is very serious stuff and no room for shortcuts if you want it to last.
Most important is frame needs to be in the 65 to 70 degree range and remember if the shop is 70 and you pull frame in it will take 4 or more hours to reach a temp of 60-62 degrees.
If frame is 70 degrees, I would spray and then keep heat on for 24 hours and this would get the epoxy out of the critical range for the cold.
Also induce the epoxy the night before to start the curing process and eliminate any most from air problem with cold weather.
One other note, MAKE sure the cans of epoxy are stored in house 24 hours before mixing.
All the above is very serious stuff and no room for shortcuts if you want it to last.
If frame is 70 degrees, I would spray and then keep heat on for 24 hours and this would get the epoxy out of the critical range for the cold.
Also induce the epoxy the night before to start the curing process and eliminate any most from air problem with cold weather.
One other note, MAKE sure the cans of epoxy are stored in house 24 hours before mixing.
All the above is very serious stuff and no room for shortcuts if you want it to last.
H
hoodun
I may have an issue with this. ...should have researched more before spraying. Someone also just warned me about this same thing, but I didn't pay as close attention as I should have and was really anxious to spray this morning. 
.
To start, the car has been in the garage for a couple days. I sprayed this morning while air temps were at 70. Just now I started reading the tech sheet... I know... Temps are now at 62 (air temp in garage), it has been about 5 hrs since I sprayed. There were a few hours where the temps may have dropped below 65 on the metal with 2-3 hours after painting. I do not have a way of gauging the metal temp, at least not tonight. I just grabbed my space heater and air temps are now up to 74.
Is there anything I should be looking for to see if the epoxy has become dormant? If so, will waiting longer remedy this issue? How long?
I'll add it looks great. Its the first thing (car) I sprayed other than a motorcycle tank. My pressure was a bit high (40 psi) so there is subtle orange peel. I will be sanding anyway. Once I figured it out, it went on like glass. Amazing a beginner like me can get these kind of results. I'm very appreciative of these products.
. To start, the car has been in the garage for a couple days. I sprayed this morning while air temps were at 70. Just now I started reading the tech sheet... I know... Temps are now at 62 (air temp in garage), it has been about 5 hrs since I sprayed. There were a few hours where the temps may have dropped below 65 on the metal with 2-3 hours after painting. I do not have a way of gauging the metal temp, at least not tonight. I just grabbed my space heater and air temps are now up to 74.
Is there anything I should be looking for to see if the epoxy has become dormant? If so, will waiting longer remedy this issue? How long?
I'll add it looks great. Its the first thing (car) I sprayed other than a motorcycle tank. My pressure was a bit high (40 psi) so there is subtle orange peel. I will be sanding anyway. Once I figured it out, it went on like glass. Amazing a beginner like me can get these kind of results. I'm very appreciative of these products.
Last edited:
H
hoodun
It looks like I dodged this bullet. I am able to sand the epoxy after 20 hrs and it appears to have dried with no issues. I am guessing the metal temp was probably around 60 so it was a close call.
Looking back, I thought I was fine because I sprayed my motorcycle tank a year ago with unreduced epoxy and it came out great. The temps were around the same so I didn't think twice about it. ...so its not even about reading the tech sheet. ...its about re-reading the tech sheet each time you spray, especially when years pass.
Looking back, I thought I was fine because I sprayed my motorcycle tank a year ago with unreduced epoxy and it came out great. The temps were around the same so I didn't think twice about it. ...so its not even about reading the tech sheet. ...its about re-reading the tech sheet each time you spray, especially when years pass.
Arrowhead
Oldtimer
Well I bit by the "epoxy chill" twice this last week. It's been down in the single digits at night and was reluctant to keep the heat up at 70 all night. Big mistake. I'm usually very good about pre and post heating with epoxy and I should know better. Luckily it was only on a couple of very small areas. On the bright side I was able to scrape the filler and epoxy off all at once!
Barry;n57582 said: