• Having site issues? Contact Dub@southernPolyurethanes.com

Amount of epoxy sealer needed?

D.C

New Member
#1
I currently have my 77 Chevrolet truck (long bed) in grey spi epoxy. About how much rts (1:1:1) grey epoxy sealer will i need to cover the whole exterior (minus inside bed) before base?
 

D.C

New Member
#3
Well cornet, I did a panel at a time and kept some records, this is my first overall but i used the epoxy only (blocking each two coat session a couple days apart) from bare metal(no 2k) for surfacing . I'm learning I have heavy gun fingers and have abused the epoxy (guess I'm glad it's spi), so my records from the past several months, are not all that accurate.
 
#4
A good rule of thumb I read here is 8 ounces per panel and it works pretty good for me.

Not sure I would reduce it quite that much. I use half that amount of reducer.

Don
 
#5
Panel size being like a standard door. So your box side being a long box would be more than the somewhat standard 8 oz.

I agree with Don. In my limited experience I have always gone 1:1:0.5 or 25% reducer on epoxy sealer and found it to spray great.
 

D.C

New Member
#6
Thanks fellas, maybe I will give the 1:1:0.5 a try. I've played around with 1:1:1 and it went down pretty smooth for me, so that's why I was kinda set on that.
 
#7
From the SPI tech manual:

To use as a Paint Sealer:
To use the epoxy as a paint sealer, reduce it 5-50% with the proper temperature range
urethane reducer (this is very important) and spray with your base/clear gun. Spray one
wet coat ONLY, let it sit 2 hours then apply paint. For sealing of a potential problem
paint job, apply two coats of epoxy with proper flash times between coats and let it sit
over night before painting.

Remember, reducing epoxy speeds up the cure time, so when mixed as a sealer the best
application of base is within 2-18 hours (no sanding is needed within this time frame).

1:1:1 is 50% reduction which has always worked well for me.
 

D.C

New Member
#8
Thanks coronet, (sorry I misspelled your name earlier) coronet reminds of a neighbor we had 30 some years ago, he had a coronet wagon, but anyways jumping (fast forward) in a couple weeks, I'm looking to do my first overall and Barry suggested I use euro clear, (I'm guessing) two gallons +activator +reducer will be enough for my truck and a couple practice runs on a spare tailgate?
 

D.C

New Member
#10
Yes I will be doing the back of cab and front of bed, but not the inside of bed box(future spray liner) so basically just the whole exterior and jambs
 
#12
The induction time makes this more complicated. If it wasn't for induction, you mix up a full cup, spray until you run out, then mix up some more to continue. I would estimate about 40 oz of rts, much different than coronet's estimate, so not sure what you want to do with that. How large is your spray cup? I use an LPH400, 1.4 tip, and 22 psi.
 
#13
Hood, front fenders, roof, doors, jambs, back of cab, front of bed, sides of bed, tailgate and grille area. Combining jambs and grille as one panel you are still looking at 12 panels. On a 77 full size pickup that is a lot of area to cover.
 

D.C

New Member
#14
The induction time makes this more complicated. If it wasn't for induction, you mix up a full cup, spray until you run out, then mix up some more to continue. I would estimate about 40 oz of rts, much different than coronet's estimate, so not sure what you want to do with that. How large is your spray cup? I use an LPH400, 1.4 tip, and 22 psi.
i got a liter cup on my ls400, but learned not to use it on horizontal surfaces when full...drip!
 
#17
The induction time makes this more complicated. If it wasn't for induction, you mix up a full cup, spray until you run out, then mix up some more to continue. I would estimate about 40 oz of rts, much different than coronet's estimate, so not sure what you want to do with that. How large is your spray cup? I use an LPH400, 1.4 tip, and 22 psi.
I confess to not always waiting for the full induction time. Never had a problem. Please don't get mad at me Barry. LOL
 
Top