Interprotect 2000 first coat on, need opinions...
Yesterday I was able to get the first coat of Interprotect 2000 on the bottom. I did a little QA sanding and was satisfied that the bottom and keel pocket were ready. I mixed up one third of a gallon kit, that is 32 oz of the base, 10.6 of the catalyst, and 4.5 oz of the special Interlux thinner for the recommended 10 percent. So that yielded approx 47 oz of activated paint.
First I rolled the keel pocket; not the whole thing, just about 2/3 to 3/4 deep where the roller reached easily and coated nicely without dripping. I also rolled and tipped the keel tunnel and up to the volcano/seacock. This is where I discovered that Interprotect does not really tip well, but that is because it was probably too hot outside and the hull was very warm. The rolled finish is a nice as you need for bottom primer anyway. I used a 4 inch fine polyester foam roller.
Then I rolled out the rest of the entire bottom and was amazed at how much paint I had left in the tray, way too much to throw away. I figured it wasn't enough to do a second coat on the bottom so I made sure the keel and rudder were ready (a little hand sanding just to check and solvent wipe down). I put 3 coats on one side of the keel and 3 coats on one side of the rudder, letting each coat dry to the touch before rolling another.
At this point I still had a pretty good amount of paint (realized I should have just rolled the bottom a second time). So I added some grey epoxy tint to the remaining paint and had enough to roll from the bow to the keel pocket on both sides, the fwd 1/3 of the bottom.
So now I am basically on the fence about using the second gallon at all. If I mix up another 32 oz of base plus 10 oz hardner and thinner today that will give me enough paint to tint about 12 oz of it and finish that light grey 2nd coat, then do an entire 3rd coat in white plus do the other side of the keel and rudder w/ 3 coats of white. After that have 1/3 of the kit left to do the final coat that will need to followed immediately by bottom paint when thumbprint dry.
So the question is, do I skip the second gallon of Interprotect because I am getting my 4 coats from just one kit? Are my coats too light because I am using a fine foam polyester roller instead of 1/8" nap roller? As far as number of barrier coats go, remember I have a coat of epoxy on the bare fiberglass, and 8.9 oz layer of glass, and then a skim coat of resin to fill the weave, so that's 3 to 4 coats of epoxy resin.
By the way, I waited until the Sun was low (around 5 pm) and there was light cloud cover to paint. Even then it was still very difficult to keep a wet edge since the hull was so warm itself. I was painting the keel and rudder after dark but air temp was still 74 ish. This stuff stinks! Wear a mask even painting outside!
Yesterday I was able to get the first coat of Interprotect 2000 on the bottom. I did a little QA sanding and was satisfied that the bottom and keel pocket were ready. I mixed up one third of a gallon kit, that is 32 oz of the base, 10.6 of the catalyst, and 4.5 oz of the special Interlux thinner for the recommended 10 percent. So that yielded approx 47 oz of activated paint.
First I rolled the keel pocket; not the whole thing, just about 2/3 to 3/4 deep where the roller reached easily and coated nicely without dripping. I also rolled and tipped the keel tunnel and up to the volcano/seacock. This is where I discovered that Interprotect does not really tip well, but that is because it was probably too hot outside and the hull was very warm. The rolled finish is a nice as you need for bottom primer anyway. I used a 4 inch fine polyester foam roller.
Then I rolled out the rest of the entire bottom and was amazed at how much paint I had left in the tray, way too much to throw away. I figured it wasn't enough to do a second coat on the bottom so I made sure the keel and rudder were ready (a little hand sanding just to check and solvent wipe down). I put 3 coats on one side of the keel and 3 coats on one side of the rudder, letting each coat dry to the touch before rolling another.
At this point I still had a pretty good amount of paint (realized I should have just rolled the bottom a second time). So I added some grey epoxy tint to the remaining paint and had enough to roll from the bow to the keel pocket on both sides, the fwd 1/3 of the bottom.
So now I am basically on the fence about using the second gallon at all. If I mix up another 32 oz of base plus 10 oz hardner and thinner today that will give me enough paint to tint about 12 oz of it and finish that light grey 2nd coat, then do an entire 3rd coat in white plus do the other side of the keel and rudder w/ 3 coats of white. After that have 1/3 of the kit left to do the final coat that will need to followed immediately by bottom paint when thumbprint dry.
So the question is, do I skip the second gallon of Interprotect because I am getting my 4 coats from just one kit? Are my coats too light because I am using a fine foam polyester roller instead of 1/8" nap roller? As far as number of barrier coats go, remember I have a coat of epoxy on the bare fiberglass, and 8.9 oz layer of glass, and then a skim coat of resin to fill the weave, so that's 3 to 4 coats of epoxy resin.
By the way, I waited until the Sun was low (around 5 pm) and there was light cloud cover to paint. Even then it was still very difficult to keep a wet edge since the hull was so warm itself. I was painting the keel and rudder after dark but air temp was still 74 ish. This stuff stinks! Wear a mask even painting outside!
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