Prep for Paint
Fleet Mechanic
Joined: Dec 2007
Posts: 1,512
Likes: 340
From: Wildwood Pa
If it has been tightly sealed you should be fine. I've used years old paint with no problems. You may want to take it to a paint store & have them put it on their shaker for a few minutes.
Tuned
Joined: Jun 2014
Posts: 475
Likes: 34
From: Vermont
To answer a couple of the many questions in this post.
Let me first say .... The reason for stripping old paint before repainting is YOU DO NOT WANT TO PUT GOOD PAINT OVER BAD. The top coats are only as good as what is underneath them. You know... "the weakest link in the chain ". If the old paint is delaminating, peeling whatever; it will generally continue to do so at some point with the nice new paint over the top of it. Poor adhesion in one of the coats ..... new or old paint is the downfall.
Tbear.... " I don't know what he used but in short time, the paint was popping off the primer he used, in specks like rain drops". That is called "Solvent Popping". Solvents in the primer used were trapped in the primer; meaning the solvents had not evaporated or dried completely before top coating.The solvents (thinner) continued to try to evaporate after the top color coats were applied.The little "pops" is solvents evaporating. Solvents, also in attempting to evaporate, will,at times,"wash out" an adhesion layer between coats of product.
F250.... As Scottscott said and also If stored in a place where the extreme cold has not affected it.
Tricky business this painting stuff at time. Good luck all.
Let me first say .... The reason for stripping old paint before repainting is YOU DO NOT WANT TO PUT GOOD PAINT OVER BAD. The top coats are only as good as what is underneath them. You know... "the weakest link in the chain ". If the old paint is delaminating, peeling whatever; it will generally continue to do so at some point with the nice new paint over the top of it. Poor adhesion in one of the coats ..... new or old paint is the downfall.
Tbear.... " I don't know what he used but in short time, the paint was popping off the primer he used, in specks like rain drops". That is called "Solvent Popping". Solvents in the primer used were trapped in the primer; meaning the solvents had not evaporated or dried completely before top coating.The solvents (thinner) continued to try to evaporate after the top color coats were applied.The little "pops" is solvents evaporating. Solvents, also in attempting to evaporate, will,at times,"wash out" an adhesion layer between coats of product.
F250.... As Scottscott said and also If stored in a place where the extreme cold has not affected it.
Tricky business this painting stuff at time. Good luck all.
Hotshot
Joined: Feb 2004
Posts: 10,837
Likes: 2,612
From: The Shenandoah Valley
Tbear.... " I don't know what he used but in short time, the paint was popping off the primer he used, in specks like rain drops". That is called "Solvent Popping". Solvents in the primer used were trapped in the primer; meaning the solvents had not evaporated or dried completely before top coating.The solvents (thinner) continued to try to evaporate after the top color coats were applied.The little "pops" is solvents evaporating. Solvents, also in attempting to evaporate, will,at times,"wash out" an adhesion layer between coats of product.
Thank You.
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imlowr2
1948 - 1956 F1, F100 & Larger F-Series Trucks
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Oct 25, 2005 08:27 PM
