I have used Chemcraft Acrylic AL50 lacquer for the past 12 years with great success. I went to my supplier to get some more product and they told me that the name and number had been changed. I called Chemcraft in Alabama and the secretary said it was the same product with a different name and number. Then I called Chemcab.
We sprayed our vinyl sealer, sanded, sprayed the Chemcab, sanded, and then attempted to spray a second coat of Chemcab. This is where our problem started. The second coat looked like a dried prune. The first coat looked great on the vinyl sealer but would not layout when sprayed on itself.
I called Chemcraft back and the technical guy informed me that the Chemcab was not the same as the AL50 but was closer to a Precat. How can I get a second coat of finish to go on like it should?
Chemcraft has found me some AL50 at another store but how will I know that it will adhere to the Chemcab? I have to come up with a solution because we have about 70 doors to put a final coat on. Any suggestions will be appreciated.
From contributor W:
I found the same problem with the pre-cat as you said. The only way I solved it was to change to another product, in fact the same one I was using before they talked me into trying the precat - no more trying something different..
The solution is to either get the second coat on before the cross-linking starts or to apply it after the cross-linking is complete. All pre-cats are like this. You must avoid what is called the recoat window or they will self lift. Its the nature of the beast.