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Re: Conventional vs. primerless to glass urethane

chemist (not)
2 cents...
Everybody\'s an expert, or thinks they are. If primerless urethane is so unfit, so unreliable, etc,. etc. then tell me this... why would manufacturers even produce the stuff? Most all urethane manufacturers do make it available. Come on guys, let\'s keep opinions and facts separated.
Well, thats a multi-part question. The reason they make it is because there is a segment of our industry that wants to pay $3 for adhesive. Ask a urethane mfr rep (unofficially) which they would use in their kids car. As far as the performance, take a look at the "charts"...now I know that we-uns cant be forced to actually do some research, but if you look at the overall performance, there is a difference. Also, if the product was good, why on earth wouldn't they use it on the assembly line....god knows how much you could save by eliminating an entire step. I know they don't use any of the products we use, but they certainly do not use a primerless one.

The original question was whether you could mix primer / adhesive, or if you really even needed to prime with a product that required it. You don't need to be an expert to answer that. No and Yes.
Correct.

Re: Conventional vs. primerless to glass urethane

I dunno, Freddy and chemist not. Think about this - why would a urethane manufacturer put themselves at the legal and monetary risk you both say is so certain? Especially for $3/tube urethane? Besides, most of the primerless I've seen costs more than non-primerless per tube. I don't use primerless myself, but still your arguements seem baseless to me.

Re: Conventional vs. primerless to glass urethane

Read the original post. The question was whether it’s ok to use regular, not primerless, urethane, without primer or with a primer from a different manufacturer. The answer is no and no.

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