[CliffK]

Never liked the Impervex HG. Haven't used it in many years. I also for the first time, had trouble with the Impervo last fall on some iron rails. 3 days later it rained and the finish cringed where the water sat on it a little. Tried to sand it out and recoat the top rails and it was still gummy a week later. Had to strip the top rails and start from scratch. Ended up with $500 in future material from the BM rep-he never saw it-just took my word for it. They know it's bad. I really believe half of the stuff we use anymore is an experiment and we're the guinea pigs. They are constantly messing with the formulations and getting it out on the market long before it has been proven.

 

[CliffK]

Cliff. Strictly a guess...if you did it in the fall, it was too cold during application. It wasn't fully dried when it got wet causing the wrinkling. When you recoated, it still wasn't dry and the coat you applied to fix the problem trapped solvent from the previous coat causing the top layer to be "gummy".

With the VOC regs, alkyds are much more temperamental than ever before. They cure slowly, yellow much faster, and will get stringy.

It actually was summer, but you are most likely correct. That being said, if we've got HG Oil that can't take a rain shower 3 days after you do it, then why bother making it??!!?? We,re not working in controlled environments, it's the real world. Maybe it's a situation where with the new regs it just can't be accomplished anymore-if that's the case just accept it and stop making it. It is still being sold as the right thing to do.

 

[CliffK]

Cliff, the first post you made you said fall not summer? Thats why I was thinking temperature may have affected curing.

Oil's are being phased out slowly but surely. Even though they're crappier than before, in many cases they're still the best for the job....go figure right.

Depending on your area, some allow a higher VOC content than others. Manufacturers on the other hand might make a product in a lower VOC formula that can be sold in all areas rather than multiple batches with different VOC content for specific areas.

September in NY-I guess it could go either way.. lol.
I realize they are being phased out and changing and there are new considerations. I hear ya.. still the best of the worst. I'm just saying if an oil HG needs more than 3 dry days before a rain shower to be able to handle the rain shower than I don't think they should be selling it to me for exterior iron work. Lets just accept the fact that we can't make it well anymore and move on. I am the last guy who wants to see the oil go. Oils have been my go to paints for trim/woodwork and metals for 35 years. As much as I would hate to start painting iron rails with waterborne products I can't have wet oil paint 3 days after I do it. The fact that BM gave me $500 site unseen tells me they know..and that I've still got the benefit of the doubt Thanks for your insights NC, apologies to all for getting off topic from the Impervex discussion.