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Sayerlack Sheen Problems1/4
Recently tried Sherwin William's new polyurethane Sayerlack. I had some good results on a couple of tables and was excited to use it on large cabinet job as an affordable upgrade from conversion varnish.
It was extremely hard to get an even sheen with my top coat and my rep gave me several of fixes that had no effect or made matters worse. When I finally got a hold of a tech they let out that the flattening agents are not working with this product.
I ended up having to scuff the faces down of the whole project and do another coat of Ilva.
What a disappointment that they would know that they had a problem with there product and continue to sell it. I guess S.W. is more concerned with there bottom line than there customers
I work for a fairly large manufacturer and use Sherwin products including Becker and Sayerlack side of those coating. I'd say we are an easy over 200+ gallons of chemicals a week. Only time I've ever run into a sheen issue with any of them is user error. If the container has been sitting for a while and not rotated stock they will settle and hard pack. Finishers go to mix up their setup and shake the container like their usual sequence and pour up and spray and every once in a while end up with a different sheen from their previous batch.. 9 times out of ten I got to the container they pulled out of and I can dig flattening agent of the bottom that was hard packed and never fully agitated into the suspension. So if someone starts of not fully agitated the sheen can fluctuate throughout each setup... of course inconsistent application and overlapped can lead to issues will finishes under 30 sheen and below also.... it's good practice to scrape the bottom of the bucket after anything leaves the paint shaker/conditioner to get a good read. It could also just not fully saturate the mix and just bouncing around in the suspension if temps are low and it hasn't been fully mixed even if the bottom doesn't hard pack... This goes for any brand of film finish...
Make sure you are curing these at the recommended temperature. That definitely will dicker up the sheen. I know that with some of their conversion varnishes, cold temps mean you get blotchy sheen and insufficient curing, but that's true of many CV's. I can't see Sayerlack being much different.
Also be sure that your spray folks are keeping the finish agitated. I can't speak from experience on Sayerlack but any time you are using a fairly "new to me" finish, stir it every 10 minutes or so until you get an idea how fast it settles out.