Hello partnersI am testing durraamen e 32 water base primer on a Mexican a tile .I used a Short nap 1/4 roller it left small pin holes then I used u46 polyurethane on the 2 coat and you can still see the pin hole.Any ideas way the 1 coat had pin hole . Hector castilloSent from my Verizon Wireless 4G LTE smartphoneVisit list archives, subscribe, unsubscribe or change your subscription preferences: http://stoneandtilepros.simplelists.com/sccpartners Start a new conversation (thread): sccpartners@stoneandtilepros.simplelists.com