I tried Foamers that attach to your gun, and didn't think they worked very well, i tried many different combinations of things to help it foam, with only limited results. I them bought an air powered foamer, very expensive! and combersom to work with in my opinion.
I have also talked to poeple who swear by them. probably would have worked if I had contnued to play with the chemical mixture, but in the course of talking to my chemical supplier about ways to help with the foam, out of the blue he say, did you ever try corn starch. I figured that was too simple to work, but I tried it anyway. To my surprise it worked, sort of like a gell add,it makes the chmical thick so it sticks, have been applying it with a pump sprayer. the sprayer is the problem now , it limits how thick I can make the chemical, I just need to work on it more or find a way to pump the thicker liquid.
would a surflo system handle thick liquids?