I have the 5 kynar and the 15 poly Yamada and I love them both. I use a roll air compressor to feed them. I use the kynar to fill the mix tank and the poly 15 to shoot the roof. The 5 is all a small residential cleaner would need. I asked my wife if the yamada's could sleep with us I love them so much. She said no, something about wetting the bed.
What size roof would determine using the 5 vs the 15?
Explain how you use the 5 for filling the mix tank?