I am planning to install Harwood flooring over a concrete slab. Intend to first put ashpalt mastic down, followed by 15 lb felt, mastic, 15lb felt, then nail 3/4 ply to the concrete. My question is what should I use for the mastic? Lowes carries a waterbased product called Black Jack #55 that is used on Roofs. Should I be concerned about the smell of ashpalt in my house? Any help would be appreciatted.
Thanks
TS