Find out why DMX Airflow™ is called “The World’s Best Flooring Underlayment”…click here. I have not used either system but it looks to me like the DMX only offers air flow between the membrane and the concrete slab whereas the Superseal will have airflow both between slab and membrane as well as between membrane and laminate floor. Lay DMX AirflowTM CARPET with the dimples facing down (grey side down) DMX Airflow TM CARPET is butted up against the tack strips. With the idea of allowing the floor to breath better, I installed the DMX product with 12mm lamminate on top and left the quarter rounds a couple mm above the lamminate to allow airflow. The DMX Airflow underlaying membrane is perfect for any type of flooring. It has been almost a year with the DMX product but still notice a very light musty smell; probably because im paranoid and go looking for it. check it out! This patented product offers superior soundproofing and insulates your floors from the cold with the vapor tape that insures a complete sealing. This patented membrane is designed for use under laminate, engineered hardwood, vinyl planks and carpet. *** I have not been sponsored or asked to do this by DMX in any way, I simply like the product. **New and Better Underlayment for Vinyl, laminate and engineered hardwood floors** **Patent Pending** Why DMX Airflow LVT 2.0? DMX 1-STEP 2.0™ space-age contoured foam and unique dimple design provides the ultimate in sound absorption while allowing air to circulate beneath your floors, evaporating trapped moisture and eliminating harmful mold growth. I think both products would have worked but the DryBarrier is MUCH thicker/heavier and seemed easier IMO to work with. NO plywood or OSB required. DryBarrier is probably 3 times heavier per SQ.FT than DMX … Installation of our Famous Blue Roll™ is … Can be used under Vinyl Plank Flooring (5mm or higher); VOC Free – No dangerous off gas into the living space; 4 in 1 Protection – Mold, sound, thermal and vapor barrier ALL IN ONE; Foam on dimple side makes the floors warmer and cozier under your feet DMX Airflow Premium 4 mm Flooring Underlayment DMX Airflow is a patented underlayment for use under all types of flooring. It is the quietest dimpled underlayment in the market and has an air gap design that promotes airflow under your floors to evaporate mold causing moisture. Made of closed-cell waterproof foam on both sides, it allows airflow under your floors which eliminates moisture that causes mold. Do not leave a 1/4” gap between DMX AirflowTM CARPET and the tack strips Tape the seams of DMX AirflowTM CARPET (tape along the length of the seam first, then tape across) Lay down your carpet I ordered one roll of DMX airflow and one box of DryBarrier to compare the products. Best for Vinyl: DMX 1-Step 2.0 Underlayment Buy on Home Depot Vinyl is thinner than laminate, which means you need more vertical deflection so there’s no movement in your floors; this DMX 1-Step 2.0 has 325 dimples per square foot for added support. This is what I use!! I'm just about to start finishing my basement and even bought one roll of the DMX Airflow just to try and test it out but unfortunately the only true test would be to install some all the way. This unique membrane is designed for … My plan was to install carpet for the theater room with standard carpet pad and tack strips (not using the Airflow …