I don't have a Menards near me, but my parents do. If it were me, based on the quality of stuff there, I wouldn't be trying to compare warranties of the products there vs other places. Menards is known for low prices....and they don't do that by offering the good stuff. i just did a quick search and found a composite with a 25 yr warranty for residential applications. YMMV. My point is...like someone else mentioned...you get what you pay for. I wouldn't go judging all composite decking by what you see at Menards.