Momentum vs others floor decking
Wife and I like the G class Momentums, but they use 1" "marine grade" OSB decking that has a 25 year warranty (for what that's worth). They also have extended warranties on other components such as ax...
Forum Discussion
Roof? Membrane only, and you have to show proof of maintenance. Flooring substrate? It will last forever....if it is never exposed to moisture. Both of those things are next to impossible to do. If you climb on the roof, your warranty can be voided. If it rains and water hits that OSB, your warranty is voided. If you bring in your toy while it's wet, you can void your warranty.
