im no good in the garden, but its gotta be done this year, i want to put paving slabs down for a shed and a path, some grass, some gravel, i was thinking of putting some gravel board down on edge, and making compartments, then putting some weedstopper sheet and then filling the compartments with whatever i decide to put in there..... ive no experience but all the time in the world........ will it work is my question....? im worried the gravel board will rot over time.