I used Decolite for the solid part of my bimini
. It is a fiberglass
(thin) skinned end grain balsa sheet. Other thicknesses are made, but I used 1/2 inch. Half the weight of 1/2" plywood
, and they claim the same strength as 1/2"plywood. The 1/2" thickness does bend, at least plenty enough for my design.
This solid portion (I glued plastic bolt rope
tract to the side edges for attaching Sunbrella extensions, or wings) is about 8 feet long and about 5 1/2 feet wide, and I have stood on it along with someone weighing about 200 lb. So I had to splice 2 panels
I believe the original manufacturer, Baltek, has sold the process to another company. When I bought it about a dozen years ago, it was about $200 for a 4'X8' sheet, which seems expensive, but for what it is, I figure it is a an easy way to get a strong, light solid top.