Find a sealant for non-porus materials if you're bedding in aluminum, plastic or other non-porus material. But if you are bedding in wood you've got a problem .... Needing to adhere to both porus and non-porus materials.
If you want to redo the bedding fairly often try to use something like Dolfinite that is only a sealant and not an adhesive also like Sika-Flex.
North Western Washington State USA