Drying timber by dehumidification is a more gentle process than the more conventional kiln drying methods used in large-scale timber production. Consequently dehumidification leads to less checking (a bonus with Australian hardwoods) but the downside is, it is relatively slow. Progress needs to be monitored by testing the timber at intervals with a moisture meter. There is much helpful information on the net about building a dehumidifying kiln, mostly from US sources. You will find this information if you write "building a dehumidification kiln" or similar wording in your browser.

The allowable overhang for an LVL will depend on the size of the member and the load it supports. Maximum overhangs for various load situations are tabulated in the span tables published by suppliers. Span tables can be found on supplier websites, or can be generated using timber design software. A selection of design programs can be found on our website via this link https://www.woodsolutions.com.au/resources/specifications/span-tables-and-software.

We don't feel the floor joists will need to be replaced, but whether the floorboards will be unserviceable after they dry will depend on the degree of distortion that remains. No doubt the flooring was swollen after being wet for two weeks. Generally flooring flattens out to some extent upon drying, but this can only be assessed when the drying process is completed. If it still looks damp, testing the timber with a moisture meter will determine whether further drying is needed. If you don't have access to a moisture meter they can be hired.