If your looking for better
Insulated raft is for you
If your looking for cheaper You will be disappointed Raft is more expensive
Or they would be more commonly used
we are about the same as you on the inside We’ve a friend that’s in a wheelchair She can easily navigate over the threshold
The ramp on our previous build was made out of four sheets of ply with mineral felt on the top
They just need to know that a wheelchair can safely get in and out
You can add something temporary in order to get signed off and a Matt on the inside As we did on our previous build
We’ve around 40 mil of threshold on our DA door BC was fine and more concerned about the lead up to it being ramped With a flat level pice in front of the door