Cross Surports or Rafters?

Hi all Troy here
I needs some input here. I will be raising my walls soon. My walls are 1/2" with 3/4" framing around the edges, then going to insulate. Then inside will be 1/4 maple skin. I saw somewhere, that someone had routed dadoes or rabbits for the rafter I forget which is correct term my mind goes blank sometimes, ha ha. I was thinking of doing the same thing and screwing into from the top instead of from the sides. Which would be better? I know if I go in from the sides this would pull the side in, but don't want to have screws visible. Thoughts and idea's most appreciated. Happy Camping Thank You Troy
I needs some input here. I will be raising my walls soon. My walls are 1/2" with 3/4" framing around the edges, then going to insulate. Then inside will be 1/4 maple skin. I saw somewhere, that someone had routed dadoes or rabbits for the rafter I forget which is correct term my mind goes blank sometimes, ha ha. I was thinking of doing the same thing and screwing into from the top instead of from the sides. Which would be better? I know if I go in from the sides this would pull the side in, but don't want to have screws visible. Thoughts and idea's most appreciated. Happy Camping Thank You Troy