Best approach to termite shield and sill plate air sealing – GreenBuildingAdvisor

Please see the attached image. Zone 5, high desert, with termites.

I have a slab on grade with edge insulation and a parged coating. Above I’ll have a termite shield, then the framed wall.

Questions, your preferences –

1. Stainless or galvanized sheet metal for the shield?

2. Considering that the air barrier happens at the sheathing, with all joints taped, I need to seal the sill plate. There are 2 surfaces to consider, below and above the termite shield. What would be your preferred sealants for both those surfaces? Some choices, thin foam strips (I hear not very effective), generous beads of acoustical sealant, rubber gaskets, no sealant at all and rather caulk the joint between the sill and the concrete on the interior.

3. Do I need to tape the wall sheathing to the termite shield for air barrier if I’ve got a sealed sill?

4. Alternatively to Q.3 I could tape the bottom of the wall sheathing to the underside of the sill before the wall is lifted into position. This would cover the joint between the sheathing and the sill plate.

5. Does the sill plate need to be pressure treated if it is separated from the concrete by 2 layers of sealant and a termite shield?