u/Comfortable-Quiet-57

Can I put Rigid Foam Insulation Board
over this rockwool? (See specific product below)

I will spray foam as needed to air seal before adding more rockwool.

Looking to add more R value. So the foam board would be over the studs and then drywall over the foam board. My understanding is that if I do the foam board over the rockwool, I would seal it with tape and a vapour barrier would not be required. Thanks for any tips I am super confused with all the info I am reading.

This product: https://www.homedepot.ca/product/owens-corning-foamular-ngx-codebord-xps-rigid-foam-insulation-board-1-inch-x-48-inch-x-96-inch-r-5-so-edge/1000155125?TTID=MA\_EN\_B

Can I put Rigid Foam Insulation Board
over this rockwool? (See specific product below)

Looking to add more R value. So it would be over the studs and then drywall over the foam board. My understanding is that if I do the foam board over the rockwool, I would seal it with tape and a vapour barrier would not be required. Thanks for any tips.

This product: https://www.homedepot.ca/product/owens-corning-foamular-ngx-codebord-xps-rigid-foam-insulation-board-1-inch-x-48-inch-x-96-inch-r-5-so-edge/1000155125?TTID=MA\_EN\_B