[voisin]

I’ve got a skylight that I hate (faces southwest so in the high summer sun it turns into a heat ray of death) and was planning to have removed, decked over and shingled. Since you are a building science scholar, I am wondering if the tunnel actually needs to be deleted or if I could just put some rigid insulation board at the bottom of the tunnel and then drywall over it?

[toomuchtodo]

No need to remove the tunnel if you prefer not to. Rigid foam to a depth that meets the R value for your zone and AHJ requirements (“local code”). Check if any inspection is required before drywalling over the rigid foam.

[voisin]

Thank you

[toomuchtodo]

Happy to help, enjoy the project!