Over the master bedroom they'll install "ventilated nailbase insulation panels". The bedroom has a cathedral ceiling with no insulation, so this allows them to put the insulation on top of the roof deck, and still have the roof vented to prevent ice dams. http://www.hpanels.com/pages/pdfs/Lit_Prod_Color/Cool-Vent.pdf (5" of foam, with a plywood, not OSB)
no subject
Over the master bedroom they'll install "ventilated nailbase insulation panels". The bedroom has a cathedral ceiling with no insulation, so this allows them to put the insulation on top of the roof deck, and still have the roof vented to prevent ice dams.
http://www.hpanels.com/pages/pdfs/Lit_Prod_Color/Cool-Vent.pdf
(5" of foam, with a plywood, not OSB)