Typically there isn't a lot of room between the ceiling and the outside roof and the insulation they use in that space doesn't provide enough protection from the heat and cold. This is an area that is ideal for Spray Foam which provides superior insulating properties.
https://www.housebeautiful.com/design-inspiration/a32993197/...
Typically there isn't a lot of room between the ceiling and the outside roof and the insulation they use in that space doesn't provide enough protection from the heat and cold. This is an area that is ideal for Spray Foam which provides superior insulating properties.
https://www.houleinsulation.com/cathedral-roofs-vaulted-ceil...