Hello,
I have a sunroom with spring/fall insulating glass. We have foam plastic under the wooden floor to prevent drafts. We will be installing a fireplace in the sunroom this spring. I'm considering installing some form of wooden ceiling inside afterwards. Now to my concern, do you need any insulation in the ceiling?
I'm not thinking about warmth but more if it's needed for different temperatures throughout the year outside. I'm also thinking about how it will be if we use the fireplace and it's colder outside, if it might become unsightly, etc., since the room will be warm during periods when it's cold outside.
If one is to insulate, should one add an air gap, insulation, and then a vapor barrier with plastic foil, or alternatively spray foam directly onto the roof sheathing?
grateful for suggestions on this so it is done right from the start.
I have a sunroom with spring/fall insulating glass. We have foam plastic under the wooden floor to prevent drafts. We will be installing a fireplace in the sunroom this spring. I'm considering installing some form of wooden ceiling inside afterwards. Now to my concern, do you need any insulation in the ceiling?
I'm not thinking about warmth but more if it's needed for different temperatures throughout the year outside. I'm also thinking about how it will be if we use the fireplace and it's colder outside, if it might become unsightly, etc., since the room will be warm during periods when it's cold outside.
If one is to insulate, should one add an air gap, insulation, and then a vapor barrier with plastic foil, or alternatively spray foam directly onto the roof sheathing?
grateful for suggestions on this so it is done right from the start.
Self-builder
· Stockholm
· 8 573 posts
In a conservatory, I avoid plastic.
For plastic to be useful, it must be completely sealed (walls+floor+ceiling), and the warm temperature must always be on the inside.
An outdoor area, at least in my case, is not heated and can easily become colder than outdoors (resulting in reverse condensation if there is plastic).
Some kind of insulation in the ceiling is probably good, and definitely an air gap. The best might be isolina or something similar that can absorb and release moisture. But regular wool probably works too as long as any moisture can be ventilated away in the air gap.
I would build like a traditional roof, minus plastic, that is from the inside:
Ceiling, insulation, masonite, air gap, tongue-and-groove boards, felt, outer roof.
For plastic to be useful, it must be completely sealed (walls+floor+ceiling), and the warm temperature must always be on the inside.
An outdoor area, at least in my case, is not heated and can easily become colder than outdoors (resulting in reverse condensation if there is plastic).
Some kind of insulation in the ceiling is probably good, and definitely an air gap. The best might be isolina or something similar that can absorb and release moisture. But regular wool probably works too as long as any moisture can be ventilated away in the air gap.
I would build like a traditional roof, minus plastic, that is from the inside:
Ceiling, insulation, masonite, air gap, tongue-and-groove boards, felt, outer roof.