ᐅ Gable roof / Insulation up to the ridge or up to/on the intermediate ceiling?

Hello

The question concerns the insulation of a pitched roof (a one-and-a-half-story single-family house is to be built) with an unheated attic (used not as living space but only as storage). Should the insulation be installed between the rafters all the way up to the ridge, or only up to the top edge of the intermediate ceiling between the attic rooms and the attic space, with insulation then applied to the ceiling?

Or should both be insulated?

According to the builder, all options are possible, and he would choose the first option.

Insulating all the way up to the ridge is more expensive because it involves a larger surface area than just the ceiling of the intermediate floor.

Hello,

Philiboy83 schrieb:

According to the structural engineer, everything would be feasible; he would apply the first option.

You *can* do that, but you shouldn't if the attic is really intended only as storage and not for potential future conversion. It’s always more practical to have it directly above the top living floor!

Best regards, Bauexperte

If you insulate up to the ridge, you will also be heating all the way up to the ridge. This is something to keep in mind.

Hello,

HausbauBlog schrieb:

Our certified inspector said the following: Even if we only want to use the attic up there for storage, he recommends insulating it later between the rafters. At the moment, it is sufficient as it is.

.... The attic will get cold in the winter and some moisture will develop.

I am quite surprised that these statements are supposed to have come from a certified inspector.

Regards, Bauexperte

Insulating up to the rafters is better. However, not everyone can do it because you need a professional rigid foam or insulation cutter for that, the kind that also allows you to make angled cuts. Not even every tradesperson has such a foam cutter.