Converted Attic Eaves Insualtion Question

gandalfio

In relation to an attic conversion to a habitable space, should the eaves storage spaces (which remain cold/don't have insulation) be insulated in some way or should these areas be left cold? Should the existing rockwool that was insulating the attic floor be used to plug the gaps along the eaves where daylight is coming in/heat is being lost?

Home is new build A2 with air to water heat pump system.

Gumbo

It can depend on the thermal envelope.

Is the strategy to continue the insulation from the walls into the rafters or into the floor of the attic and then up the dwarf walls?

Padre_Pio

The eaves should be cold as you need fresh air to get up between the roof felt and the new ceiling insulation to avoid condensation.

Gumbo

Some options from Isover.

Don't block the eves, you need that for ventilation.

gandalfio

https://www.boards.ie/discussion/comment/121280759#Comment_121280759

There's insulation in the new/dwarf walls. Then it's the eaves space with no insulation in the roof/walls under the roof tiles. If that makes sense.

Gumbo

https://www.boards.ie/discussion/comment/121281495#Comment_121281495

Does it travel down the dwarf walls and across the floor of the crawl space?

gandalfio

The insulation in the walls/ceiling is kingspan. The floors in the eaves/storage space are osb boards with the original rockwool insulation underneath the osb boards.