External insulation goes on the dormer

People tell me that energy efficiency and insulation are "un-sexy" and "boring" (while renewable technologies are apparently more exciting).

I beg to differ! It's great watching all this insulation going on (180mm of Phenolic foam boards) - and just thinking how nice and warm it is going to be!

The big thing about insulation is avoiding any gaps. Here, the wall insulation makes a perfect junction with the insulation above the rafters (100mm boards of Celotex directly under the blue felt layer).

At the top of the dormer walls is the junction with the dormer roof above. This is a trickier junction, but we think we've got it covered...

Looking down on the dormer walls from above... The space at the eaves (between the ends of the counterbattens) has been filled with a high grade mineral wool to enhance the junction where roof insulation meets wall insulation beneath.