Sorry to lower the intellectual tone but going back to MAPJ's council houses, when you add 100mm of insulation and 100mm of brick to the outside of a house what happens when you get to the roof?
Bang on. A roof extension, though is doable and not necesssarily expensive (you need it for the ends, not for the eaves). For a partial-insulation scenario I had costed, it was between 5% and 10% of the total. (That is in Germany, though.)
Sorry to lower the intellectual tone but going back to MAPJ's council houses, when you add 100mm of insulation and 100mm of brick to the outside of a house what happens when you get to the roof?
Bang on. A roof extension, though is doable and not necesssarily expensive (you need it for the ends, not for the eaves). For a partial-insulation scenario I had costed, it was between 5% and 10% of the total. (That is in Germany, though.)
