Moisture safety in a highly insulated cold attic

Lars-Erik Harderup, Jesper Arfvidsson & Lars-Erik Harderup
Damages, caused by moisture and mould, in attics have increased in Sweden during the last decades. The main reasons are thicker thermal insulation between the living space and the attic and lack of the heat and ventilation effects from a warm chimney. Cold attics are ventilated to avoid that heat leakage from the living space heats up the outer roof with snow melting and icicles as result. Using traditional ventilation the climate in the well...
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