Passive House Roof Insulation

Passive houses are working examples of dwellings with very good thermal insulation standards.

Passive house roof insulation.

Thermal insulation for passive houses must be extremely effective and so thick walls are built up using super insulation to achieve high r values. Inadequate insulation and air leakage are the main causes of heat loss in homes. If you re familiar with any passive house projects you may be thinking about double stud walls that are a foot thick or regular walls with 6 to 12 inches of rigid insulation on the outside. Passive house has a reputation for requiring ungodly amounts of insulation.

These key principles are high levels of thermal insulation passive house windows heat recovery ventilation airtightness and thermal bridging free design. The level of insulation in passive houses u values thermal transmittance of external walls floor slabs and roof areas of passive houses range from 0 10 to 0 15 w m k for central european climate. These values may be slightly higher or lower depending on the climate. Insulation acts as a barrier to heat flow reducing heat loss in winter to keep the house warm or reducing heat gain in summer to keep the house cool.

The house at cornell tech photo by field condition. A highly insulated eaves joint cepheus project horn austria architect treberspurg vienna. Examples of constructions suitable for passive houses with an excellent thermal insulation. It grew out of the superinsulation movement after all.

Insulation specifying high levels of insulation for the thermal envelope is at the heart of good passive design.