Passive House Roof Insulation

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

Passive house roof insulation.

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. It grew out of the superinsulation movement after all. These key principles are high levels of thermal insulation passive house windows heat recovery ventilation airtightness and thermal bridging free design. Examples of constructions suitable for passive houses with an excellent thermal insulation.

These values may be slightly higher or lower depending on the climate. Passive house has a reputation for requiring ungodly amounts of insulation. 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. Thermal insulation for passive houses must be extremely effective and so thick walls are built up using super insulation to achieve high r values.

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. Passive house principles achieve superior energy efficiency and occupant comfort with stone wool insulation rockwool s mass wall enclosure system is certified by passive house institute phi and the details can be directly incorporated into your project. Inadequate insulation and air leakage are the main causes of heat loss in homes. The house at cornell tech photo by field condition.

An exemplar of correct detailing.