Passive House Floor Insulation

The monitoring of built passive house has shown that the insulation effect of the thick insulation layers meets exactly the expectation.

Passive house floor insulation.

1 foundation detail at denby dale the uk s first certified cavity wall passive house with a lightweight insulating concrete block at the wall to floor junction. The heat loss is indeed that very low it has been calculated and the buildings can be kept comfortable using the calculated low heat production capacity. Typical conventional insulation materials mineral wool polystyrene cellulose require layers of about 30 cm. To hit passive house insulation standard in sweden for example walls must be at least 335mm thick with insulation to get the desired effect.

A passive house is a building for which thermal comfort iso 7730 can be achieved solely by post heating or post cooling of the fresh air mass which is required to achieve sufficient indoor air quality conditions without the need for additional recirculation of air. State of the art vacuum insulation materials allow for very slender yet highly insulated. It s important to maximise passive solar gain meaning the sun is used as often as possible to heat the air and water the home consumes on a daily basis. The thickness can even be reduced to 20 cm with common polyurethane foam insulation materials.

3 200mm kingspan insulated. Whilst this can be prohibitive on small plots it s worth noting that only outer walls need to be insulated to this level so an open plan design can combat the loss of space from thicker walls.