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362 E 10th Ave
Vancouver, BC, V5T 4G5

604.558.1123

Bryn Davidson 604.728.0606

Mat Turner 604.999.1460

Passive House

'Passive House' is an international standard for energy efficient buildings where a house (or any other type of building) is so well insulated and air tight that it can function without a primary heating system.  Passive house projects deliver the highest level of comfort, and the most cost effective bundle of energy saving strategies.

Passive House (Passivhaus)

'Passive House' is an international standard for energy efficient buildings where a house (or any other type of building) is so well insulated and air tight that it can function without a primary heating system.  Passive house projects deliver the highest level of comfort, and the most cost effective bundle of energy saving strategies.
 

>> See Lanefab's Passive House Projects

>> See Lanefab's TEDx talk on 'Net Positive Projects'
 

Like LEED, BuiltGreen (or other rating systems) there are Passive House organizations, such as IPHACanPHI, or PHIUS, which can certify buildings - though many projects are built to the standard without going through certification.

In contrast with these other rating systems, the PH rating focuses on comfort and energy consumption only (vs. LEED which looks at a wider range of green building issues) but PH goes well beyond LEED in this area - usually resulting in projects that use 90% less energy than a typical building.

Passive House Window by Northwin

Passive House Window by Northwin

The typical passive house will have very thick walls and roofs, a fairly simple shape, and high performance windows and doors.  Typical walls might be 12" to 24" thick (R35 to R60) and roofs might be 18" to 36" thick (R50 to R100).  Windows are triple glazed or better, and doors usually have several levels of weatherstripping.

One of the key criteria for achieving the passive house standard is having an airtightness rating less than 0.6 ACH (air changes per hour... i.e. 0.6x the volume of the house). The airtightness is assessed using a blower door apparatus.

The energy efficiency targets were very specifically formulated such that the building sits in the 'sweet spot' which balances construction costs vs. performance.  By hitting the energy targets a Passive House can eliminate most of the cost of a conventional heating system (thereby offsetting much of the cost of upgrading insulation and windows).

See Lanefab's E.5th Passive Solar House and current Passive House Projects.

See Lanefab's passive house building systems below.

 

Lanefab Passive House Assemblies - Renovations

W8th PH - renovation wall - finished.jpg

The Lanefab PH wall assembly for renovations is ~16.5" thick and R48.

It is a double wall assembly, with an outer framed wall filled with dense packed cellulose insulation, and an inner wall (to hold the plumbing and electrical) which has batt insulation.

Lanefab Passive House Assemblies - New Construction

W8th PH - roof detail 1.jpg

For new construction we're using a combination of prefab structural insulated panels (SIPs) and Roxul mineral fibre insulation.  The walls are R48, and the roof is R74.

Remodeling and Home Design