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Passive House

Passive House | Passivhaus

MBC Timber Frame | Passive House

Passive House | Passivhaus Build

A Passive House is a precisely engineered and detailed structure that is highly insulated, cold bridge free and requires less energy for space heating or cooling.

Building a Passive House does not cost extra in the long term as there is no need to install a complex heating system. Finances saved are invested into essential Passive House Elements, the cost of which is quickly recouped within a few years of building completion.

Passive House Non Structural Essential Elements

Thermal Insulation

All opaque building components of the exterior envelope of the house must be very well-insulated. This means a heat transfer coefficient (U-value) of 0.15 W/(m²K) at the most, i.e. a maximum of 0.15 watts per degree of temperature difference and per square metre of exterior surface are lost.

Passive House Windows

The window frames must be well insulated and fitted with low-e glazings filled with argon or krypton to prevent heat transfer. This is achieved by a U-value of 0.80 W/(m²K) or less, with g-values around  (g-value= total solar transmittance, proportion of the solar energy available for the room).

Ventilation Heat Recovery

Efficient heat recovery ventilation is key, allowing for a good indoor air quality and saving energy. In a Passive House, at least of the heat from the exhaust air is transferred to the fresh air again by means of a heat exchanger.

Airtightness of the Building

Uncontrolled leakage through gaps must be smaller than 0.6 of the total house volume per hour during a pressure test at 50 Pascal (both pressurised and depressurised).

Absence of Thermal Bridges

All edges, corners, connections and penetrations must be planned and executed with great care, so that thermal bridges can be avoided. Thermal bridges which cannot be avoided must be minimised as far as possible.

MBC Passive Foundation & Slab System

Our passive foundation and slab is a PassivHaus certified system, designed to thermally encase the foundation in high performance expanded polystyrene (EPS) insulation, which delivers the lowest U-Vaule currently available at 0.105W/m2K.

MBC Passive Wall System

The MBC Passive Wall system delivers a U-Value of 0.12W/m2K and is designed to perform to its optimum level when used in tandem with our Passive Foundation & Slab system.

MBC Passive Roof System

The MBC Passive Roof system delivers a U-Value of 0.10W/m2K and is suitable for all roof designs (flat, pitch, barrel vault, etc), ensuring your desired building design remains unchanged.

A Passive House is fitted with a variety of non structural high performance essential elements, which include:

  • Triple Glazed Windows
  • Thermal Insulation Barrier
  • Airtight Membrane & Tapes
  • Mechanical Ventilation & Heat Recovery (MVHR)

 

 

Passive House | Passivhaus Components

 

Passive Foundation

MBC’s passive foundation is a PassiveHaus certified system, designed to thermally encase the foundation in high performance expanded polystyrene (EPS)…

Passive Wall

Delivering a U-Value of 0.12W/m2K and designed to perform to its optimum level when used in tandem with our Passive Foundation system…

Passive Roof

400mm thickness of Cellulose Roof Insulation is precision fitted to overlap with the 300mm Cellulose Insulation of the Passive Twin Wall System…

Airtight System

Air tightness is achieved with the careful application of an internal airtight membrane sheeting, which overlaps at joints and junctions, and is sealed with airtight tape…

Passive House Technical Details

View a detailed cross section diagram of our Passive House Twin Wall system…

Thermal Envelope Insulation

Information about the “thermal envelope” and “thermal bridging”…

Passive House Blower Door Test

Airtight Home Standards

Information about the Passive House Blower Door Test…

Passive Ventilation

Understanding “MVHR” – Mechanical Ventilation and Heat Recovery…

Discuss your project with us

MBC specialise in the production of Timber Frame Passive Houses and High Thermal Efficiency Timber Frame Houses throughout the UK, for people looking to benefit from huge energy savings and reduce their heating demands by up to 90%.

What you Get

Passive House Essential Elements

 

Non Structural Elements of our Passive Homes

Thermal insulation

All opaque building components of the exterior envelope of the house must be very well-insulated. This means a heat transfer coefficient (U-value) of 0.15 W/(m²K) at the most, i.e. a maximum of 0.15 watts per degree of temperature difference and per square metre of exterior surface are lost.

Passive House Windows

The window frames must be well insulated and fitted with low-e glazings filled with argon or krypton to prevent heat transfer. This is achieved by a U-value of 0.80 W/(m²K) or less, with g-values around 50% (g-value= total solar transmittance, proportion of the solar energy available for the room).

Ventilation Heat Recovery

Efficient Heat Recovery Ventilation is key, allowing for a good indoor air quality and saving energy. In Passive House, at least 75% of the heat from the exhaust air is transferred to the fresh air again by means of a heat exchanger.

Airtightness of the building

Uncontrolled leakage through gaps must be smaller than 0.6 of the total house volume per hour during a pressure test at 50 Pascal (both pressurised and depressurised).

Structural Elements of our Passive Homes

Absence of Thermal Bridges

All edges, corners, connections and penetrations must be planned and executed with great care, so that thermal bridges can be avoided. Thermal bridges which cannot be avoided must be minimised as far as possible.

Passive Foundations

Our Passive Foundation and slab is a PassiveHaus certified system, designed to thermally encase the foundation in high performance expanded polystyrene (EPS) insulation, which delivers the lowest U-Vaule currently available at 0.105W/m2K.

Passive Wall System

The MBC Passive Wall system delivers a U-Value of 0.12W/m2K and is designed to perform to its optimum level when used in tandem with our Passive Foundation & Slab system.

Passive Roof System
The MBC Passive Roof system delivers a U-Value of 0.10W/m2K and is suitable for all roof designs (flat, pitch, barrel vault, etc), ensuring your desired building design remains unchanged.

A super insulated, timber frame house, providing exceptional energy efficiency

Designed and engineered in accordance with current building regulations

Manufactured in a controlled factory environment, ensuring superior quality craftsmanship

An affordable, competitively priced building option

Erected on site at an unparalleled rate when compared to conventional block construction

An environmentally conscious and forward thinking sustainable approach

Get in touch with MBC Timber Frame

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