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Posts Tagged ‘passivhaus’

March 8, 2017

Types of air barrier in passivhaus!

Appropriate materials for air barrier in passivhaus It is crucial to specify the appropriate materials that will be used to form the air barrier. An air barrier must be impermeable or virtually impermeable (i.e. not allow air to pass through them at 50 Pascals). Typical air barrier materials include: Vapour control layer membranes (used in […]...

AUTHOR: Petra Vladykova Bednarova

February 28, 2017

Passivhaus airtightness standard in practice!

Design stage – identifying the air barrier strategy The key principle for achieving airtightness is to create a single, continuous and robust airtight layer (or air barrier). This layer surrounds…...

AUTHOR: Petra Vladykova Bednarova

February 14, 2017

Passivhaus: AP50, q50 and n50!

Air permeability pressure testing and passivhaus n50 To comply with UK non-domestic Building Regulations (Part L2) it is necessary to carry out an air permeability pressure testing on all buildings…...

AUTHOR: Petra Vladykova Bednarova

February 7, 2017

Airtightness Requirement for Passivhaus Certification!

Very low air leakage rates are required by the Passivhaus standard and must be demonstrated for each certified building by means of a “blower door” air tightness test. The air…...

AUTHOR: Petra Vladykova Bednarova

January 20, 2017

Passive house in warm climates!

The Passivhaus standard was initially developed for mid and northern European climates but the concept has been proven to work extremely well in hot climates as well. High levels of…...

AUTHOR: Petra Vladykova Bednarova

January 16, 2017

Summer overheating and shading in passivhaus!

A central part of the Passivhaus principle is to make use of solar gains in winter to reduce the heating demand. This can mean that there is a potential for…...

AUTHOR: Petra Vladykova Bednarova

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December 27, 2016

Tripple-glazing! Five steps to achieving Passivhaus on-site!

Tripple-glazing – step 3 This is possibly the single most expensive additional investment needed to achieve the Passivhaus standard. Fine tuning the window specification is an important part of achieving…...

AUTHOR: Petra Vladykova Bednarova

December 20, 2016

Five steps to achieving Passivhaus on-site! Super-insulation!

Super insulation – step 1 The first aspect of implementing a Passivhaus design that differs from standard UK construction is the amount of insulation that must be incorporated into the…...

AUTHOR: Petra Vladykova Bednarova

December 8, 2016

Passivhaus for contractors: Building services and sequencing!

Building services in passivhaus: ventilation, controls and indoor air quality Indoor air quality, which should be exceptionally good in Passivhaus buildings, will be spoilt if ductwork, mechanical ventilation with heat…...

AUTHOR: Petra Vladykova Bednarova

December 1, 2016

Delivering passivhaus requires integrated design!

Delivering passivhaus requires integrated design approach to ensure completion of the design Delivering a Passivhaus requires an integrated design approach; therefore it is unlikely to be possible to commence the…...

AUTHOR: Petra Vladykova Bednarova

November 22, 2016

Passivhaus: Certification requirements!

What is Passivhaus? Passivhaus is an advanced energy performance and thermal comfort standard for both residential and non residential buildings. The concept was inspired by a long history of vernacular…...

AUTHOR: Petra Vladykova Bednarova