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How to detail for good levels of airtightness

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bere:architects new practical guide shows the keys to achieving Passivhaus levels

A new report by bere:architects sets out six areas of practical guidance for architects needing to achieve high levels of airtightness.

Here is an outline of what you will find in the report:

1. Detailing airtightness

bere airtightness report

This section of the guide highlights the key points architects and designers must take into account when producing air tightness details, and includes some useful working drawings. The guide stresses that an ‘overall strategy for airtightness should be developed and details designed for buildability’.

2. Air tests

bere airtightness report

Setting out guidance for how to commission airtightness tests, this section of the report includes when to carry out testing. It highlights to architects the importance of ensuring contractors include for three tests in their tender packages.

3. Responsibility

bere airtightness report

Where airtightness is concerned both the architect and the contractor have responsibilities in ensuring high levels of compliance. But this relies on good levels of communication throughout the design team.

4. Critical junctions

bere airtightness report

Using examples from their Passivhaus in Ebbw Vale, Wales, the practice share key critical details which will be useful for both the architect and the contractor.

5. Window installation

bere airtightness report

Window junctions are often the source of airtightness failures. This guide sets out how to best install windows to get around any airtightness issues.

6. Reputable suppliers and manufacturers

This final section will be useful for anyone needing to specify products for a Passivhaus or energy efficient project.

The guide shares bere:architects’ wealth of experience in Passivhaus construction. In order to create successful sustainable buildings, architects and contractors must share this experience, and learning from both successes and failures is equally important. This guide is a great start in disseminating the lessons learnt from past Passivhaus projects.

The full report is available for download from bere:architects’ website.

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