[GSBN] Air tight window sealing - ideas and experiences.

[Derek Roff]

Hi, Lars,

Is the Danish air leakage standard based on interior floor area of the structure, or on some other measurement?  For the average house, green or otherwise, most air leakage comes from the interface between materials.  Cracks at the top and bottoms of walls, around doors and windows, fireplaces, bathtubs, and so on.  I’m not sure if you are referring to trying to seal these kinds of joints/cracks in your description of the Danish traditional method.  I would like to understand more.

Derek

Derek Roff
derek at unm.edu<mailto:derek at unm.edu>




On Jun 27, 2018, at 3:48 AM, Lars Keller <larskeller at gmail.com<mailto:larskeller at gmail.com>> wrote:

The Danish traditional method is the following:

Inside.
- lime mortar / wooden fillet
- stuffing with (tarred) hemp-fibres
- air lime mortars
Outside

In the recent years the Danish building regulations have introduced airtightness. At the moment the requirement is max 1,0 liter pr m2 pr second @ 50 pascal, and the (voluntary) low energy class has 0,5 l m2 s.

My question is if anyone has any methods with sustainable methods that creates a water diffusion open airtight sealing ?

Best, Lars

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