Plastering without gantry

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Plastering started

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Persistent Water Problems

Roof worker  Devroe has still some work to do.  It becomes urgent.  Otherwise the outside wall finishing touch will be in trouble;

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35 year Old Sawyer Machine Used Again

This old sawyer machine was bought by my fathers 35 years ago to build a yacht. Now I can use this one very well for some of the construction works (to cut wood wool)

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Click on the photo below for some more memories

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Results from the first Blower Door Test

Eventually we reach 0.58. Just below the passive house norm.  Seen the windows still need to be finetuned, and they showed some leaks, we can be optimistic to reach the norm in the final test after all technics and inside works are done.

De Fakro roof windows need to be checked as well. They showed some leaks during the tests.

Top Left : the blower door.  Top Right:  extra vapor screen  towards the cool storage.

Bottom left: measure tools.  Bottom Right: smoke sticks to detect leaks

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Blowerdoor test

Tuesday we will do the blowerdoortest in our house.

A blower door is a powerful fan that mounts into the frame of an exterior door. The fan pulls air out of the house, lowering the air pressure inside. The higher outside air pressure then flows in through all unsealed cracks and openings. The auditors may use a smoke pencil to detect air leaks. These tests determine the air infiltration rate of a building.

Blower doors consist of a frame and flexible panel that fit in a doorway, a variable-speed fan, a pressure gauge to measure the pressure differences inside and outside the home, and an airflow manometer and hoses for measuring airflow.

Diagnostic Tools

For a passive house, we should lose maximum 0.6 times the volume of the house per hour. Curious what this will give in our situation.

50 pascal is about 4.5 beaufort on sea-level.

Bft Windsnelheid (m/s) Winddruk (N/m2)
  Ondergrens Bovengrens Bovengrens
0 0.0 0.2 0.03
1 0.3 1.5 1.4
2 1.6 3.3 6.8
3 3.4 5.4 18
4 5.5 7.9 39
5 8.0 10.7 72
6 10.8 13.8 119
7 13.9 17.1 183
8 17.2 20.7 268
9 20.8 24.4 372
10 24.5 28.4 504
11 28.5 32.5 660
12 32.6  


> 660
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First part of the technical installation

The tubes for the ventilation are being placed. Hopefully there will be place enough for all technics in the shaft foreseen for technics

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Some background info on the insulation

De paper innsulation from climacell is made from recycled journals.  5610 Kg insulation was made from about 25500 journals. (220 gram on average). This means more than 83 years the newspaper every day 😉

For more info see:

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Let’s insulate

Joren helped with blowing in cellulose insulation.

Result: 374 bags of 15 kg, totaling  5610 kg if insulation. Will it be warm enough in our house ?

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A second swimmingpool

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