Friday, 11 April 2014

More pointing

I finally had time this evening to get three buckets of pointing done up in the gallery. Yesterday I was in Nuremberg, Wednesday Bayern were playing Manchester and on Tuesday Dortmund were playing Real Madrid. Today there were no excuses. I have now more or less finished the third bag of the special pointing mortar. I'll use up the other two bags and after that I'll mix my own. I have enough sand, cement and Mariensteiner. I'll mix up a load of it dry in the mixer. I can carry that up to the gallery and then use the hand mixer above to mix it 'on demand'.

Other than pointing, today Niedermaier's men were back. This time to install a new sensor in the heating upstairs. The sensor measures the rate of flow of liquid in the solar modules. The advantage of this is that we can finally figure out how many kilowatts the modules are producing. Given that a litre of oil has about ten kilowatts, we can quite easily figure out how much oil we are saving. While they were busy installing, I saw that the back of the user interface LCD module on the heater has three RJ45 ports - meaning that it is intended that something is connected via network. I had a look on the Internet and saw that Solvis sells a netbox which connects to the heating over network. The netbox itself gets an IP address via DHCP from the local network. I'm not quite sure if the netbox itself gives the heater an IP address, but I fully intend to see what happens if I connect the heater to my laptop and see what happens over the ethernet port with wireshark.

Sunday, 6 April 2014

Starting the wall in Sandra's office

The brick fire wall originally served as a fire break between the hay barn (agricultural use only accordingly to the planning office) and the house itself. Because those were two separate 'uses', there had to be a fire wall between them. When we went to get planning permission, the main issue was convincing the planning office to convert the agricultural use into domestic use - i.e. meaning that the entire house would be domestic. When the planning office approved our plans the fire wall became redundant as a fire wall. It still separates the living room/kitchen/bathroom from the bedrooms. It is also made of brick - not the nicest brickwork ever (it wasn't ever intended to be seen or admired) - but worth pointing (like in the kitchen).

For Sandra's office (up in the gallery) it was hard to decide what to do with the back wall. Theoretically I could just have clad the whole thing with slabs and plastered it. Or I could have clad it in timber. That would have meant that we would lose the beams - which did have a bit of character. Pointing the wall and cleaning the bricks (like in the kitchen), however, wasn't really an option either, because when we were doing the roof, the top of that fire wall (the triangle/gable) had to be built up and flattened with mortar at the top, so the roofing felt could lie something and not eventually sag. Without knowing what we were going to do with that wall, and under time pressure, we built up the top of the wall without paying any attention to how flush we were with the gallery side. This mess means that exposing the brick won't work. I then decided to point the bricks and then whitewash the whole thing. This would mean still having the brick effect, and the white colour will hopefully look well behind the black beams.

The decision gave rise to more problems. Uli and Daniel weren't briefed on this when they did the wires. They had proceeded on the basis that the wall would be plastered or cladded - not exposed. Thus, they hadn't paid much attention to how they wires were buried in the wall. This meant that the first job (after scraping out the joints) was to hide the wired, deep in the joints. I also had to remove the sockets and distributor boxes, as they were too far out (again, they were placed for plastering, not for exposed brick).

Right now, I have the bottom bit of the wall pointed and the wires are (hopefully) successfully buried and the sockets/boxes set. The pointing is relatively slow going compared to the kitchen. The old mortar was in worse condition that it was in the kitchen, meaning I have to take out more of it to get a good basis for the new mortar. It looks like being about three or four days work. Other than that, I also managed to get the last two sockets working in the kitchen. By taking up one of the OSB boards in the gallery, I found the connection that was causing the problem. I'm going to keep tipping away with the pointing - an hour or two a night - and see how far I get. I bought the same Hasit 982 pointing mortar for the job (five bags), but once I get through what I have, I'll mix my own cement. The 982 is great for pointing (it keeps the right consistency for a long time) but too expensive at €11 a bag, especially when everything will be whitewashed anyway.