Joists: making straight what was crooked

Joists are those bits of wood that span your room from wall to wall. The ceiling plasterboards are attached to them.

In our big bedroom, the joists were sagging quite significantly. They were not thick enough to span across the whole extension and hold up their own weight. They were sagging in the middle of the span by about 7.5 cm, or their own thickness.

That would be bad enough, but those same flimsy joists were also supporting a beam going in the other direction. And that beam had two posts resting on it that were supporting the whole roof of the extension. And that was rather worrying.

So we are now in the process of replacing the flimsy joists with much bigger ones, 20 cm thick. Plus two steel I-beams that will definitely be man enough to hold up the roof.

Back in July, we manoeuvred the I-beams up into the loft. Hilde was sitting up there manning the winch, while Alex and his dad made sure the beams didn’t hit anything on the way up through the balcony door and the big bedroom.moving the I-beam

They’ve been sitting there patiently, waiting for us to open up the edge of the roof on that side of the house. We need to extend the rafters there, and at the same time we can position the joists and get at the ends to nail them into the wall plate.

It takes a bit of doing to move the joists from the floor up into the loft. We each manage an end. One of them goes out through the balcony door (a very handy thing to have) and then we point the other end up into the loft. When enough of it is up there, Alex gets up into the loft and pulls it past the cross beam.

All it needs then is a bit of wiggling around to put it in the right place, and nail it in. Thankfully, they’re made of pine that isn’t very dense, so they’re not very heavy.nice and straight

Moving the steel I-beams is another story. That involved a trestle plank, some plastic tubing to function as rollers, and some rope to catch all of the above should it fall in mid span. With a bit of shoving and pulling, we did get it across the room.

We have replaced about half the joists now. They are also holding up the post that is holding up the roof. And it all looks a lot straighter and more secure. It feels like quite an achievement.

7 steps to meeting your spirit guide

Sitting on the Hag’s Chair at her temple, I could feel the power of the land rising through the hill beneath me. The power of the place enveloped me and flowed through me. And in that moment I heard her whisper in the wind: “I am your bones.” The Goddess who guides me is ancient. [...]

The domino house: external wall insulation

This year, we have dedicated our lives to making our house as energy efficient as we possibly can. We have chosen to retrofit our ordinary house from the 1930s with external wall insulation. The aim is to get as close to a passive house standard as possible.

This is not an easy thing to do. It would be far more practical to build a new house to a high efficiency standard and be done with it. Retrofitting involves a lot of fiddly work. And because the rest of the house is very much attached to the walls, things get in the way. We’re doing it because we love this house and because we can.

The gold standard for insulation involves insulating right down to the foundations of the house.EWIcanisters We had to dig down far enough to reach them.

We covered the foundations in a spray foam that comes in two canisters. The two chemicals mix in the spray nozzle and turn into a hardened foam within seconds. Since we were doing whole walls at a time, Alex did the spraying while Hilde followed him closely with a wheelbarrow containing the two canisters.

The next job was to make the joins between the windows and the wall air tight. Our new windows are state-of-the art triple glazed, and well sealed. It would be a shame to lose heat through the cracks around them.EWIWhiteSheet

The process started by repairing the wall where the window replacement had left an uneven surface. This was mostly done with cement render, but touching the window frames we used a fibrous filler.

Modern windows of that type are built with a small slot on the edge of their frames. This slot is there to receive the gasket that is attached to an airtight membrane. The job here was to painstakingly insert the gasket into the slot to make the seal. The membrane was then glued to the wall with black silicone glue. Most of this was Hilde’s job.EWIDominoWalls

The main event of the insulation project is covering the walls with polystyrene boards. We are using 8 cm thick boards of expanded polystyrene with anthracite, which is more insulating than the ordinary white stuff. We are fixing the boards to the wall in two layers, three on the North facing wall.

The polystyrene is attached to the wall with special plastic fixings. Metal is not suitable, as it would provide a ‘cold bridge’. When the screw gets cold, it conducts the cold into the wall and reduces the efficiency of the insulation.EWIFixings

For each fixing, a hole is drilled and filled with expanding foam. Then the plug part of the fixing is hammered in, followed by the plastic spike that holds everything in place. The white fixings on the black boards do look like domino pieces. Virtually every visitor comments on the look, which is, thankfully, temporary.

Underneath the polystyrene, a vapour proof barrier provides the airtight layer. It’s a thin sheet of white ‘breathable’ plastic. It has to be carefully layered together and detailed around the windows, so that no air can get trough. Every tiny leak will make all the work we have done less effective.

The air tight barrier is also carried on over the top of the walls and into the loft. There, it will be joined with the loft insulation, using more of that spray foam from the two canisters.EWIRafterExtensions

In order to get the vapour barrier into the house, we need to take the edge of the roof off. And while we’ve got the tiles down, we are also extending the eaves of the roof to cover the walls, which are now, of course, more than 16 cm thicker than they were. Alex is practising his carpentry skills: measure twice, cut once.

We have employed a professional plasterer to render over our dominoes. The final look very much depends on the smoothness of the finish. There is no way we amateurs could do it justice.

Our plasterer has covered a few walls now, and we are getting an idea of what the finished product is going to look like. We can’t wait for the colour coat to go on. That will (hopefully) improve the aesthetics, and also provide a protective, self-cleaning outer layer to our insulation.EWIRender

All of this is still ongoing. We have completed some of the walls, but more needs to be done. We’ll be working on the roof and the insulation into the winter, as other things depend on certain parts of it being finished.

We’ve pretty much been through all the steps once, though. Hopefully things will go smoothly and we’ll be able to show you what the house will look like pretty soon.

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“Ritual. It’s an interesting word. It has a certain flavour to it, heady and dangerous.” - from Ritual Toolkit Our culture, and as a consequence most of us, are a bit funny about emotions. We don’t quite know what to do with them. We are afraid of them, scared that they will get someone hurt. So [...]

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