Monthly Archives

March 2008

Lumberjacking

By Living Sod Roof, Reciprocal Roof

The days have been packed recently. A few days ago, I began cutting down pin oak trees for the living roof of my cob house. On Tuesday morning, Dan lent me a hand and we took down three trees in an hour and a half, despite the ground being quite muddy.

This morning, I went out alone and cut down a tricky tree more centrally located in a dense patch of pin oaks. It was very tough to bring down, since it was hung up in the tops of the trees. I walked back to the village, and thankfully Liat offered some help, and together we shook and pulled and dragged the tree down. This afternoon, I cut a smaller tree and easily toppled it. That leaves me with five total trees thus far. Hopefully I will be able to get at least two rafter poles from each. I need between twelve and sixteen of them.

lumberjacking01.jpg

The patch of land that I have been doing the cutting is very dense with pin oaks. Some are growing mere inches from one another. Pin oaks are tall and straight, making them appropriate for the reciprocal roof I want to build. The toughest part of the job is not so much the cutting, but the toppling of the trees, since they are so tangled with their neighbor trees. All of the cutting has been done with a bow saw, a hatchet, and a smaller saw for branches. It has been gratifying work.

lumberjacking00.jpg

Unfortunately, I don’t yet have a plot of land for my house. I have been in talks with another member here who is interested in letting go of his warren, since he has determined that it’s not worth the cost to him for the small amount of gardening he does on it. So there is that possibility. Because it’s not definite, I have not bothered with transporting the trees back to the village. (A damp ground doesn’t really help with that, either, though, which is probably the real reason I haven’t carted them back.)

We shall see.

The latest cob house designs

By Design

In an earlier post about my cob cottage plans, I mentioned that I had some new design ideas. I’ve done some thinking about a new shape for the house, this latest (and perhaps final?) design being more like a spiral. (Or a scotch tape dispenser if you think about it.)

Check it out:

cob house floorplans

Originally, the design was more like a rounded rectangle, with the entrance in the southeast, opening directly into the room. This time, the door is in the northeast, opening into a curve of the house. This gives me a little space for shoes, jackets, etc., and it also means that people won’t immediately see the whole room upon entering. It’s a more gentle transition from outdoors this way. I’m pretty excited about this. It changes the feel of the whole building.

I also settled upon a reciprocal roof design. I don’t have an exact plan yet, but I have a good feel for how many beams I’ll need. I’ll probably get some oak wood poles from our land here if all goes well. Using a cart, I will transport these poles to my plot, and strip the bark before constructing the roof. I’m not totally sure what the layers above the poles will look like, but I’m still planning on having a living roof, probably with an EPDM membrane. EPDM is a type of synthetic rubber product, intended for waterproofing (ponds, for example). I should note that this product is the least exciting part of the roof construction. It’s a petroleum product. Unfortunately, I have not discovered any detailed instructions for creating a living roof without synthetic materials, but it must be possible since it’s been done in the past in places like Sweden. So instead of taking a gamble, I am going to be using EPDM, which is apparently very durable and has a long lifespan. Overall, I intend to use as few human-made, synthetic building materials in my cottage as is possible. EPDM is one exception, though.