Back at the beginning of this year I wrote about my forays into house planning. It has taken me over 7 months and many, many edits but I have finally come up with a layout that I like, that gives me what I want, and that puts the house size at under 2500 square feet. In fact, this only just happened two days ago! It was one of those Eureka moments where I was hit with inspiration, ran to get a pencil and some graph paper, and realized I’d finally solved many of the issues I was struggling with.
The timing was perfect, too. Today we interview two design/build firms. The first is the EcoNest company, run by Paula and Robert LaPorte. These guys are well-known in the natural building community, and we are fortunate that they are in the area this month giving a series of workshops. They are stopping by this evening with their local certified builder (there are not many builders in North America trained in this procedure and we are so fortunate that one of them is located just 30 minutes away!). I am really excited about meeting with them and hope they can reassure my husband that this isn’t some freaky hippie experiment in building that could cost us a fortune down the road!
In my previous house-planning post I wrote that I was looking at strawbale and cob for the infill material. Then I discovered “light clay”, which is also called straw-slip or chip-slip depending on the fibre ingredient. This is what the EcoNest folks specialize in. Both use a clay slip as a base (a light, watery mixture of clay and water) in which either straw or wood fibre is mixed so that the fibres are coated evenly with the slip. The beauty of this stuff is that you can pack it into forms and thus reduce time and labour costs considerably. Apparently, it also has a higher R-value for insulation than either strawbale or cob. It does not require a netting or base coat to “rough up the surface” so that plaster can be applied. What really appeals to me is that we could supply the wood chips from our own property. However, we need to compare the cost of purchasing enough straw for the project versus time to gather and chip the wood plus cost of renting an industrial-strength chipping machine.
The other company we are interviewing is a local design/build outfit that has done several projects in the area that we like. They claim to be able to do “green building” but this may turn out to mean conventional stick-framing and house-wrapping with simply using less harmful and lower embodied-energy materials. Nevertheless, I’m open to hearing what they have to say, and seeing how this option compares with the above.
From these interviews I hope to settle on 1) what infill material will be used, 2) how big the house will be, and 3) how much it will cost. The latter two are obviously related quite closely, while the first point will determine the nature of that relationship. My understanding is that building green is no more costly than any other quality timber-frame home but hopefully we’ll find out soon. We know roughly what we want to spend, but whether that is realistic based on our desires remains to be confirmed. We may need to increase our budget. Alternatively, we may decide to do some inexpensive finishing to bring down the budget, with the aim to remodel later when we have more cash-in-hand. Given what we are living in now, anything without mould or rodents is an improvement!