The project is a 25' x 25' - 1 1/2 storey post beam with wattle and daub with shed (lean-to) roof. Insulated slab on grade. Mezzanine for bedroom. Balloon frame without interior divisions (minus bathroom). I'm combining wattle and daub for exterior wall followed by straw bale interior insulation.
I've been mingling with a very skeptical contractor. He's deflated my balloon a little with technical points.
It was mentioned that conventional practice for concrete/wood contact requires a membrane.
Similarly, daub connects to post for its entire length. Wouldn't the daub separate from post with thermal contraction, causing air leaks?
Then there's the lime putty that may seal but I'm having mental image pictures of hairline cracks at each posts haunting my nights.
Who has experience with wattle and daub on that subject?
In my recent studies I've postulated the principle that clay-on-straw regulated its internal moisture as clay was more hydrophilic than straw and would suck moisture through capillary action, but since I'm thinking about encasing bales between a daub wall and a modern dry wall finish for squarity's sake, I'm pondering whether I'm making a mistake.
I would consider a clay and lime finish but I have a lot of difficulty with organic curves or ye ol' tyme lumpy wall. I see many lumpy haywall products out there. Don't like it. Has anyone overcome this or found a solution for a smooth interior finish?
What kind of modern solutions exist for wattling?
I drew up the idea of drilling beams and inserting 1/4 inch dowels laterally at every 4 inches. Like a ladder. I do not want to weave 2000 square feet of lattice. I thought of buying or finding scrap garden lattice to slap on top of that. Also thought of furrings/strapping. What says you?
Thank you for taking the time to read and share your passionate ideas about green buildings.
I saw your other construction suggestions such as pièce sur pièce but tend toward material that is both local and whom one man can lift without machinery.