On investigating the state of the building frame, what had seemed like a little bit of wet rot turned out to be worse than expected with some timbers rotted right through.
The rot appears to be due to two causes, leaks in the guttering and cedar shingles that had been nailed directly onto the original ship lap cladding which trapped water between the two.
In place of the ship lap cladding, OSB board was attached to act as a sheathing, this also acted to add extra stability to the structure. Once complete, the props were removed and the walls remained standing :-)
The final part of the wall building process that was completed on this trip was to put up house wrap to keep out the rain.
The final wall layers will be: (from outside to inside)
- Thermowood ship lap
- Battens
- Exterior building wrap
- OSB sheathing
- Wood frame insulated with thermofleece
- Inner vapor barrier membrane
- Plaster board.
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