The first bit of hempcreting we did was underneath the box gutter. It had to be done prior to the plumber coming and fitting the gutter. Grant used hessian under the hemp and OSB to hold it securely as it dried. The OSB was then removed so it could be replaced with MgO boards. The plan was that the hessian would hold the hempcrete in place long enough to set up the boards. Unfortunately when we tried to place the boards it bowed out and the boards were unable to be secured flat. We realised that our first couple of mixes were too dry and the mix hadn't set. Grant ended up having to remove the hemp and then use some wool insulation (the only part of the renovation that doesn't use hemp-don't tell anybody).
It was disappointing, however you sometimes have to be pragmatic and just get on with it. Once the plan was adjusted and we used the alternative insulation it didn't take long to complete the box gutter.
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You can see the hessian, above that is the hempcrete insulation |
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The hessian and hempcrete was removed |
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The completed box gutter |
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