Same deal as the floor. Cut with a handsaw and whack it in. I tried to get them tight enough stay in on their own, but if you make them fractionally too big then it's a fucking nightmare, so mostly I cut them 10mm small and just used an old nail in the side of the rafter to keep it in place until I box them in.
Some of the insulation I had got off Freecycle ended up being slightly thicker deeper than the rafters, which was super annoying. In the end I dug out some pine battens I had under the bed from a bed slats project year ago and they turned out to be not only the exact right width, but also already cut to EXACTLY the right size. I nail gunned these to the rafters and they sorted it all out and looked nice to boot.
Same deal as the floor. Cut with a handsaw and whack it in. I tried to get them tight enough stay in on their own, but if you make them fractionally too big then it's a fucking nightmare, so mostly I cut them 10mm small and just used an old nail in the side of the rafter to keep it in place until I box them in.
Some of the insulation I had got off Freecycle ended up being slightly thicker deeper than the rafters, which was super annoying. In the end I dug out some pine battens I had under the bed from a bed slats project year ago and they turned out to be not only the exact right width, but also already cut to EXACTLY the right size. I nail gunned these to the rafters and they sorted it all out and looked nice to boot.
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