Have a project pending and brainstorming on insulating means for an elevated wood floor. Needing the flooring insulated very well between the joists. Been thinking about mineral wool between joists largely due to it's breathability. However, also thought momentarily on rigid foam board for a few different reasons. One of which, would be the installation from the 'top side' of the floor would be much easier using the foam board as opposed to installing mineral wool. Would have ledger strips in place for foam board to sit upon. Could work from above with ease as opposed to the slightly more challenging installation mandate of installing mineral wool from above. If that was the route, thinking about installing hardware cloth-tacked in place- to hold insulation into position.
Entertained the thought of cut sections of foam tightly nestled between joists. However, I'm just not certain that would even be an option because of its resistance to breathability. However, if the foam R-value was appropriate, sections were cut to fit tightly and they were of an appropriate thickness would breathability even be a concern? Although the panels themselves would potentially prevent any meshing of cold to hot / vice versa...there are those wooden joists, which have a different r-value and possess the ability to move moisture, on each side of the panels.
How about my moisture membrane? What kind would be the best to use? Once the flooring is in place on top of these joists, I'd have no way to get back to the insulation. I'm just leaning really hard towards the mineral wool rolls but simply love the idea of installation practicals of the foam board.
Entertained the thought of cut sections of foam tightly nestled between joists. However, I'm just not certain that would even be an option because of its resistance to breathability. However, if the foam R-value was appropriate, sections were cut to fit tightly and they were of an appropriate thickness would breathability even be a concern? Although the panels themselves would potentially prevent any meshing of cold to hot / vice versa...there are those wooden joists, which have a different r-value and possess the ability to move moisture, on each side of the panels.
How about my moisture membrane? What kind would be the best to use? Once the flooring is in place on top of these joists, I'd have no way to get back to the insulation. I'm just leaning really hard towards the mineral wool rolls but simply love the idea of installation practicals of the foam board.
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