ᐅ Expanded polystyrene (EPS) granules for varying structural floor slab heights
Created on: 4 Mar 2021 10:34
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Eyko123
Hello,
we are currently planning the ground floor floor construction in a single-family house that is being renovated. The house is only partially basemented, and the structural height in the basemented rooms is higher than in the non-basemented rooms. If we now install expanded polystyrene granulate (then underfloor heating and screed), there will be 12cm (5 inches) of granulate in the basemented rooms and 28cm (11 inches) in the non-basemented rooms. Can anyone tell me if this might cause problems because the granulate could settle unevenly over the years? Would it be an alternative to raise the non-basemented rooms with expanded polystyrene granulate to the same level as the other rooms and then install insulation boards everywhere?
Thank you! 🙂
we are currently planning the ground floor floor construction in a single-family house that is being renovated. The house is only partially basemented, and the structural height in the basemented rooms is higher than in the non-basemented rooms. If we now install expanded polystyrene granulate (then underfloor heating and screed), there will be 12cm (5 inches) of granulate in the basemented rooms and 28cm (11 inches) in the non-basemented rooms. Can anyone tell me if this might cause problems because the granulate could settle unevenly over the years? Would it be an alternative to raise the non-basemented rooms with expanded polystyrene granulate to the same level as the other rooms and then install insulation boards everywhere?
Thank you! 🙂
Phew, I would seriously think twice before choosing a dry system, especially with underfloor heating in mind.
I would continue to use either only pressure-resistant insulation boards or a combination with loose fill. If necessary, pay attention to relief joints or inserts. The costs for additional insulation should remain reasonable given the shown area.
I see no advantage to a dry system here, but several disadvantages.
I would continue to use either only pressure-resistant insulation boards or a combination with loose fill. If necessary, pay attention to relief joints or inserts. The costs for additional insulation should remain reasonable given the shown area.
I see no advantage to a dry system here, but several disadvantages.
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pagoni20205 Mar 2021 12:46I see... I don’t know the exact size since the adjacent rooms connect to other areas. Depending on the personal situation, costs would definitely be one of the factors, along with one’s own DIY skills, which are limited in my case.
In general, I agree that insulation panels are a good solution, but I was thinking more about the number of additional rooms with 28cm (11 inches) each, because at some point, 28cm (11 inches) insulation panels also have their limits.
@HarvSpec What problems do you see regarding underfloor heating, or what disadvantages do you mean? I’m always open to learning more...
As long as a professional company handles it and it’s not a DIY job, I would have it done according to their recommendations anyway. Plus, the way those rooms are used also plays a role...
In general, I agree that insulation panels are a good solution, but I was thinking more about the number of additional rooms with 28cm (11 inches) each, because at some point, 28cm (11 inches) insulation panels also have their limits.
@HarvSpec What problems do you see regarding underfloor heating, or what disadvantages do you mean? I’m always open to learning more...
As long as a professional company handles it and it’s not a DIY job, I would have it done according to their recommendations anyway. Plus, the way those rooms are used also plays a role...
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