Bauherr&-frau
2018-10-08 19:34:38
- #1
Hello dear ones,
we have now been offered the PP4 0.5 (also 36.5 cm) instead of the Ytong PP2 0.35 (36.5 cm) for better sound insulation. The PP2 has a λR of 0.08 (U-value 0.21) and the PP4 a λR of 0.10 (U-value 0.26). We are tempted by the higher sound insulation, but is the heat loss too high? Windows are equipped with a Ug of 0.6. The Energy Saving Ordinance 2016 allows a U-value of 0.28. Construction will be with an air-to-water heat pump + fireplace + (possibly decentralized ventilation with heat recovery).
What do you think? Couldn’t find anything on the internet or here. :-(
we have now been offered the PP4 0.5 (also 36.5 cm) instead of the Ytong PP2 0.35 (36.5 cm) for better sound insulation. The PP2 has a λR of 0.08 (U-value 0.21) and the PP4 a λR of 0.10 (U-value 0.26). We are tempted by the higher sound insulation, but is the heat loss too high? Windows are equipped with a Ug of 0.6. The Energy Saving Ordinance 2016 allows a U-value of 0.28. Construction will be with an air-to-water heat pump + fireplace + (possibly decentralized ventilation with heat recovery).
What do you think? Couldn’t find anything on the internet or here. :-(