ᐅ Exposed wooden beam ceiling on the ground floor – Insulation structure in the upper floor beneath the screed?
Created on: 26 Sep 2013 13:52
P
Philiboy83P
Philiboy8326 Sep 2013 13:52Hello,
Next week, we plan to start the work for the screed installer on the upper floor.
We have a wooden beam ceiling with a Siljan plank floor (visible open beams from below with exposed sheathing). On top, a total floor buildup of 19–20 cm (7.5–8 inches) is planned, as many installation pipes run through the area, for example, 6 cm (2.4 inches) pipes for the ventilation system.
We were advised to use 12 cm (4.7 inches) of EPS DEO100 035 rigid foam insulation in two layers, for example, 6 + 6 or 8 + 4 cm (2.4 + 2.4 or 3.1 + 1.6 inches), filling cavities around pipes with loose fill. A building foil should be placed on top. The heating installer will then attach the warm water underfloor heating pipes to this foil, followed by 6–6.5 cm (2.4–2.6 inches) of screed plus tiles or laminate flooring. Of course, a PE edge insulation strip is included. The screed will be a cement-based screed (earth-moist).
Now the questions: Should we use only DEO100 insulation without impact sound insulation (DES)? If impact sound insulation is needed, how thick should it be?
And another question: We will have a freestanding bathtub type Paris standing on four feet. Should stronger insulation be installed underneath it? We were told that impact sound insulation might compress and cause the screed to crack...
Regards
Next week, we plan to start the work for the screed installer on the upper floor.
We have a wooden beam ceiling with a Siljan plank floor (visible open beams from below with exposed sheathing). On top, a total floor buildup of 19–20 cm (7.5–8 inches) is planned, as many installation pipes run through the area, for example, 6 cm (2.4 inches) pipes for the ventilation system.
We were advised to use 12 cm (4.7 inches) of EPS DEO100 035 rigid foam insulation in two layers, for example, 6 + 6 or 8 + 4 cm (2.4 + 2.4 or 3.1 + 1.6 inches), filling cavities around pipes with loose fill. A building foil should be placed on top. The heating installer will then attach the warm water underfloor heating pipes to this foil, followed by 6–6.5 cm (2.4–2.6 inches) of screed plus tiles or laminate flooring. Of course, a PE edge insulation strip is included. The screed will be a cement-based screed (earth-moist).
Now the questions: Should we use only DEO100 insulation without impact sound insulation (DES)? If impact sound insulation is needed, how thick should it be?
And another question: We will have a freestanding bathtub type Paris standing on four feet. Should stronger insulation be installed underneath it? We were told that impact sound insulation might compress and cause the screed to crack...
Regards
P
Philiboy8326 Sep 2013 14:33Oh, and for impact sound insulation, there is also a mineral wool board from Rockwool available.
Philiboy83 schrieb:
...... and then there’s 6–6.5 cm (2.4–2.6 inches) screed plus tiles/laminate.... The upper floor covering of the screed plays a significant role in the design of the heating surfaces (flow temperature, mass flow, pipe spacing, heating circuit length, number of heating circuits, pipe diameter, etc.). Regarding overall efficiency and costs, it is definitely not a minor detail! Philiboy83 schrieb:
..... It was said that impact sound insulation might compress and cause the screed to crack... Who says that? What does the compressive strength of the screed have to do with the structural effect of the impact sound insulation? Best regards.
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