R
ronda-melmag19 Sep 2013 13:45Hello :-)
I am still in the "Buying the house" planning phase. Since the house is a bit older (from the 1950s), the current insulation is basically nonexistent.
The house has a pitched roof covered with slate, and at the ridge, you can see just wooden boards behind the rafters. Since the space is only usable as a storage room anyway, I think the simplest solution is to lay walkable insulation boards on the concrete ceiling and call it done.
On the upper floor, there is still the sloped roof section – I believe these slopes are simply covered with nailed (plywood or chipboard) panels, and behind them, I assume there are just empty rafters. The easiest option would be to drill holes and blow in loose-fill insulation, but what about the vapor barrier? How can I check if there is one? Is it possible to add one on the inside afterwards? Or do I have to expose the rafters and then rebuild from the outside with vapor barrier / insulation / OSB board?
Also, since the ceiling up to the ridge extends into the rafters, won't that create a thermal bridge? Would it be better to leave the rafters exposed at the ceiling instead?
Then there is the basement – since the property is on a slope, the basement is exposed by about 80cm (31 inches, including the ceiling) on the street side. On the exposed side, the basement is completely free and even has an entrance with a small vestibule there. The basement side facing the garden is backfilled (like a terrace, then it slopes steeply downward) and is only exposed up to about 1 meter (39 inches) there. Is it possible to apply exterior wall insulation up to the soil line and insulate the rest from the inside? Or should the basement walls be insulated from the inside while overlapping the exterior insulation slightly (for example, basement ceiling plus 20cm (8 inches))?
Simply insulating the basement ceiling would be inconvenient since the heating system and my laundry room are planned to be there.
Whom should I consult for advice on this? Also regarding materials: wood fiber / hemp / mineral wool / extruded polystyrene (in that order according to gut feeling).
I am still in the "Buying the house" planning phase. Since the house is a bit older (from the 1950s), the current insulation is basically nonexistent.
The house has a pitched roof covered with slate, and at the ridge, you can see just wooden boards behind the rafters. Since the space is only usable as a storage room anyway, I think the simplest solution is to lay walkable insulation boards on the concrete ceiling and call it done.
On the upper floor, there is still the sloped roof section – I believe these slopes are simply covered with nailed (plywood or chipboard) panels, and behind them, I assume there are just empty rafters. The easiest option would be to drill holes and blow in loose-fill insulation, but what about the vapor barrier? How can I check if there is one? Is it possible to add one on the inside afterwards? Or do I have to expose the rafters and then rebuild from the outside with vapor barrier / insulation / OSB board?
Also, since the ceiling up to the ridge extends into the rafters, won't that create a thermal bridge? Would it be better to leave the rafters exposed at the ceiling instead?
Then there is the basement – since the property is on a slope, the basement is exposed by about 80cm (31 inches, including the ceiling) on the street side. On the exposed side, the basement is completely free and even has an entrance with a small vestibule there. The basement side facing the garden is backfilled (like a terrace, then it slopes steeply downward) and is only exposed up to about 1 meter (39 inches) there. Is it possible to apply exterior wall insulation up to the soil line and insulate the rest from the inside? Or should the basement walls be insulated from the inside while overlapping the exterior insulation slightly (for example, basement ceiling plus 20cm (8 inches))?
Simply insulating the basement ceiling would be inconvenient since the heating system and my laundry room are planned to be there.
Whom should I consult for advice on this? Also regarding materials: wood fiber / hemp / mineral wool / extruded polystyrene (in that order according to gut feeling).
Hello,
Best regards
ronda-melmag schrieb:Vague hypothetical statements rarely contribute to finding economically viable solutions overall!
... I think it’s easiest to simply lay walkable insulation boards on the concrete ceiling and then it’s done...
ronda-melmag schrieb:Why, if considered from an overall cost-effectiveness perspective?
... Only insulating the basement ceiling would be unattractive since the heating and my laundry room are planned there...
ronda-melmag schrieb:An independent energy consultant who is also a building services (MEP) planner ;-)
... Who should I consult for advice? Also regarding materials: wood fiber / hemp / mineral wool / Styrodur (in that order from gut feeling)
Best regards
R
ronda-melmag8 Oct 2013 15:31€uro schrieb:
An independent energy consultant,
best regards.The guy took a quick look at the house –
recommendation – insulation 20 cm (8 inches), (I was already at that point)
achievable KfW 100 standard...
offer for additional services – energy balance calculation
– calculation for KfW efficiency house 100
– component verification for: individual measures KfW P152 energy-efficient renovation
my response – everything I need for the KfW application
I’m curious to see how much this will cost...
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