Hello everyone,
We are considering building a prefabricated house. At the moment, we are in the phase of "Who could it be."
First, I am comparing the wall constructions of different manufacturers.
Now, I would like to ask for advice. Can anyone recommend a good wall construction? Specifically, no polystyrene or plastic foil, good insulation, service layer, and high-quality materials.
Currently, we are leaning toward Kampa – Lignum Pure (the upgraded version compared to the standard).
Any help is appreciated.
Thank you.
We are considering building a prefabricated house. At the moment, we are in the phase of "Who could it be."
First, I am comparing the wall constructions of different manufacturers.
Now, I would like to ask for advice. Can anyone recommend a good wall construction? Specifically, no polystyrene or plastic foil, good insulation, service layer, and high-quality materials.
Currently, we are leaning toward Kampa – Lignum Pure (the upgraded version compared to the standard).
Any help is appreciated.
Thank you.
H
HausBammental3 Apr 2016 12:58Rübe1 schrieb:
In the end, it comes down to the budget. A good timber frame construction starts at around 1500 per square meter (approximately 140 per square foot), so, contrary to common belief, it is not cheaper than solid construction. However, the difference in energy efficiency is huge. Point 1: use your brain—someone offering 1100 per square meter (about 102 per square foot) can’t provide the same quality as someone charging 1500. No matter how tempting it sounds. Even professionals find it hard to compare. Years ago, there was a manufacturer who only mentioned in the fine print that VAT—then 15%—was added to all prices.
Wall structure beyond the installation layer: I always prefer a ventilated façade (also with plaster). If that’s absolutely not possible, then plywood fiberboards are acceptable. Never use expanded polystyrene foam (EPS).
Choose heavy insulation materials; they’re good for protecting against summer heat.
Ah, the list is already quite long. Don’t rush anything. Take your time to review and consider everything. If necessary, ask again.
Regarding the installation layer: if I’m going for eco-friendly, then all the way in the installation layer as well, whether with hemp or wood fiber, and the tough ones go for flax.
And having an installation layer doesn’t reduce living space—that’s what separates the good from the truly good. This time, we’ve brought time with us. Nothing will happen this year except gathering information and eliminating manufacturers from the list. Thanks also for the advice on wall construction. It’s incredible how many try to sell you EPS (or whatever fancy name they now use for it).
What I really liked about Kampa is that right from the standard specification it includes an installation layer and no EPS. But there are other “challenges” with Kampa. So I’m looking for possible alternatives.
H
HausBammental3 Apr 2016 12:59Passivhaus schrieb:
In our timber house (not a prefab) the layers from inside to outside are: laminated veneer lumber panel as interior cladding (instead of drywall), battens, service cavity filled with soft wood fiber insulation boards, OSB board serving as a vapor retarder, timber frame with cellulose insulation (Isofloc), rigid wood fiber insulation boards, battens/ventilation cavity, wood facade.We haven’t looked into this option (timber house and not prefab) at all yet. Could I find out who built the house?
Thanks.
U
Username_wahl3 Apr 2016 13:41HausBammental schrieb:
We haven’t looked into this option yet (timber house, not a prefab). Could I find out who built the house? A local carpentry company built it. They work in small quantities. There are probably some in Baden-Württemberg as well, maybe try searching online.
We also worked with a local carpentry company, which I can highly recommend.
Our wall construction from inside to outside:
12.5 mm (0.5 inch) gypsum board
12.5 mm (0.5 inch) OSB
60 mm (2.4 inches) installation cavity insulated with wood fiber board
12.5 mm (0.5 inch) OSB
200 mm (7.9 inches) timber frame with wood fiber blow-in insulation
45 mm (1.8 inches) Pavatex board
Air gap
Facing brick (or cladding)
For a plastered exterior, the outer layers would naturally be different.
Our wall construction from inside to outside:
12.5 mm (0.5 inch) gypsum board
12.5 mm (0.5 inch) OSB
60 mm (2.4 inches) installation cavity insulated with wood fiber board
12.5 mm (0.5 inch) OSB
200 mm (7.9 inches) timber frame with wood fiber blow-in insulation
45 mm (1.8 inches) Pavatex board
Air gap
Facing brick (or cladding)
For a plastered exterior, the outer layers would naturally be different.
Our wall construction:
Exterior Wall (from outside to inside)
Intentionally designed without installation cavities, only empty ducts!
Exterior Wall (from outside to inside)
- Silicone resin plaster
- 60 mm (2.4 inches) wood fiber insulation board
- 200 mm (7.9 inches) wooden frame with insulation material (hemp)
- 12 mm (0.47 inches) OSB board
- Vapor retarder membrane
- 12.5 mm (0.49 inches) gypsum drywall board
- 12.5 mm (0.49 inches) gypsum drywall board
- 12 mm (0.47 inches) OSB board
- 100 mm (3.9 inches) wooden frame with insulation material (hemp)
- 12 mm (0.47 inches) OSB board
- 12.5 mm (0.49 inches) gypsum drywall board
Intentionally designed without installation cavities, only empty ducts!
H
HausBammental3 Apr 2016 18:36Great. Now I have a few examples. Thank you very much. (I still need to look up a few abbreviations )
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