Zero-energy Attefall. How would you have done it?

[fribygg]

it works but it's not reasonable, there's not much left.

I share that opinion.

How many energy-efficient log houses have you built?

 

[Plupp 405730]

I share that opinion.

How many energy-efficient log houses have you built?

The question is how many passive or zero-energy houses are built of logs, I guess very few…

 

[oliven1]

I share that opinion.

How many energy-efficient log houses have you built?

none, but it's not the log itself that is energy-efficient in any way.

rather, the log will only serve as a cladding element on the low-energy frame.
so I could have mounted log on any house of those I have built.

 

[oliven1]

The question is how many passive or zero-energy houses are built from logs, I guess very few…

I would say you are absolutely right there.

 

[fribygg]

none, but it's not the timber itself that is energy-efficient in any way.

instead, the timber will only function as a cladding element on the low-energy frame.
so it could be mounted on the outside of any house I've built.

You clearly haven't read the thread yet, no one is claiming that the half-timbering that the original poster intends to use is energy-efficient.

 

[oliven1]

You apparently haven't read the thread yet, no one claims that the half-timber that TS intends to use is energy-efficient.

have you built a single zero-energy/passive house?

 

[fribygg]

have you built a single zero-energy/passive house?

I have privately built a couple of energy-efficient log houses, and traditional Attefallshus with a frame structure. I perceive that it's a single small house in Attefall size that the OP is considering, and I refrain from mentioning what I've been involved with professionally as it has no relevance to the question in the thread.

Have you @oliven1 built any single energy-efficient house in Attefall size? Or do you maybe have experience with zero-energy houses?

 

[oliven1]

I have privately built a couple of energy-efficient log houses, and a traditional Attefall house with a stud frame. I perceive that it's a single small house in Attefall size that TS is considering, and I refrain from mentioning what I have been involved with professionally as it has no relevance to the issue in the thread.

Have you @oliven1 built any single energy-efficient house in Attefall size? Or do you perhaps have experience with Zero-energy houses?

have built incredibly many sqm of low-energy houses like passive houses and zero-energy houses.
the solutions for a large house of 10,000 sqm and one of 100 sqm are exactly the same.

if you can build one, you can build the other.

 

[Rabbithole]

Is there greater heat leakage from a well-insulated slab on the ground with underfloor heating than from a joist on a pier that TS is considering?

I would argue that the joist on a pier should have greater heat leakage. The reason being that air circulates under the joist, which is colder than the ground's base temperature.

 

[oliven1]

I would claim that the floor structure on stilts should have greater heat leakage. The reason is that air circulates under the floor structure, which is colder than the ground's base temperature.

The floor structure on stilts can never be resolved into a low-energy house.
It must be a slab on the ground so that you can account for the inertia from the ground.

A cold winter day with -16 degrees outdoors would mean that you have -16 degrees under the house.

 

[Jonatan79]

joists on piles can never solve a low-energy house with.
must be slab on grade so you can count on the inertia from the ground.

a cold winter day with -16 degrees outside would mean that you have -16 degrees under the house

Doesn't that depend on geographical location?

 

[Rabbithole]

have built an incredible number of square meters of low-energy houses like passive houses and zero-energy houses.
the solutions for a large house of 10,000 sqm and one of 100 sqm are exactly the same.

if you can build one, you can build the other.

Remember that just because you've built lots of low-energy houses, it doesn't automatically mean you're right. It's still possible to build in many different variants; you just need to understand the basic physics and the goal.

A few years ago ~10 it was somewhat difficult to find good suppliers for low-energy house components. Today, it is quite easy to find passive house windows and doors. Even though finding stylish doors in the right style can be difficult. There, you can advantageously build a cold vestibule as an airlock.

 

[fribygg]

I have built up to 40,000 square meters divided into different sizes from a couple of 100 square meters up to over 12,000 square meters large buildings

Do you perhaps mean that you have been professionally involved in 40,000m2? Are your professional experiences of large constructions relevant to the thread, which is about a proposed summer cottage, Attefall-sized, Zero-energy house with half-timber facade? Can you apply your knowledge to the size of the building TS is considering, or do you persist in thinking that it's not possible to build with timber?

 

[Rabbithole]

a beam structure on stilts can never work for a low-energy house.
It must be a slab-on-ground so you can account for the inertia from the ground.

A cold winter day with -16 degrees outside would mean you have -16 degrees under the house.

Absolutely, but it can still be solved. The conditions for the floor become similar to those for the wall.
The soil's inertia does not play a critical role even though it is nicer with a few plus degrees than minus.

If you want to build on a rock slab without making a pile of gravel around the house, I still suggest building down a wall or similar first, and then inside this, level and insulate. Clearly unnecessary with cold draft under the beam structure.

 

[fribygg]

You can never solve a low-energy house with a beam structure on pilings.

Saving this statement for the future.
The original poster or someone else's construction will eventually be classified and approved as a low-energy house and thus prove that it is possible to build.