How to build your zero energy, passive, eco house. The basics. Start here
They taught us wrong. Of course heat tries to “escape” the house trough the ceiling and windows. It makes sense, hot air is lighter and the windows are thinner than the walls. But it’s not like that at all.
Learn about the 30/30/30 rule. A study made by the heating, ventilating, and air conditioning systems found the following. Why does the heat escape?
Probably it’s not exactly 30–30–30 but you’ll get the point.
30% infiltration: danish dog & candles.
30% “by the book” materials.
30% earth & hot spoon.
First 30% | infiltration.
Infiltration of air means money thrown out the window, air leakage through small cracks and small holes. It’s like opening the door in a house while you’re paying heating bills. It’s a waste of your money.
If you have a dog that’s heavier than a chubby cat … or you know somebody who owns a dog that’s heavier than a cat, you will be able to relate to this story. Just think about that animal sleeping, or insisting on going in and out of the house a few times. It might be the best door ever. It might be made out of titanium …it will still bend in time.
Cracks & candles. The hot air will leave your house once for all. Beside that you have cracks and holes everywhere. Just walk with a candle near your windows and doors and you’ll see where your money is being wasted. Time bends and breaks everything, especially doors and windows.
Bricks. A few years before the invention of concrete, we had several layers of brick so that cracks would stop; but now if a brick cracks, you have infiltration from the inside to the outside, and you can’t see it under the paint!
Banks. In banks usually there is a pressure difference between the interior and exterior. Have you noticed that the door is so much harder to open? They compensate the infiltration by pressurizing the air inside, so that the air always goes from the inside to the outside.
Bad workmanship. And not to forget BAD WORKMANSHIP!!!
Second 30% | materials
Perfection to the core. These are the materials themselves, the U, R values that are being sold to us in catalogs: the brick walls, polystyrene and the 10cm mineral wool.
Basically the ideal version that the manufacturer writes on their website are in perfect conditions. Double triple glazing and argon in the windows.
Insulation values. However, they don’t mention that the door that cost 4000$ is destroyed by a 100$ little puppy who eats 20$ dog food and sleeps on the door while you are at work. Rain, children out of control, accidents, sudden wind will do the same thing … It’s just the matter of time.
Third 30% | earth
Concrete is “junk food” in the wrong place. How to solve in the perfect way.
Metal spoon and tea. Just think about a: cup of hot tea with a spoon in it. The earth has 10C and you want 22C inside. Everybody puts the best insulation, concrete. Don’t get me wrong I like concrete. I will “sleep with it in my own bed”. However it’s not the best insulator. Actually it’s the worst that you can find.
Concrete between your floor and earth itself is like the metal spoon in your tea. “10C” is not that cold, but it’s constant 24/7 and it’s there. It’s like having several doors opened at the same time. In hot climate on the other hand, it’s excellent. (battery)
Money is gone on? Funny thing though, you spend all that money on windows, doors, insulation (God knows what complicated hi-tech inventions) but we don’t let the children on the floor without their socks on because they’ll get cold. Where is the logic?
Quick solution. Concrete is extremely good to store heat. Read how it’s done in the right way. Some might put super expensive 2–5 cm insulation on the floor but that equals to nothing.
Insulation starts from 40cm; anything below that it’s just decoration. You may judge me about the thickness here, but if the house that your talking about will not produce more energy than it consumes, then I can’t nod my head nor go along with it. Sorry.
Sidewalks and balconies do the same. They collect large amounts of heat or cold and transfer it to your inner walls. Click for solution.
Insulation. Why more insulation won’t help normal houses? Because normal houses loose massive amounts of energy and heat elsewhere. Beside that, it would cost a fortune to insulate a normal house. It would be a technical and financial challenge. Read about the insulations that we like , Chimney effect and the most important article about the air exchange.
Why concrete? Why does “everybody” use concrete on earth? It’s simple. They can’t. The walls themselves weight tons and you can’t put something under the walls and between the foundation.
Just too heavy. The weight on it is just too heavy and so they skip the insulation. That’s why the walls suck up all of the cold from the foundations. Concrete conducts the heat extremely well.
Metal spoon. Concrete …or even brick walls act as an extension of your foundation. The “10C” temperature will reach not just your floor but it will “travel” higher. As I’ve mentioned before, it’s like a metal spoon in a cup of tea.
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Have you seen this “dinosaur”? He knows more than all of the architects and constructors about heat solutions. Concrete is like the “fake happiness” of eating ice cream. How to use it in the right way.
Quick fix? They are none. Maybe reading the website and building a new house from scratch. That’s the easiest and cheapest method.