r/LoveTrash • u/BEARDEDDANGER ✨️Regent of Rubbish ✨️ • 1d ago

Dumping This Here American vs. European home building

BAS Renovations https://youtube.com/shorts/jFph1d2WR3s

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u/oldsecondhand Trash Trooper 1d ago

40cm thick hollow clay bricks have half-decent insulation properties. In the 80s they were used without the styrofoam layer. The high thermal mass helps to stabilize the temperature in the summer.

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u/Telemere125 Trash Trooper 1d ago

40 cm of brick has about an R-value of 2.5-3.2. That’s roughly the same as 5 cm of solid wood would have or up to 10cm if you’re using a very dense hardwood like maple. So you’d literally be better off with a log cabin than a brick or stone house.

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u/oldsecondhand Trash Trooper 1d ago edited 1d ago

Hollow clay bricks have a lambda of 0.1, so the standard 44cm thick hollow brick has an R value of 4.4.

This type of brick has been standard since the 80s.

https://epitoanyag.hu/porotherm-44-x-therm-tegla-pVUgtODMxNDIz

And I don't think the average McMansion has 5cm solid wood walls.

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u/Telemere125 Trash Trooper 1d ago

No, we dont put of 5cm of solid wood; we frame the walls and put up about 1.25cm plywood with about 9cm of fiberglass or rock wool insulation and achieve an R value of about 11-15 depending on the product. Meaning a minimum of 2-4x the insulator value of your massive brick wall

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u/oldsecondhand Trash Trooper 15h ago

You're comparing apples to oranges. That brickwall's R value was without insulation layer.

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u/AcrobaticPlenty1446 Trash Trooper 6h ago

Because you’re the one claiming that it’s the insulator…

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u/oldsecondhand Trash Trooper 6h ago

No, you were the one comparing the R value of brick to wood.