ᐅ Better to choose a 24 cm Poroton wall instead of a 17.5 cm one?

Hello!

Our home construction company builds the walls using an external thermal insulation composite system (ETICS) with 17.5 cm (7 inches) Poroton masonry and 16 cm (6 inches) polystyrene insulation. Instead of the 17.5 cm (7 inches) Poroton bricks, you can opt for 24 cm (9.5 inches) Poroton bricks for an additional cost of 3,500 euros, which are typically only necessary for much larger houses.

Considering the property value, durability, possible ecological reasons, and sound insulation, would it be better to choose the 24 cm (9.5 inches) thick bricks, or are the 17.5 cm (7 inches) bricks sufficient? The downside of the thicker walls is that you lose about 4 square meters (43 square feet) of living space, and they are somewhat more expensive.

Thanks and best regards,
Marc

Hello!

Why use bricks at all? Insulation is handled by ETICS (external thermal insulation composite systems). For everything else, calcium silicate blocks are the better choice.

If bricks are necessary: for soundproofing reasons, choose the thicker cross-section and build 20cm (8 inches) wider/longer.

Best regards,
TomTom1

Hello,
I agree with TomTom. Sand-lime brick is usually the better choice in most cases...

Regards