ᐅ Building with Poroton blocks and applying a brick veneer?

Hello,

my wife and I are planning to start building this year. We have already had initial discussions with a building planner who incorporated our wishes into the design. Now the plan is to build with Poroton blocks and apply facing brick slips on top.

My question is this: The planner said we will construct a 36.5cm (14.4 inches) wall using insulated Poroton blocks and attach the brick slips directly to the Poroton blocks. Is this sufficient, or should there be additional insulation added, or perhaps a thicker wall?

Or does anyone have a better suggestion?

Thank you

More is always possible, but the planner can/is only allowed to build what is legally permitted. Therefore, additional insulation is not necessary. In this case, with higher requirements, one would probably choose a thicker brick or higher-quality insulation, if still feasible. So, if you planned a T8, you could improve the insulation by changing to a T7.

Good luck

K1300S

Hello,
we also want to clad the facade with bricks and are planning a double-shell wall construction...
Inner shell: 17.5cm (7 inches) sand-lime brick – 15cm (6 inches) mineral core insulation with a thermal conductivity of 0.032 W/(m·K) – outer shell: 11.5cm (4.5 inches) brick cladding.
Instead of sand-lime brick, you can also use Poroton, HLB, or aerated concrete...
Maybe that could be an alternative for you as well...

Regards, fragri

Hello,

Matze8612 schrieb:

The building planner said we are going with a 36.5cm (14.4 inches) wall (insulated Poroton blocks) and will glue the facing bricks directly onto the Poroton block. Is that enough or should we add insulation in between or opt for a thicker wall?

You can only answer that yourself, as it depends on the energy standard you want to achieve. Is KfW 70 sufficient for you, or do you want better? Keep in mind that “better” does not automatically mean “reasonable.”

I assume you chose facing bricks because they are probably more cost-effective. Any changes like using a different or thicker block, or simply adding more insulation, will increase costs.

Generally, a 36.5cm (14.4 inches) block, especially if insulated, is sufficient to reach a decent standard when combined with an appropriate heating system. The question is how economically sensible further measures are.

Best regards, Bauexperte

Hello,

Matze8612 schrieb:
.....my wife and I want to start building this year. We have already had the first discussions with a building planner who implemented our wishes.

How well-founded and technically detailed are your requirements? What knowledge do you have regarding building physics and energy efficiency? What kind of training? Information read online, gut feeling?

Matze8612 schrieb:
.... The building planner said we will use a 36.5cm (14.4 inches) wall (insulated Poroton blocks) and attach the facing bricks directly to the Poroton block. Is that enough, or should there be additional insulation or a thicker wall? ...

It is clear that this planner is not focused on energy and cost optimization!
I would look for another consultant, especially since the building services are likely to be neglected as often happens!

Best regards.