ᐅ 17.5 cm Poroton brick plus 16 cm external thermal insulation composite system (ETICS) or 36.5 cm aerated concrete block
Created on: 7 Aug 2013 22:06
V
Vit84
Hello experts,
I received an offer from a company for the following masonry: 17.5cm (7 inches) Poroton block plus 16cm (6 inches) external thermal insulation composite system (ETICS). However, I am more inclined towards a monolithic construction and communicated this to the company. Now I received an offer for a monolithic construction made of aerated concrete (Ytong) with a thickness of 36.5cm (14 inches). The additional cost for this is 8000 €.
What do you think?
I received an offer from a company for the following masonry: 17.5cm (7 inches) Poroton block plus 16cm (6 inches) external thermal insulation composite system (ETICS). However, I am more inclined towards a monolithic construction and communicated this to the company. Now I received an offer for a monolithic construction made of aerated concrete (Ytong) with a thickness of 36.5cm (14 inches). The additional cost for this is 8000 €.
What do you think?
Hello,
Best regards
Vit84 schrieb:Every general contractor or main contractor has their own concept regarding the building structure and building systems, which they are eager to sell. This applies to both the building envelope and the building systems. Whether it meets the specific and individual requirements hardly plays a role. The whole process is "controlled" by surcharges.
...The additional cost for this is 8000 €. What do you think about that?
Best regards
B
Bauexperte8 Aug 2013 13:09Hello,
Basically, switching from hollow clay brick plus external insulation to a purely monolithic construction with aerated concrete should hardly cause extra costs. This is because, in monolithic construction, the second work step (external insulation) is eliminated, labor costs for the shell construction are lower, scaffolding time is shorter, aerated concrete is less critical to install, and the thicker block doesn’t cost that much more. It does have a higher density, yes. And yes, it is somewhat more expensive, but overall the figure mentioned should not result in such a high additional cost.
Regards, Bauexperte
Vit84 schrieb:I tend to agree with €uro, as I have often had this discussion myself.
A company offered me the following masonry: 17.5 cm (7 inches) Poroton block + 16 cm (6 inches) external insulation (WDVS). However, I tend to prefer a monolithic construction method and I specified this to the company as well. Now I received an offer for a monolithic construction using aerated concrete (Ytong) with a thickness of 36.5 cm (14.5 inches). The additional cost is 8,000 €. What do you think about this?
Basically, switching from hollow clay brick plus external insulation to a purely monolithic construction with aerated concrete should hardly cause extra costs. This is because, in monolithic construction, the second work step (external insulation) is eliminated, labor costs for the shell construction are lower, scaffolding time is shorter, aerated concrete is less critical to install, and the thicker block doesn’t cost that much more. It does have a higher density, yes. And yes, it is somewhat more expensive, but overall the figure mentioned should not result in such a high additional cost.
Regards, Bauexperte
I would say it’s too expensive. Or is this going to be a mansion? Normally, there shouldn’t be much of a price difference between the two types of walls.
It’s possible that the developer doesn’t want to build that way, which would explain the extra charge. In that case, I would probably look for another one.
It’s possible that the developer doesn’t want to build that way, which would explain the extra charge. In that case, I would probably look for another one.
No, of course it’s not going to be a castle, just a 140 m² (1,507 sq ft) single-family house with 1.5 floors.
The company usually builds with 17.5 cm (7 inches) Poroton blocks plus 16 cm (6 inches) external thermal insulation composite system (ETICS). They are strong advocates of ETICS.
I just don’t understand, as Bauexperte has already correctly pointed out, why the additional costs are so high.
Is the company trying to push their ETICS on me, or can the higher price really be justified by changes in structural engineering and so on?
The company usually builds with 17.5 cm (7 inches) Poroton blocks plus 16 cm (6 inches) external thermal insulation composite system (ETICS). They are strong advocates of ETICS.
I just don’t understand, as Bauexperte has already correctly pointed out, why the additional costs are so high.
Is the company trying to push their ETICS on me, or can the higher price really be justified by changes in structural engineering and so on?
Do they have any special wall construction that would, for example, achieve a higher KFW rating?
Poroton only becomes important for taller buildings because it can withstand higher pressure. That doesn’t apply to your case. So, no reason for me to pay extra.
We also experienced that construction companies tend to build only the way they are used to. Personally, I wouldn’t force anyone into it. In the end, they simply can’t do it differently, and you end up bearing the consequences. Perhaps the company has a “brick purchase agreement,” if such a thing exists? The other bricks would then be more expensive—and this offer is just $8,000 cheaper than usual.
Poroton only becomes important for taller buildings because it can withstand higher pressure. That doesn’t apply to your case. So, no reason for me to pay extra.
We also experienced that construction companies tend to build only the way they are used to. Personally, I wouldn’t force anyone into it. In the end, they simply can’t do it differently, and you end up bearing the consequences. Perhaps the company has a “brick purchase agreement,” if such a thing exists? The other bricks would then be more expensive—and this offer is just $8,000 cheaper than usual.
Similar topics