So, we are facing a decision between two building contracts. We will receive the final offers with all changes in the coming days.
Building contract #1 uses 17.5cm (7 inches) Poroton T18 blocks, while building contract #2 uses 24cm (9.5 inches) Poroton T18 blocks. External thermal insulation composite system (ETICS) is specified as 20cm (8 inches) for both. Now I’m wondering if 17.5cm (7 inches) could present any disadvantages for us, and if so, which ones? Based on gut feeling and the included services, we actually prefer building contract #1.
Thank you very much in advance for your help.
Best regards
Building contract #1 uses 17.5cm (7 inches) Poroton T18 blocks, while building contract #2 uses 24cm (9.5 inches) Poroton T18 blocks. External thermal insulation composite system (ETICS) is specified as 20cm (8 inches) for both. Now I’m wondering if 17.5cm (7 inches) could present any disadvantages for us, and if so, which ones? Based on gut feeling and the included services, we actually prefer building contract #1.
Thank you very much in advance for your help.
Best regards
toxicmolotow schrieb:
He wants to build here with a 17.5cm (7 inch) Poroton wall. So half the mass of a 36cm (14 inch) one.@toxicmolotow
Mate, then you need to be more precise! Also, in my first post I referred to 17.5cm (7 inch) and 24cm (9.5 inch) Poroton.
WildThing schrieb:
- The issue with the fasteners is correct, you definitely need special anchors. (It’s even more challenging with a prefabricated timber frame house)I don’t understand. Just use Spax screws and you’re done. And that without drilling!P
Peanuts748 Aug 2016 13:55robi782 schrieb:
Why not respond to my criticism then @toxicmolotow? I tried to have a constructive conversation with you and weigh the pros and cons. I’m not set on anything yet. But if you bring up arguments and advantages that aren’t relevant based on the wall construction values I previously mentioned according to "u-wert.XXX," then I wonder how we’re supposed to communicate reasonably here.
So let’s leave it at that, all the best to you.
RegardsA few advantages of sand-lime brick have already been mentioned (higher compressive strength, thinner non-load-bearing interior walls = more living space, sound insulation—also important near washing machines and dryers, etc.—better fastening options...). What advantages would Poroton offer? Other than the fact that the construction company can cut it more easily.
By the way, I don’t know if it’s actually due to the type of brick. A friend once said something like that, but a colleague built with 36.5cm (14.4 inch) Poroton, and within two years the house settled enough to cause some cracks in the interior plaster in a few spots.
With our sand-lime brick, after three years we have had no such problems.
T
toxicmolotof8 Aug 2016 16:08Cracks can also occur in calcium silicate bricks, especially at transitions to other materials such as roller shutter boxes or non-load-bearing walls.
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