Isarholz Wood-Aluminium Window Experiences

2025-03-21 08:40:40

This year I purchased windows from Isarholz for self-installation through the local specialist trade. So far, I cannot find anything negative in terms of quality. The windows are well manufactured, the seals and warm edge look neat and well made. We have INO HA 80 made of pine, painted white on the inside, brown on the outside. The fittings are from Roto, I think there is little to criticize there. Isarholz produces in Slovenia, I think this already creates a price advantage compared to manufacturers from Germany and Austria. I would recommend Isarholz.

2025-03-21 08:48:40

Short addition, the aluminium shell from Isarholz is always manufactured to be highly weather-resistant as standard. However, I only found this out after repeatedly asking.

Other manufacturers mention this multiple times as a quality aspect in their catalogs, which is why I initially feared that the aluminium shell might be of inferior quality.

In practice, the identical aluminium shell is also sourced by many German and Austrian window manufacturers from the same supplier in the same quality.

I cannot say anything about the quality of the processed wood; of course, it would be interesting to know how much inferior sapwood is used there. However, this cannot be found out from any manufacturer.

2025-03-21 09:26:17

Thank you very much, yes that already helps a lot. Maybe I am going into this a bit too naively but in my opinion such a window basically consists largely of:
1. Glass -> If it has the certifications and meets the standards, I see little problem there
2. Wood --> Is probably the biggest factor yes but I will definitely sample 1-2 completed projects
3. Aluminium --> I see it similarly but it's good that you also got the confirmation that they are highly weather-resistant
4. Assembly --> Here are probably the biggest differences although I don't want to imply that a factory in Slovenia with 600 employees automatically produces lower quality than a local window manufacturer with 15

Thank you

2025-03-21 15:30:11

This year I sourced windows from Isarholz for self-installation through the local specialist trade. So far, I cannot find anything negative about the quality. [...] Isarholz produces in Slovenia, I think this already represents a price advantage compared to manufacturers from Germany and Austria. [ / ] the aluminum shell from Isarholz is always standardly made to be highly weather resistant. However, I only found this out after asking several times. Other manufacturers mention this repeatedly as a quality aspect in their catalogs, which is why I initially feared the aluminum shell might be of inferior quality. In practice, the identical aluminum shell is also sourced by many German and Austrian window manufacturers from the same producer with identical quality. I cannot say anything about the quality of the processed wood; it would, of course, be interesting to know how much inferior sapwood is used. However, this cannot be found out from any manufacturer.

Self-installation in existing buildings is bold. We had no manufacturers who would deliver to end customers. The quality of the "German" system providers is all ensured through certification (ISO 9000 & Co.); the workbenches of most suppliers are located in Poland, Slovakia, and Belgium. Slovenian wages are probably attractive. Moderately weather-resistant aluminum does not exist. Wood-aluminum windows from cheap suppliers regularly do not consist of inferior wood in the sense of "second choice," but rather soft wood types that would not be suitable without an aluminum weather shell. This has much less to do with the purchase prices of the wood than with the fact that harder woods significantly wear down milling tools faster.

2025-03-21 17:37:41

Wood-aluminum windows from cheap providers regularly do not consist of inferior wood in the sense of "second choice," but rather soft wood species that would not be suitable without an aluminum weather shell.

The manufacturers of wood and wood-aluminum windows usually offer the same wood species for both wood and wood-aluminum.

If the manufacturer's pine or spruce is suitable for making pure wood windows, it should be more than sufficient for wood-aluminum windows.

Furthermore, we did not buy directly from the manufacturer but through a specialist retailer/window construction company. I think the installation is significantly cleaner and closer to RAL than by many specialist companies, simply because time is not an issue for me.

2025-03-21 18:05:28

Moreover, we did not buy from the manufacturer but through a specialist dealer/window construction company. I think the installation is much neater and closer to RAL than many specialist companies, simply because time is not a factor for me.

Yes, your installation looks very neat.

Manufacturers of wooden and wood-aluminum windows usually offer the same types of wood for both wooden and wood-aluminum windows.

The other way around. Those who make good wooden windows often also offer the aluminum option. Manufacturers of cheap wood-aluminum windows hope that as few customers as possible will forgo the then recommended weather protection.

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Isarholz Wood-Aluminium Window Experiences

miji252

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Felix1117

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miji252

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