Hello everyone,
I want to replace the windows of my house with triple-glazed units. I have received quotes for the following windows:
a) Rehau Synego 80mm (3.1 inches) AD
b) Salamander Bluevolution 82mm (3.2 inches) MD
c) ALUPLAST Ideal 8000 85mm (3.3 inches) MD
One window supplier advertised the V-Perfect technology (Aluplast windows). Is this state-of-the-art, and the others just didn’t mention it, or is it really something special?
From my point of view, all the windows sound quite similar, but maybe someone knows particular advantages or disadvantages of these models. All the profiles contain over 55% recycled material, so our municipality offers subsidies for them.
From what I have read here and elsewhere, the installation seems to be even more important than the window itself. Every supplier has described a different installation method, which leaves me uncertain about the correct approach. Our windows all have roller shutters, and the exterior walls are insulated with 6 cm (2.4 inches) of thermal insulation and plastered on the outside.
One supplier offered to seal the windows on the outside, but that seems wrong to me. Most proposed using compressible seal tape (compression tape) on the outside, sealing and covering on the inside, and foam insulation. If I have understood this correctly, that would be the correct installation method, right? The compressible tape should then be applied on the sides and top, correct? How should the interior sealing be properly done? Are exterior trim strips recommended? These were offered as an option in some cases.
One window installer advertised production according to RAL quality standards, but there was no mention of RAL regarding installation.
I will definitely ask all of them again whether the installation will be done by their own personnel or subcontractors.
Thank you very much in advance for your support!
Thomas
I want to replace the windows of my house with triple-glazed units. I have received quotes for the following windows:
a) Rehau Synego 80mm (3.1 inches) AD
b) Salamander Bluevolution 82mm (3.2 inches) MD
c) ALUPLAST Ideal 8000 85mm (3.3 inches) MD
One window supplier advertised the V-Perfect technology (Aluplast windows). Is this state-of-the-art, and the others just didn’t mention it, or is it really something special?
From my point of view, all the windows sound quite similar, but maybe someone knows particular advantages or disadvantages of these models. All the profiles contain over 55% recycled material, so our municipality offers subsidies for them.
From what I have read here and elsewhere, the installation seems to be even more important than the window itself. Every supplier has described a different installation method, which leaves me uncertain about the correct approach. Our windows all have roller shutters, and the exterior walls are insulated with 6 cm (2.4 inches) of thermal insulation and plastered on the outside.
One supplier offered to seal the windows on the outside, but that seems wrong to me. Most proposed using compressible seal tape (compression tape) on the outside, sealing and covering on the inside, and foam insulation. If I have understood this correctly, that would be the correct installation method, right? The compressible tape should then be applied on the sides and top, correct? How should the interior sealing be properly done? Are exterior trim strips recommended? These were offered as an option in some cases.
One window installer advertised production according to RAL quality standards, but there was no mention of RAL regarding installation.
I will definitely ask all of them again whether the installation will be done by their own personnel or subcontractors.
Thank you very much in advance for your support!
Thomas
Tverhofen schrieb:
I have received quotes for the following windows:
a) Rehau Synego 80mm (3 inches) AD
b) Salamander Bluevolution 82mm (3.2 inches) MD
c) Aluplast Ideal 8000 85mm (3.3 inches) MD
[...] In my opinion, all the windows sound quite similar, but maybe someone knows specific advantages or disadvantages of these models. All the windows have profiles with a recycled content of over 55%. The similarity is not just your impression. The profile depth (as well as the number of chambers) is not a quality indicator. I don’t know how Salamander and Aluplast compare in terms of quality. In principle, I would always prefer MD over AD. The recycled content pleases subsidy providers and does not harm the product.
Tverhofen schrieb:
A window manufacturer advertised V-Perfect technology (Aluplast windows). Is this state of the art and the others just did not mention it, or is it really something special? There are countless "space-age" technologies that all share the trait of sounding extremely impressive in marketing language but offering no real added value in everyday use. Exceptions may prove the rule, but a uPVC window remains a uPVC window, and as far as white is concerned, it’s six of one, half a dozen of the other. For colored windows, I would recommend Gealan, and for stress elements (front doors, lift-and-slide doors, and similar), aluminum is better.
Tverhofen schrieb:
From what I’ve read here and elsewhere, the installation seems to be even more important than the window itself. In practice, installation must be carried out by experienced professionals—that is the only real benefit for the customer. Whether the paperwork says ISO 0815 on one offer and DIN EN 4711 on another, the paperwork remains theory—you have to keep a sharp, eagle-eyed watch on the workers at the construction site.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
T
Tverhofen25 Oct 2020 20:49I have already decided to be present during the installation. The only question is how to recognize a bad apple or a slacker.
@Joedreck
The best ventilation concept is useless if the U-values are not adequate.
That is exactly why this alone is not sufficient for funding, as the thermal bridge proof will fail.
The temperature may even be lowered due to the airflow.
@Tverhofen
Installation according to RAL recommendations is often mentioned in offers but frequently ignored in practice.
I believe I have never approved an installation for KfW funding over the years.
Basically, installation systems must be approved according to the state building regulations.
This is usually not the case when products are mixed randomly because they are cheap.
Individual proofs usually fail due to the calculated linear meter values affecting the Sd-value.
There is hardly any system left that uses silicone on the outside. (Würth once had an approval, so I am a bit cautious.)
Otherwise, the Würth or Illbruck Trio compressible foam tapes on a SMOOTH RENDERED SURFACE are sufficient.
Profiles are decorative and don’t need to be sealed with acrylic. Especially since the incorrect three-sided sealing is often applied anyway.
The rain protection and vapor barrier are located beneath the profiles. The profiles themselves are not approved, which is also often true for frame extensions.
That is why such parts are usually not pre-assembled; manufacturers often shift blame onto the installers.
Request the Uw-values and the test report for the standard window (DIN EN 14351-6 :2006+A1:2010),
as often only the Ug-value is provided, which according to the Energy Saving Ordinance does not matter to anyone anyway.
I also generally require a declaration of performance from the manufacturer or supplier with signature.
Reliable companies have no problem with this. It is important that the line items in the order are clearly assigned to the Uw-values.
The number of chambers can be significant; usually, five chambers are so poor that reinforcement in the sashes is omitted,
and instead, the glass is bonded into the sash frame. Great if a bird didn’t know that. Bad luck if an old profile was brought to the market like that,
resulting in a completely new window being necessary because the profiles are no longer available.
The best ventilation concept is useless if the U-values are not adequate.
That is exactly why this alone is not sufficient for funding, as the thermal bridge proof will fail.
The temperature may even be lowered due to the airflow.
@Tverhofen
Installation according to RAL recommendations is often mentioned in offers but frequently ignored in practice.
I believe I have never approved an installation for KfW funding over the years.
Basically, installation systems must be approved according to the state building regulations.
This is usually not the case when products are mixed randomly because they are cheap.
Individual proofs usually fail due to the calculated linear meter values affecting the Sd-value.
There is hardly any system left that uses silicone on the outside. (Würth once had an approval, so I am a bit cautious.)
Otherwise, the Würth or Illbruck Trio compressible foam tapes on a SMOOTH RENDERED SURFACE are sufficient.
Profiles are decorative and don’t need to be sealed with acrylic. Especially since the incorrect three-sided sealing is often applied anyway.
The rain protection and vapor barrier are located beneath the profiles. The profiles themselves are not approved, which is also often true for frame extensions.
That is why such parts are usually not pre-assembled; manufacturers often shift blame onto the installers.
Request the Uw-values and the test report for the standard window (DIN EN 14351-6 :2006+A1:2010),
as often only the Ug-value is provided, which according to the Energy Saving Ordinance does not matter to anyone anyway.
I also generally require a declaration of performance from the manufacturer or supplier with signature.
Reliable companies have no problem with this. It is important that the line items in the order are clearly assigned to the Uw-values.
The number of chambers can be significant; usually, five chambers are so poor that reinforcement in the sashes is omitted,
and instead, the glass is bonded into the sash frame. Great if a bird didn’t know that. Bad luck if an old profile was brought to the market like that,
resulting in a completely new window being necessary because the profiles are no longer available.
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