T
Tverhofen25 Oct 2020 11:31Hello 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:
The exterior of the house has 6cm (2.4 inches) of thermal insulation.Could it be that your window U-value is better than that of the wall?
And could that actually be harmful to your house?
Isn't the usual practice to insulate the walls first and then install new windows?
Shouldn't there be an overall concept behind this, otherwise there is a risk of mold?
T
Tverhofen25 Oct 2020 14:47The window replacement is being coordinated with my energy consultant, and an appropriate ventilation plan has also been developed, so I hope everything fits together well...
ypg schrieb:
Could it be that your window’s U-value is better than the wall’s?
And could that actually be unhealthy for your house?
Isn’t it usual to insulate the walls first and then install new windows?
Shouldn’t there be a comprehensive plan behind this, otherwise mold might occur? I had the same thought just now. But even 60mm EPS with a thermal conductivity of 0.040 W/(m·K) results in a U-value of 0.6 W/(m²·K).
That corresponds to very good triple glazing, although the frame cannot achieve that level. This means the coldest component remains the frame and possibly the glass. If condensation occurs, it will happen there and not on the wall.
ypg schrieb:
Could it be that your window U-value is better than the wall’s?
And could that actually be unhealthy for your house?
Isn't it standard to insulate the walls first and then install new windows?
Shouldn’t there be a proper concept behind this, otherwise mold might develop? Please stop blaming new windows in old buildings for mold issues. That’s not true. Mold is caused by improper ventilation and heating habits. Nothing else.
Joedreck schrieb:
Please stop blaming new windows in old buildings for mold problems. That is not true. Incorrect ventilation and heating habits are what cause mold. Nothing else. What’s your attitude? My post has 4 question marks! As you can see, I don’t really know much about this, but you still have to consider the idea when the original poster simply mentions replacing windows.
- After all, the ventilation behavior of old windows is different from that of new windows -
And the original poster has already clarified everything, so all good!
Similar topics