Hello dear community,
A clueless person going astray.
I am currently considering whether it is really worth upgrading the quality of the window materials. I know this is somewhat speculative. We have quite a few floor-to-ceiling window units. The entire south-facing side is almost fully glazed. Wall construction is 24 cm (9.5 inches) brick with 18 cm (7 inches) external thermal insulation composite system (ETICS) – also a matter of personal preference, but not the topic here.
We are planning to use the Brügmann Bluevolution 82 profile. The additional cost would be about 1500 euros for all the windows. That means I would need to save roughly 80 euros per year, assuming a service life of about 20 years. The extra cost seems reasonable; however, we are hesitating a bit because we have already placed some orders... 500 euros, 1000 euros here and there...
Gradually, it adds up...
What is your opinion? Would the effort be worthwhile? Or are my standard windows already performing well enough?
Good luck
P.S. If there is interest, we can also discuss window insulation in general in this thread.
A clueless person going astray.
I am currently considering whether it is really worth upgrading the quality of the window materials. I know this is somewhat speculative. We have quite a few floor-to-ceiling window units. The entire south-facing side is almost fully glazed. Wall construction is 24 cm (9.5 inches) brick with 18 cm (7 inches) external thermal insulation composite system (ETICS) – also a matter of personal preference, but not the topic here.
We are planning to use the Brügmann Bluevolution 82 profile. The additional cost would be about 1500 euros for all the windows. That means I would need to save roughly 80 euros per year, assuming a service life of about 20 years. The extra cost seems reasonable; however, we are hesitating a bit because we have already placed some orders... 500 euros, 1000 euros here and there...
Gradually, it adds up...
What is your opinion? Would the effort be worthwhile? Or are my standard windows already performing well enough?
Good luck
P.S. If there is interest, we can also discuss window insulation in general in this thread.
I would say it’s not worth it.
Reason: You mostly have large glass surfaces facing south. Windows with better insulation also reduce solar heat gains. There are special types of glass for this (we have so-called "Solarwhite" glass) with a higher g-value, which lets more sunlight through.
I would also stick with the 0.7 glass rather than the 0.5. In the worst case, you won’t save energy but end up with higher energy costs because of the “better” glass. The weak point is usually the frame anyway.
Reason: You mostly have large glass surfaces facing south. Windows with better insulation also reduce solar heat gains. There are special types of glass for this (we have so-called "Solarwhite" glass) with a higher g-value, which lets more sunlight through.
I would also stick with the 0.7 glass rather than the 0.5. In the worst case, you won’t save energy but end up with higher energy costs because of the “better” glass. The weak point is usually the frame anyway.
Similar topics