ᐅ Renovating Leaky Wooden Windows or Installing New PVC Windows
Created on: 13 Feb 2021 18:52
C
Ciko1981
Hello everyone,
We have 9 windows in our house, 5 of which are floor-to-ceiling windows.
The windows are 36 years old.
They are made of wood, some are quite drafty, and the paint hasn’t been renewed for years.
The wooden windows have a U-value of 3.1.
The new double-glazing has a U-value of 1.1.
You can currently hear the cars from the street side.
The cost to replace the window seals and repaint is around 2000 euros.
New plastic (uPVC) windows with window sills including installation would be about 13,000 euros.
In my opinion, renovating the windows is not worth it; new glazing, seals, and fittings would cost around 4000–5000 euros.
My gut feeling says new windows...
What do you recommend?
The carpenter does not guarantee that the seals will be 99% airtight if replaced.
Thank you very much.
We have 9 windows in our house, 5 of which are floor-to-ceiling windows.
The windows are 36 years old.
They are made of wood, some are quite drafty, and the paint hasn’t been renewed for years.
The wooden windows have a U-value of 3.1.
The new double-glazing has a U-value of 1.1.
You can currently hear the cars from the street side.
The cost to replace the window seals and repaint is around 2000 euros.
New plastic (uPVC) windows with window sills including installation would be about 13,000 euros.
In my opinion, renovating the windows is not worth it; new glazing, seals, and fittings would cost around 4000–5000 euros.
My gut feeling says new windows...
What do you recommend?
The carpenter does not guarantee that the seals will be 99% airtight if replaced.
Thank you very much.
R
rianovian14 Feb 2021 11:23Ciko1981 schrieb:
Do you have triple glazing?
Is there external insulation on your house?
Three different companies visited, none recommended triple glazing because there is no insulation and mold could develop.
Then one company from Weru came,,,, he said that if the masonry is thicker than 30 cm (12 inches), there is no mold issue with triple glazing. Of course, proper ventilation is still necessary.
And the best part, triple glazing is supported by the KfW, so you get reimbursed 20% of the total amount.
Best regards In fact, we chose triple glazing (and also had it subsidized). We also have about 3–4 cm (1¼–1½ inches) of external insulation plus facing bricks. So, no problem.
Without insulation, I would have chosen double glazing.
What you could do to get more precise information: investigate the wall construction from the building documents and research the U-value. Solid masonry (without special fillings, etc.) has a relatively poor U-value… even if the wall is quite thick…
There might also be the criterion of aesthetics. Let’s say the windows are made of mahogany. Cleaning them and treating with varnish oil plus a bit of reddish interstain creates a visual dream. And all that for less money than new plastic windows, no question what I would do. To hell with that little extra insulation.
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nordanney14 Feb 2021 12:00renovierer schrieb:
The windows will still be the part with the worst U-value, so that condensation always forms there and not on the wall... That argument doesn’t make sense, sorry. Proper ventilation and heating are essential to prevent mold in a building.
If a building component is cold, moisture in the air will condense there. It doesn’t specifically target the window. So if you don’t ventilate and heat properly, mold will develop everywhere.
R
rianovian14 Feb 2021 12:18nordanney schrieb:
That way of arguing doesn’t make sense. Sorry. Proper ventilation and heating are essential for a mold-free home.
If a building component is cold, moisture from the air can condense there. It does not specifically target the window. So if you don’t ventilate and heat properly, mold will develop everywhere. At least we agree on the second part ;-) Heating and ventilation are a must!
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