ᐅ Cleaning Many Windows in a New Build – Tips for uPVC Frames?
Created on: 7 Dec 2025 10:09
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Marcelo84M
Marcelo847 Dec 2025 10:09Hello everyone,
We are about to move into our new build and are now faced with the task of cleaning all the windows properly for the first time. Since a lot of dust, dirt, and residues have accumulated during the construction phase, I want to avoid damaging the plastic frames – whether through the wrong cleaning products or excessive scrubbing.
Do you have any tips on the best approach?
Which products are suitable for a thorough initial cleaning without harming the surfaces?
For car care, I use some products from Koch Chemie, for example. Do you think their multipurpose cleaner could be safely used on window frames, or is it better to avoid it?
I would appreciate any experience and recommendations!
We are about to move into our new build and are now faced with the task of cleaning all the windows properly for the first time. Since a lot of dust, dirt, and residues have accumulated during the construction phase, I want to avoid damaging the plastic frames – whether through the wrong cleaning products or excessive scrubbing.
Do you have any tips on the best approach?
Which products are suitable for a thorough initial cleaning without harming the surfaces?
For car care, I use some products from Koch Chemie, for example. Do you think their multipurpose cleaner could be safely used on window frames, or is it better to avoid it?
I would appreciate any experience and recommendations!
J
Jesse Custer7 Dec 2025 11:04I would ask the manufacturer – at the time of the initial cleaning, we were provided with a special product that was not available on the market...
I would start by using warm water with dish soap. This will remove "normal dirt" and anything that might be greasy.
What remains is very likely to contain cement, lime, or gypsum, and for that, the best option is diluted hydrochloric acid. Be careful to use only diluted acid and wear protective clothing. Also, protect all mineral building elements (such as marble or granite window sills!). Afterwards, rinse thoroughly with plenty of clean water.
Hydrochloric acid is, for example, also found in cement residue removers, just to clarify in case someone thinks I’m crazy for recommending this.
What remains is very likely to contain cement, lime, or gypsum, and for that, the best option is diluted hydrochloric acid. Be careful to use only diluted acid and wear protective clothing. Also, protect all mineral building elements (such as marble or granite window sills!). Afterwards, rinse thoroughly with plenty of clean water.
Hydrochloric acid is, for example, also found in cement residue removers, just to clarify in case someone thinks I’m crazy for recommending this.
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Curiosius13 Dec 2025 15:02A glazier who also installs fire-resistant glass and similar products recommended a basic glass cleaner to his customer. The alcohol content in it removes dirt but does not damage the plastic... and it is inexpensive. Used personally...
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MachsSelbst13 Dec 2025 15:17Using hydrochloric acid on plastic windows is, in my opinion, not a good idea.
Professionals use a razor blade and some water. I used a ceramic cooktop scraper, which is basically a razor blade... with it, I scraped off paint splatters, screed splashes, etc., from both the glass and the plastic.
In my experience, it didn’t cause any scratches, but I’m not someone who wants to make a masterpiece out of everything.
Professionals use a razor blade and some water. I used a ceramic cooktop scraper, which is basically a razor blade... with it, I scraped off paint splatters, screed splashes, etc., from both the glass and the plastic.
In my experience, it didn’t cause any scratches, but I’m not someone who wants to make a masterpiece out of everything.
MachsSelbst schrieb:
Using hydrochloric acid on plastic windows is, in my opinion, not a good idea.What is the reason for your concern?Similar topics