Hello everyone,
we are currently building a single-family house.
The one-time exterior painting is included in our contract and was completed last Friday. The plasterer offered us a second coat.
The only advantage, as we understand it, is that we would not need to repaint after 5 to 7 years, but later on.
The paint used is a Caparol silicone resin-based paint (white with a slight gray trim as a visual separation at the garage), and the cost is about 2500 euros net.
What has been your experience? Is it worth it?
Thanks in advance!
we are currently building a single-family house.
The one-time exterior painting is included in our contract and was completed last Friday. The plasterer offered us a second coat.
The only advantage, as we understand it, is that we would not need to repaint after 5 to 7 years, but later on.
The paint used is a Caparol silicone resin-based paint (white with a slight gray trim as a visual separation at the garage), and the cost is about 2500 euros net.
What has been your experience? Is it worth it?
Thanks in advance!
J
JayneCobb17 Oct 2023 02:31Buschreiter schrieb:
This has nothing to do with the color. Walls that gently release interior heat to the outside are less likely to be favored by algae. Google: algae on ETICS facades Fraunhofer Institute Thanks for the interesting tip!
I also looked into it – the most obvious solution, "infrared paint," still seems to be in its early stages.
"The most effective method [to prevent algae growth], according to research, is the use of IR coatings. These reduce the physical effect that ultimately enables microbial growth. Unfortunately, the currently available IR coatings are not yet sufficiently weather-resistant. However, the results in this publication show that it would be worthwhile to further develop these IR coatings to improve their weather durability."
K
KarstenausNRW17 Oct 2023 07:20Buschreiter schrieb:
THIS has nothing to do with the color. Walls that release interior heat slowly to the outside are usually not preferred by algae. Google: algae on ETICS facades Fraunhofer Institute Hello Buschreiter. Thank you for the hint. Yes, modern facade insulation systems promote growth (keyword cooling/dew point in the render).
This is one of the reasons for using mineral-based paint. Fraunhofer itself considers moisture on (not inside) the facade as the main factor for algae. Mineral render already works on the hydrophilic principle (absorbing water to keep the surface dry).
Silicone resin paints basically seal the render (lotus effect) and eliminate this effect. When the lotus effect disappears (which can happen after just one year), water remains on the render surface and it decays.
In contrast, silicate paint supports the hydrophilic principle. The render surface stays dry. This effect, along with the alkalinity (which does decrease over time), provides an environment hostile to mold and algae.
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