ᐅ Retrofit Installation of a Roller Shutter in an External Thermal Insulation Composite System (ETICS)
Created on: 13 Apr 2021 08:54
M
Mbk84
Hello everyone,
unfortunately, we did not install a roller shutter on one window and would like to add one now. Thanks to permanent home office, the room is now being used differently than originally planned and therefore needs darkening for the summer.
The roller shutter box to be installed is 14x14cm (5.5x5.5 inches), and the external thermal insulation composite system (ETICS) is 17cm (6.7 inches) thick. My idea was to cut out exactly this 14x14cm (5.5x5.5 inches) section from the ETICS above the window and then install the roller shutter box in this space. This would leave about 3cm (1.2 inches) of ETICS remaining, and I wouldn’t have to do anything on the facade. Essentially, this is the same setup as with the other roller shutters.
Is this a reasonable approach? Or would this cause significant issues regarding insulation or thermal bridging? THANK YOU VERY MUCH IN ADVANCE 😀
Here is a schematic of my plan:
unfortunately, we did not install a roller shutter on one window and would like to add one now. Thanks to permanent home office, the room is now being used differently than originally planned and therefore needs darkening for the summer.
The roller shutter box to be installed is 14x14cm (5.5x5.5 inches), and the external thermal insulation composite system (ETICS) is 17cm (6.7 inches) thick. My idea was to cut out exactly this 14x14cm (5.5x5.5 inches) section from the ETICS above the window and then install the roller shutter box in this space. This would leave about 3cm (1.2 inches) of ETICS remaining, and I wouldn’t have to do anything on the facade. Essentially, this is the same setup as with the other roller shutters.
Is this a reasonable approach? Or would this cause significant issues regarding insulation or thermal bridging? THANK YOU VERY MUCH IN ADVANCE 😀
Here is a schematic of my plan:
I assume the house is finished and plastered? Usually, the roller shutter box should be installed further outside so there is some insulation left between the roller shutter and the solid wall. Alternatively, use an insulated roller shutter box (is that one then deeper?). Otherwise, you’ll end up with a perfect thermal bridge (or more accurately in this case, a cold bridge). The external insulation system (ETICS / external wall insulation) must remain stable, but 3cm (1.2 inches) of remaining insulation is rather “flimsy” and the plaster may crack... If the plaster is already finished, as I assumed above, I hardly think it’s possible to remove the “block” without damaging the plaster. Better ask the plasterer or the installer of the external insulation system!
i_b_n_a_n schrieb:
I assume the house is finished and plastered? Ideally, the roller shutter box should be installed further outside so that some insulation remains between the shutter box and the solid wall. Or use an insulated roller shutter box (is that one deeper?). Otherwise, you get a perfect thermal bridge (or in this case rather a “cold bridge”). The external insulation system (EIFS / external wall insulation) must remain stable, but 3cm (1 inch) of remaining insulation is rather “flimsy” and the plaster tends to crack… If the plaster is already finished as I assumed above, I doubt you can remove the “block” without damaging the plaster. Better to ask the plasterer or the installer of the insulation system! Thank you very much for your response!
Yes, the house has been finished and plastered for over a year. We are very frustrated that we didn’t deal with this from the start… but it can’t be changed now 😕 I would try to cut out the “block” from underneath, hoping that this way the facade plaster won’t be damaged. The area is only about 1.00m (3.3 feet) wide. Also, I would refill the small cavity between the remaining insulation (around 3cm (1 inch)) and the roller shutter box to prevent any movement.
I understand the issue of the “cold bridge” in principle, but all our other roller shutters are installed the same way. They are plastic boxes above the windows with about 1cm (0.4 inch) of insulation plus plaster on the front. Wouldn’t the thermal bridge problem apply there as well, or am I misunderstanding something?
i_b_n_a_n schrieb:
As an idea, maybe it would be better to use a venetian blind with narrow (60mm (2.4 inches)) slats? It might require less installation depth and therefore leave more remaining insulation thickness both inside and outside.True, good idea. Thanks! I’m just afraid it might look odd if all the windows have standard roller shutters and only one suddenly has a venetian blind?!
Mbk84 schrieb:
Due to permanent remote work, the room is now used differently than originally planned and therefore requires blackout coverings for the summer.Is a venetian blind not an option?https://www.instagram.com/11antgmxde/
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