Hello everyone,
we are now about to install the windows… As far as I know, the window reveal must always be filled before installation. This has been done everywhere, but as a layperson, I’m not sure if this is correct..? My site manager tends to agree with everything and so does not have much expertise (a request for a replacement has been made).
From the picture, it can be seen that this was done only with cement mortar.
The exterior wall structure is: 1cm (0.4 inches) plaster (interior), 17.5cm (7 inches) Poroton brick, 16.0cm (6.3 inches) insulation, 1.5cm (0.6 inches) plaster (exterior).
Friends who have recently built their homes say that a smoothing coat must still be applied. Is that true, or would this work as it is (see picture) to ensure airtightness?
we are now about to install the windows… As far as I know, the window reveal must always be filled before installation. This has been done everywhere, but as a layperson, I’m not sure if this is correct..? My site manager tends to agree with everything and so does not have much expertise (a request for a replacement has been made).
From the picture, it can be seen that this was done only with cement mortar.
The exterior wall structure is: 1cm (0.4 inches) plaster (interior), 17.5cm (7 inches) Poroton brick, 16.0cm (6.3 inches) insulation, 1.5cm (0.6 inches) plaster (exterior).
Friends who have recently built their homes say that a smoothing coat must still be applied. Is that true, or would this work as it is (see picture) to ensure airtightness?
Mürker13 schrieb:
I am just wondering why the windows are flush with the interior masonry. Wouldn’t that actually create a thermal bridge, or am I mistaken?You are mistaken. The wall is 17.5cm (7 inches) thick and each window is set 2cm (0.8 inches) back from the outer edge. There is enough clearance on the inside.
lin0r87 schrieb:
You are mistaken.
The brick is 17.5cm (7 inches) and each window is set 2cm (0.8 inches) back from the outer edge. There is enough clearance inside. I’m not concerned about clearance inside; the window should be flush with the exterior insulation.
Mürker13 schrieb:
It's not about the rebate on the inside; the window should be flush with the insulation on the outside.I will take a look in the energy guide. It stated how the window should be installed to achieve value X.
lin0r87 schrieb:
I’ll check the energy certificate. It explained how the window should be installed to achieve value X.There will be insulation added in front, and right at the corner between the window and the insulation, the masonry is not properly insulated (maybe 2-3cm (1 inch)). The window would need to be set back approximately the thickness of the masonry insulation to ensure consistent insulation and avoid thermal bridges.
Mürker13 schrieb:
There will be insulation installed in front, but right at the corner between the window and the insulation, the masonry is not really insulated (maybe 2-3cm (1 inch))
The window should have been set back by about the thickness of the masonry insulation so that everything is evenly insulated and no thermal bridges occur. A 3cm (1 inch) insulation board will be installed at the window reveal.
Now I have shared all I know. I will inquire further.
lin0r87 schrieb:
There will be a 3cm (1¼ inch) insulation board applied to the window reveal.
Now I have reached the limit of my knowledge. I will look into it. This is the installation method I know, as shown in "Window 2."
For "Window 3," I moved the window further back to illustrate what I mean; it is always difficult to explain. The masonry is properly insulated, and the window also has a certain U-value to meet the overall insulation requirements.
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