ᐅ Installation of Windows – Sliding Patio Doors Long-Term Experience

Created on: 27 Apr 2018 08:25
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pffreestyler
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pffreestyler
27 Apr 2018 08:25
Hello,

I currently have the following offer for windows. Fortunately, I am able to get the windows and doors through family for less than half the price, so there is some budget available to possibly choose higher-quality window options.

However, I did not feel optimally advised in the store. For example, I was bothered by comments such as triple glazing not being absolutely necessary and that there are no standard sizes. These statements may not be wrong, but for me, double glazing no longer seems up to date for a new build. It is true that any window size can be made, but I want to make sure that retrofits like insect screens don’t have to be custom-made because my windows are 3 cm (1 inch) narrower, but rather that “normal” sizes that are always available will fit.

So far, it is clear that the windows are a bit too narrow for me. I am thinking of 1100 mm x 1385 mm (43 inches x 54 inches). Is this a common size, or would you recommend around 2-3 cm (1 inch) more? Privately, I was also recommended a mushroom-head lock (there is an apple orchard belonging to the municipality behind our property, then just forest).

Do you see any other useful additions? The construction will comply with Energy Saving Ordinance 16.

PS: Can you share any long-term experiences with sliding patio doors?
Technische Fensterzeichnung eines Kunststofffensters mit Maßen und Beschlägen
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Nordlys
27 Apr 2018 09:51
Are you dealing with renovation or new construction?
In new construction, the heat calculation determines the required window quality. For example, we wouldn’t have met the required 0.9 with double glazing and had to use triple glazing, whereas in a moderately insulated existing building, double glazing can be sufficient because it makes no sense if the window insulates better than the adjacent wall. Standard sizes exist; 11ant knows them. Contact him via private message.
In my opinion, mushroom head locks are standard. Regarding the long-term performance of sliding doors: no idea. Karsten
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pffreestyler
27 Apr 2018 10:13
Yes, it is a new build.

As an addition – I meant a lift-and-slide patio door, with a total width of at least 2 meters (6.6 feet).
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LukasSeiler
27 Apr 2018 14:27
Hello,

if you are building according to the 2016 Energy Saving Ordinance, you are almost required to choose triple glazing. This is because you need to meet a specified Ug-value for the glass (thermal transmittance). There are only a few manufacturers that manage this with double glazing, and then only with special gas fillings in the gap between the panes. Experience shows that in some cases even the "special fillings" cost more than triple glazing. When considering cost-effectiveness, there is no real discussion… triple glazing is far ahead.

I would definitely recommend triple glazing to you!

For the sliding door, I would advise you to pay attention to the desired width. A lift-and-slide door is probably not the right choice at a width of 2 meters (6.6 feet). Because of the narrow width, the travel path is not optimally loaded, making the lift-and-slide door difficult and cumbersome to operate. A better option here would probably be a parallel sliding door. These doors can be seen as the smaller sisters of lift-and-slide doors and are especially suitable for smaller opening widths.

I hope I could help you.

Regards

Lugge
11ant27 Apr 2018 18:25
pffreestyler schrieb:
Triple glazing is not necessarily required, and there are no standard sizes. These statements might not be wrong, but for me, double glazing in a new build somehow feels outdated

Glass quality matters as much as thickness and quantity. Triple glazing does not automatically provide (significantly) better thermal transmittance values. Also, thermal insulation for heating and solar heat gain control are not the same. So, more is not always better, and each type of glass has its specific application. Standard sizes are outdated; "made to measure" is the rule now. However, there are "stock sizes" where you can more easily find low-cost offers—these are usually found in large DIY stores.
pffreestyler schrieb:
I’m thinking about 1100 mm x 1385 mm. Is that a common size?

113 cm (44.5 inches) x 138.5 cm (54.5 inches) would be a common size that I would also recommend; 101 cm (40 inches) width is a bit too narrow. Your "110 cm" (the frame size is about 3 cm (1 inch) less than the structural opening dimension) is going in the right direction.

For your patio doors, widths of around 176 cm (69 inches) or 201 cm (79 inches) would be appropriate. At these sizes, you can forget about sliding doors. The clear opening for sliding doors is practically only suitable for very slim people. You’re better off with traditional hinged doors, double-leaf with a fixed mullion. The swing space for opening fits your situation; sliding doors under 251 cm (99 inches) are pointless.
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denz.
28 Apr 2018 12:46
Why nonsense?

We are currently planning with two lift-and-slide doors as well. One from the kitchen and one from the dining area to the terrace. Ours are 2.20m (7 ft 3 in) wide, and when the door is open, is the passage about 1m (3 ft 3 in) or not?

Detaillierter 2D-Hausgrundriss mit Küche, Wohnbereich und Gästezimmer