Hello,
This year, I plan to build a bungalow on my plot with my construction company. A shed roof is basically a flat roof but slightly angled to allow better water drainage. In the past, flat roofs often had problems with leaks after a few years.
How is the modern construction method for a shed roof compared to a hip roof? Is a hip roof always more reliable than a shed roof in terms of leak prevention after 20 or 30 years? Or have shed roofs become watertight enough nowadays that, if built properly, there are no longer any disadvantages compared to hip roofs?
Good luck
This year, I plan to build a bungalow on my plot with my construction company. A shed roof is basically a flat roof but slightly angled to allow better water drainage. In the past, flat roofs often had problems with leaks after a few years.
How is the modern construction method for a shed roof compared to a hip roof? Is a hip roof always more reliable than a shed roof in terms of leak prevention after 20 or 30 years? Or have shed roofs become watertight enough nowadays that, if built properly, there are no longer any disadvantages compared to hip roofs?
Good luck
RomeoZwo schrieb:
From my home office, I can see the roof of our neighbor’s house (flat roof bungalow, built around 1980), and there is always water standing on the roof. Even after two days of dry weather, it’s still there. That’s why I don’t want a flat roof, but rather a shed roof, so that water can never accumulate on the roof in the first place!
And regarding 1980: It was the same with my parents’ house from the 80s. But now it’s 2021. That’s why I’m asking about a shed roof.
chris909 schrieb:
A shed roof is basically just a flat roof but slightly angled so the water drains better. No, a shed roof is the single-sloped version of a gable roof: beyond the ridge, it does not slope down again to a second eave.
Theoretically, if you have enough money, you could also add a hip to a shed roof.
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Regarding photovoltaics, you can calculate the yields for each location and orientation using PVGIS. For mounting, a hip roof is naturally the least favorable due to its shape (square modules on triangular or trapezoidal roof sections). Additionally, each side likely requires its own string wiring, etc.
With the same pitch, I suggest that a shed roof provides a single, flat surface that can be covered evenly, resulting in fewer joints, corners, or edges. Whether this makes a significant difference in practice is another matter. If we consider only vulnerability, the angle is probably more influential than the presence of one more or fewer edge, assuming proper workmanship. We changed from the initial design’s 12° pitch according to the architect to 20° because it is clearly simpler and more cost-effective—for example, no need for a sealed underlay or extra fastening of the tiles. The rest mainly comes down to personal preference, permissions (building permit/planning permission), and depends on the overall architectural intent.
With the same pitch, I suggest that a shed roof provides a single, flat surface that can be covered evenly, resulting in fewer joints, corners, or edges. Whether this makes a significant difference in practice is another matter. If we consider only vulnerability, the angle is probably more influential than the presence of one more or fewer edge, assuming proper workmanship. We changed from the initial design’s 12° pitch according to the architect to 20° because it is clearly simpler and more cost-effective—for example, no need for a sealed underlay or extra fastening of the tiles. The rest mainly comes down to personal preference, permissions (building permit/planning permission), and depends on the overall architectural intent.
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pagoni202020 Apr 2021 17:43I would build exactly what I like best or what best meets my priorities. Different roof types also offer various interior design possibilities, so I would decide based on that.
A flat roof today is just as watertight as a pitched roof if it is properly constructed. While some older flat-roofed bungalows from the 1970s and 80s may have had issues, I visited such buildings even back then and never had wet feet.
Problems can still occur during construction everywhere—for example, with the installation of windows, skylights, connections, joints, thermal bridges, poor ventilation, and more.
For example, look at companies like BAUDER or similar; they build functional flat roofs everywhere using the latest materials. So I believe concerns about flat roof leakage mainly belong to an older generation.
I would definitely not choose a roof I want to have based on worries about watertightness.
Nowadays, you will find walk-in showers with tiled floors in every house, something hardly imaginable in the past.
A flat roof today is just as watertight as a pitched roof if it is properly constructed. While some older flat-roofed bungalows from the 1970s and 80s may have had issues, I visited such buildings even back then and never had wet feet.
Problems can still occur during construction everywhere—for example, with the installation of windows, skylights, connections, joints, thermal bridges, poor ventilation, and more.
For example, look at companies like BAUDER or similar; they build functional flat roofs everywhere using the latest materials. So I believe concerns about flat roof leakage mainly belong to an older generation.
I would definitely not choose a roof I want to have based on worries about watertightness.
Nowadays, you will find walk-in showers with tiled floors in every house, something hardly imaginable in the past.
chris909 schrieb:
But now we are in the year 2021. So my question is about a shed roof.And a shed roof with the same pitch has absolutely no difference compared to a hip roof, at least when it comes to waterproofing issues.
(It’s like asking whether you can drive 200 with a red car or if a blue one is better.)
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