Hello,
our idea is to build an urban villa with a hipped roof (approximately 22° roof pitch) with two full stories.
Now I have come across the topic of roof overhang. One supplier described 15cm (6 inches) as sufficient. After researching online, I found that besides the appearance, protecting the facade from moisture and providing shading are also positive aspects.
What do you think?
our idea is to build an urban villa with a hipped roof (approximately 22° roof pitch) with two full stories.
Now I have come across the topic of roof overhang. One supplier described 15cm (6 inches) as sufficient. After researching online, I found that besides the appearance, protecting the facade from moisture and providing shading are also positive aspects.
What do you think?
Of course, having an eave overhang also provides benefits on the ground floor. We have a three-story old building with a raised ground floor (so 3.5 stories) and about a 30–40cm (12–16 inches) roof overhang above the entrance, located over 10m (33 feet) high. When it rains normally, you can squeeze against the wall there and take shelter to find your keys. I would recommend a continuous 50cm (20 inches) overhang around the building; it offers excellent protection for the facade. Just search for "algae and external thermal insulation composite system (ETICS)" and look at the pictures. In 95 percent of cases, there is no roof overhang. Now search for a townhouse with a 50cm (20 inches) continuous roof overhang and algae—it certainly exists but is extremely rare. Considering the relatively small cost difference in the end, it’s clear that a 50cm (20 inches) continuous overhang is advisable. In the catalog images from Weberhaus, as far as I know, townhouses have 100cm (39 inches) overhangs all around, and it just looks really great.
(The main reason, without a doubt, is passive building protection!)
(The main reason, without a doubt, is passive building protection!)
H
Hausqualle26 Jul 2015 13:28daytona schrieb:
One supplier described 15cm (6 inches) as sufficient. What do you think? .. it should depend on your considerations regarding thermal insulation, solar exposure, and the orientation of the house ..We determined the roof overhang for the kitchen canopy using the sun position and radiation simulation (in PowerPoint). Although the difference between 20cm (8 inches) and 30cm (12 inches) probably isn’t very significant. I would think it is mainly an aesthetic choice – from 50cm (20 inches) onwards, it might start to provide some protection for the facade and windows.
Hello everyone,
I hope it’s okay to revive this thread. In another discussion, the topic of roof overhangs became quite intense. However, that thread (ᐅ Additional costs for residential unitsPage 9 | Experiences from homeowners and construction experts (hausbau-forum.de)) was actually about a different subject. To avoid derailing that thread further, I thought this might be a better place since it’s more on topic.
Personally, I find a large roof overhang (about 1 meter (3 feet)) on hip or pyramid roofs quite attractive and had planned it that way in my new build project.
My question is: How much does such a roof overhang increase the costs? Is the difference between 30 cm (1 foot) and 100 cm (3 feet) significant?
The roof area would obviously be larger overall. Can you roughly just add the extra roof surface area to the “normal” price (with a smaller overhang)?
Or is the construction of a (larger) roof overhang itself quite expensive and does it cause a noticeably higher cost increase?
I hope it’s okay to revive this thread. In another discussion, the topic of roof overhangs became quite intense. However, that thread (ᐅ Additional costs for residential unitsPage 9 | Experiences from homeowners and construction experts (hausbau-forum.de)) was actually about a different subject. To avoid derailing that thread further, I thought this might be a better place since it’s more on topic.
Personally, I find a large roof overhang (about 1 meter (3 feet)) on hip or pyramid roofs quite attractive and had planned it that way in my new build project.
My question is: How much does such a roof overhang increase the costs? Is the difference between 30 cm (1 foot) and 100 cm (3 feet) significant?
The roof area would obviously be larger overall. Can you roughly just add the extra roof surface area to the “normal” price (with a smaller overhang)?
Or is the construction of a (larger) roof overhang itself quite expensive and does it cause a noticeably higher cost increase?
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