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It's all Chinese to me: What's the best spec for a roof overhang? One thing is clear from this Chinese temple: The more the merrier! ;) It’s all Chinese to me: What’s the best spec for a roof overhang? One thing is clear from this Chinese temple: The more the merrier! šŸ˜‰

 

Why have a roof overhang?

Roof overhangs protect your house from rain, sun and even wind, as the eaves can have impact on the wind loading on the roof.

The damages these elements can causeĀ to your roof are not to be taken lightly.

In fact, many experts state that every house should have a roof overhang.

 

The bigger, the better?

If it’s about protecting your windows and doors, it seems yes, the longer your roof overhang, the better. In addition, a roof overhang can lower your energy costs.

Of course there are engineeringĀ factors that restrict the length of the overhang.

However, it’s far more common thatĀ roof overhangs areĀ builtĀ too stingy.

 

The ideal spec for roof overhangs

The size of the roof overhang depends on the property.

For example: On very tall buildings, there are hardly any benefits of roof overhangs as the surface areas of the walls are so high. ButĀ roof overhangs are a great system to protect housesĀ 3 stories and under.

GreenSpec mentions an emerging rule-of-thumb that the overhang should be equivalent to a third of the overall wall height for protection from rain.

But that would mean we buildĀ multiĀ story buildingsĀ withĀ a roof for every floor, like a Chinese temple. šŸ˜‰

So my advice is: Try and incorporate as much roof overhang as possible. šŸ™‚

 

Also read:Ā What is the ideal spec for stairs?

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