I don't know their reasons, but mine used to come open during high winds
dumping tons of old muck and dust onto my landing. Its now held shut with
duct tape. No nasty whining noises or rattles either. The roof on this
property is open ie it can bee seen there are gaps under the tiles, so one
assumes if that hole was through to the house and a really spectacular wind
came it could blow many tiles off the roof.
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how could that happen? Surely aerofoil works on the roof itself, lifting the tiles off.
And my hatch is made of wood, way too heavy to lift like that. And hardly the end of the world if it opened, it might give me a fright that's all.
What of the possibility of air being able to rush from the house into
the reduced pressure of the loft, so suddenly changing the differential
pressure between the inside and outside of the roof and making it more
likely that the roof is damaged or ripped off?
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