Originally Posted by SimonH
I'm totally ignorant when it comes to things like this, but am very curious as we'll be extending our house in the near future.
One thing I intend to do is replace the existing wooden trusses with metal ones to eliminate the potential problem with termites, but can you explain to me the advantage of insulation. In my mind, hot air rises and therefore any insulation will prevent heat loss, which is great here but surely the opposite of what we want in the Philippines
Just about to shoot off to the airport to catch a plane to Manila ... but,
Insulation works both ways. It stops thermal transfer... whether heat (beating down on the roof, as in the tropics, or trying to exit via the roof, as in winter here in the UK) or cold... as in a fridge, or an airconditioned space.
Good ventilation is also important in hot countries, to create a cool breeze blowing through, where there is no air-conditioning. It also pushes the heat OUT.
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