Why insulate the attic floor?
Heat rises – to prevent unnecessary heat loss, one of the most financially rewarding energy efficient measures a home owner can take is to insulate their attic.
If modern guidelines are followed a 150mm layer of insulation should be placed between the timber joists running across the attic floor and another 150mm should be placed above this in a crossed format.
e.g. If the layers between the joists are layed east-west the crossed 2nd layer would be layed north-south.
Any more than this total 300mm insulation depth would be almost overkill as the effectivesness of additional insulation would be minimal and not likely to be cost effective.
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When a client visits an architect they should present an outline of the builing they wish see on print. Often people will have features and room sizes in mind but there is also a lot more to think about if you want the architect to design a building that is functional, beautiful and cost effective to inhabit.