it does not affect the U value of the sealed unit even if it is fitted back to front.
it does not affect the U value of the sealed unit even if it is fitted back to front.
i don't think that this is correct
I have been thinking about this and my initial thoughts were that phil was probably wrong but I believe he may be correct. the u-value of a product is a measure of how much heat is lost through the total unit.
the coating on k glass I believe is normaly on the outer face of the inner piece of glass now if the unit was fitted so the coating was on the inner face of the outer pane the heat would be reflected in the same way and be prevented from reaching the outside, thus the u-value would be preserved.
however this reflected heat would warm up the gap in the sealed unit and not be reflected back into the room so much. Therefore having the same u-value but being less efficient
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