Re: double glazing both sheets of glass low e2
Oct 16, 2012 12:54 pm
In my 25 years of experience I've never heard of both sheets being Low-e. Hard coating Low-e shouldn't be used on the face 2 of double glazed units, except for a fridge or cellar door. Low-e only prevents hear from going out not from coming in.
Re: double glazing both sheets of glass low e3
Oct 16, 2012 2:31 pm
Has anyone heard of double glazing with both sheets of glass low-e?
Its been specified in some plans?
I'm guessing they want no heat gain through the glass?
The principle is that low-E glass is a one way solution... if you number the glass surfaces from the outside, 1, 2, 3, 4, then in a heating climate we place the active surface of Low-E on surface 3, where it keeps the heat inside the home and in a cooling climate on surface 2 where it keeps the heat outside the home. In my opinion, there is a small difference in U value for low-E between heat entering and leaving, wherever the low-E is placed, and in Europe low-E has 2 U-values for that purpose. But if we suppose that low-E stops 80% of the radiant heat, then adding an extra pane will only work on the 20% remaining radiant heat, so I think that would not be very economical. It may be that the energy rater is simply trying everything to get the rating across the line...
Double Glazing in Aluminium & Thermally Broken Aluminium
Replacement Window Experts Including Installation (Melb)
Tel. 1800 326 326
Re: double glazing both sheets of glass low e4
Oct 18, 2012 9:05 pm
Some excellent info.
I checked with the architect and he confirmed that is what he specified.
It really didn't have anything to do with me and he was in little mood to chat.
Sign in or Join to reply to this Topic
ECOECONew Construction - Double Glazing 70sqm variation cost 28k??New Construction - Double Glazing 70sqm variation cost 28k??
Hi Kurshid I assume all the heads of windows and doors are aligned, so they will all be set at 2400 from the floor. The cost would be proportional as you are not asking…