Solar gain, please don’t forget the science;

Just Googled ‘how do solar tubes work’. I quote from the very first search result that came up,

‘and if you just loathe the heat that accumulates inside the room, (brand name) is perfect for you because it effectively eliminates heat collection from the sun. It mainly gathers light and blocks the heat…’

Wrong, wrong, wrong, wrong, in my humble opinion, wrong!

Unfortunately this is not an isolated instance, another solar pipe report,

‘But energy efficiency is an issue with glass, whereas with the (brand name) it’s pretty neutral, there’s no solar gain….’

and that’s from a Marketing Director !

They, as so many in the glazing field have been misled and misinformed as to how the coatings on glazing work that they in turn incorrectly advise.

Plain glass, untreated, is a pretty good conductor of solar energy across its whole spectrum (range of wavelengths). Coatings and tints are added to glazing to absorb or reflect particular wavelengths of solar energy dependant on the proposed use for the glass. (more…)