Now often quoted in building or building part specification, a U-value is placed upon an assembly of components to rate how well that assemblage performs in terms of energy efficiency.
It is important to note that the U-value relates to the performance of the assemblage as a whole. For example, the U-value of a window unit will be calculated with reference to the glass panes, frame, sealants etc. and their performance as a whole.
The U-value gives a numeric rating of the amount of heat that passes through the building part, therefore the lower the value the better the energy efficiency.
If you enjoyed that post, then read these…
VAT for barn convertors
There is an update to this post at.
VAT for barn convertors – Update March 2009
It’s been a while since a VAT update so I thought I’d review the current position, especially in view of the pre-Christmas credit-crunch fuelled reduction in the standard rate of…
Whilst I have no immediate plans (or money) to install any electricity generation technology at the barn, I like to keep an eye on future opportunities and thought a review of…