Re: BASIX for ICF Build2
Aug 28, 2018 11:02 pm
I am not in the industry but I have just had to deal with basix certification. I tried the online assessment but as you might have seen the rules have changed somewhat. So my suggestion is to find an energy consultant. Actually it’s all you can do. Looking to pay 650 to get one done.
Re: BASIX for ICF Build3
Aug 29, 2018 2:11 am
Frankly speaking, R values of ICF walls are already provided by the manufacturers, so any BASIX assessor should be able to simply use them in their models. Bad thing that they are likely NOT to be taking thermal mass effect into their calculations.
However, it might have changed with this new certification rules Ardo is talking about (and if did it, it only works in your favour).
Re: BASIX for ICF Build4
Sep 03, 2018 12:26 am
You are correct that "R" values are supplied, but it can be difficult to add to the NatHERS assessment. I have had one done previously and don't believe it was done correctly as the wall insulation is R 0.5 less than specified by the OEM and only came out at 7.3 Star. I am not concerned too much about the "New Rules" are I have used my old NatHERS and punched it into the BASIX assessment last night and the only change appears to to be the "Energy Target" in now 50 where previously it was 40.
I have decided to make a number of changes to the design as well as add BAL-FZ roller shutters that are now available, which weren't when my original plans were submitted. This will allow me to change my window selection to a cheaper "standard" window (Double Glazed still) which has potentially better performance in the longer term as my BAL issue will be removed in 5-7 years, then I will be left with really strong secure roller shutters.
So maybe I should of asked for a Energy Consultant to do a new NatHERS Certificate. then I could do the BASIX myself.
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