SteamyTea

Shall see if the local library can get a copy.

Can you say, in general terms, what it covers?

Welcome. The only annoying thing about UFH is lack of insulation under it.

Can get an 'evergreen' F-Gas course here, about a grand. https://fgasregister.com/f-gas-training/ There is new legislation about the right to repair coming in. https://www.bbc.co.uk/news/business-56340077 The biggest issue, as usual in the UK, is planning law and implementation. You can forget all the rest, until that is sorted, it will be impossible to install ASHPs in too many locations. The Government has a target of 600k/year, but last year we installed 60k, bet most were on new developments.

Google's Sketchup can show shadows and sunlight hours and rainfall data can be got from the Met Office. PVGIS can show direct beam and diffused daylight, and the associated power. Half the time it is dark.

Like my bedroom then.

Yes it does look like chopped strand mat.

@Pocster

Different emissivity value maybe? Does amaze me that amateur 'inventor' can prove, with a thermometer, that the well established laws of thermodynamics are wrong. Temperature is not energy.

You can treat glass with a silane and alcohol solution to help it bond. It may need a bit more to make it further weather proof for the next ten years though. More details will be needed before a creative solution is thought up.

There may be a newer version. https://forum.buildhub.org.uk/topic/439-fabric-and-ventilation-heat-loss-calculator/

We used to stick the caravan roofs on with double sided tape. Was good stuff.

Stainless steel has a thermal conductivity of about a third of regular carbon steel. About 15 W/m.K. Nylon 6 is about 0.25 W/m.K. Basalt wall ties are around 0.7 W/m.K.

That comes down to how you want to measure it. Think insulation can look fantastic when expressed as a percentage.

Was it exceptionally rainy today? If so, could it be caused by a failure somewhere else i.e. gutter. There should not be a great deal of difference between your system and a GRP system as they are both reinforced resin systems.

Is it an interactive spreadsheet i.e. useful to others, or just a final statement of what you intend to do?

I use Lumberjack PU adhesive, but at a tenner a tube, it would be cheaper to buy some 18mm OSB.

I think £5000 is reasonable. I will have a few spare hours once I get the first coat of gloss on my window frames. Have you looked for a copy of BRE 497?

I have some size nine climbing shoes, and a harness.

The PV generation meter is separate to the supply meter. But I suspect you are right that the don't want the hassle.

We have discussed it on here. https://forum.buildhub.org.uk/topic/33386-thermal-bridging-psi-values-for-isotex/#comment-491162

You would have to check the specifications of the inverts. There should not be any reason, other than capacity limits, why you cannot have a 3 phase system and then add another 1 phase system. That is how microinverters work together after all. You will need 3 phase net metering or you run the risk of some power going down the line without being paid for. The FiT system allows for upgrades, as it can take additional generation into account, and subtract it.

Yesterday I posted up a link to PM and how Lord Haughty said that ASHP don't work. Well Evan Davis was on the WatO saying they had so many calls they are doing a bit more on it tonight. So Radio 4 at 5PM. Listen to Ed Reardon instead. Pippa Hayward is on it.

I shall have a look at what my spreadsheet churns out when I get some time. Pulling kitchen part at the moment, been years since it was properly decorated.

And his much more important daughter. https://en.wikipedia.org/wiki/Ada_Lovelace