dpmiller

did you forget the fit the guide?

the door is basically a sheet of 30mm PIR with timber edging and hardboard cladding IIRC

I fitted one of these, are you looking for something better-insulated? https://www.keyliteroofwindows.com/products/loft-ladders/

those dewalt angle drives are great aren't they?

Mine sits on flexifeet, on an extended step at the back door. There's a rear-entry gully there which gets some of the condensate. I also isolated the step from the wall of the house with a sheet of polystyrene before the pour to be doubly-sure of no vibration transfer...

It doesn't. But Insulation *over* the slab with UFH in a screed or board above will be more responsive.

I fear most trade merchants live off the back of the big contracts. Accounts with the Councils, Govt departments, big manufacturing etc. Cost not an issue, discounts not requested... Similar online too. RS Components have a massive stockholding and excellent response. As do Farnell. But CPC is just another arm of Farnell and they sell most of the same stuff but cheaper. The first to are go-tos for the Agencies and Industry, the other where trades and retail go when they can wait a day or two for stock...

Anti-scalding protection can be a single thermostatic mixer at your hot tank (most come with it as standard now) but many here will counter that Legionella controls are unnecessary in a sealed system full of hygenic water...

Ignore it?

do the whole step with whatever made the stain

have you checked for "other brand" options or just BG?

tried reversing the clamp?

No reason why not. It looks like the smaller of two standard sizes so something like this: https://www.ebay.co.uk/itm/123755047151?hash=item1cd06028ef:g:n9gAAOSwtxNczJm9

there's a grille on the underside of the circled bit. it blows "down" onto the tiles.

That is indeed a fact, especially when the RH is high. Which is why there is a defrost cycle. Which still results in an overall COP greater than 1.?

there's probably an installer setting for max temp, likewise for the cut-in point.

so the ASHP cuts OUT at 55c but what is it's cut IN point? It had started to reheat the tank by the time you were finished, but that's too late.

@pocster are you talking about line level or speaker level here? Mixers are low-level/high impedance, and you've already said your Rasps have inbuilt amps?

Are all the amp outputs simultaneously connected to only one speaker? can each Pi output a DC signal saying it's active? Some PA/ background music amps have a "priority" input for announcements/ alarm signals over the music.

why would you presume that tax evasion is the only reason for preferring cash? It costs money to lodge into many business accounts -whether cheque or cash- and so if you're going to (say) need cash to buy the shopping with, there's no need to drag it through multiple bank accounts as long as you note it in your books as income. I know, I do it.

And that is your business how?

why?

So the main contractor is subbing out much of the work too then?

A lot of the componentry will be the same, and (no doubt) there are only so many suppliers of the wee rubber trims for around the pipes, and the plastic top/bottom covers...

the blower doors are calibrated with removable plugs to change the range of the meter. Dunno why there'd be a problem with using the kit as designed?