markc

I wouldn’t worry about that, no signs of settling away from first brick course, loads of bearing either side and brickwork above looks good. Lintel looks to be cast in situ so good chance it cracked while drying out.

I reckon this is just wind blown water with you saying stormy weather.

I’m guessing detergent .. looks too white for anything else

Inchworms are the larvae of geometer moths … 2.54cm worms doesn’t have the same ring to it.

You should use max. “Potential” voltage or open circuit voltage

I use Tapo plugs and you can control by app but also turn on/off using the button, nice bit is that if you manually over-ride, the next schedule cycle reverts back to auto control.

I would go simple heater (thermostat) and add any control for timer etc. far too much stuff now that requires an app to use it. i have just put two oil filled rads in my workshop but controlled with smart plugs for timing

A guy I used to work with was ok in metric as long as they were whole numbers in 100mm increments - everything else was an imperial add-on. 3500mm - 3.5m 3600mm - 3.6m 3612mm - 3.6m and 1/2 inch it made setting out conversations interesting to others.

Generally you don’t want any “pooling” points in ductwork, but if air is always moving then any condensation that does form should be quickly moved as it evaporates again.

Really depends on whether you need the drain, if it’s all redundant, seal it up. You don’t need to excavate anything if the end is in your house and it’s not used, just pour some concrete in. If you cannot get to the end that’s in your place, dig as close as you can, find the pipe and break it, then backfill the hole.

Keeping the post inside of the thermal envelope is the best option. A post inline with the outside looks great but presents you with a big thermal bridge.

Do you mean the glazing bars or the capping strips that retain the glass? Glass on outside keeps windows cleaner and easier to clean. In the past when glass panes were smaller, glass would go in from outside and finished / sealed with putty.

To keep cost down, Keep It Simple. If you want the brick facia, why not double skin blockwork and front / fascia using cladding although the design / render must be above 3m high so you will probably have to lose the step and thin down the roof / facia. definitely insulation under the slab and you might as well do walls while doing blockwork - or blown beads later on.

Motor?

Builder will have asked fabricator for a quote so you could ask to see it, remember nothing wrong with builder adding his cut, probably 20% because it’s not a simply buy in and there would have been some messing about. assuming you get the quote (remember you cannot really ask for any discount etc now) send it over and I will take a look, peace of mind rather than anything else.