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... that you know of!

Things are moving on, my involvement is doing my homework to make sure we have nailed down all our options ( windows ordered, heating planned etc etc). Then as I am the chippie for the build, come spring ( when the better weather is here) I will be on site cracking on.

Finally up to wall plate this afternoon. Trusses coming on Wednesday! Attempted a little videography with a cheap Drone, had more fun filming the dog as you can tell ?

It lives!

PeterW, go to the top of the class,? that's exactly what it is. It is only the considerable amount of knowledge that I have gained from this forum that has allowed me to plan our build with so much detail ( well, I have not missed anything yet !!!!!!!!)

Your forgetting that @JSHarris does what I would do, and utilises the buffer as a DHW pre-heat via a PHE fed from a second set of tappings. For a dumb buffer I agree, as long as the ashp can draw back from the UFH water, as a medium to aid defrost, then a buffer with a unified slab circuit may well be ott. NOTE: This would be a very different argument in a regular British BR built house however, so we must remember that these 'disciplines' need to be taken as suitable for this topic alone. Just a nudge for the wider viewing audience.

Hi Joe. There are 3 ways you can adjust the flow on a radial duct system, manifold- a ring is inserted at the manifold and restricts the air by closing over the hole, we do not really like this as over time the ring is an obstacle that can gather dirt restricting even more air and requires you to service the manifold Plenum - the plenum has a damper inside to adjust airflow allowing for any type of grille and is popular if fitting architectural types of ceiling valves Air valve - 90% of all systems adjust at the air valve as this allows for easy adjustment and noise is normally only a issue if using poor quality air valves

The Triangle bits are not for installation but we believe are used for cleaning the mesh filter if retained, it is also important that you remove the mesh if you installing these vents in a place that you can not easily get access for annual cleaning

That's a good warning about the condensate drain from a BOILER, but as already stated it would not apply to condensate from an mvhr unit.

Interesting point @readiescards. All the systems I have seen deal with external condensation (always on the ducting) by ignoring it. Those that had no condensation were wrapped up warm in their little jackets or their EPS coats.....

Its fine - this refers to gas condensing boilers as their condensate is acidic. MVHR is just water either off the heat exchanger or rainwater.

Why should this be moved to boffins corner, I am very interested in this thread as it WILL effect the design of my heating system. Yes I understand that I may not understand all the technicalities but I will understand the outcomes. I do understand that some may disagree with others, that's life. Keep it coming chaps.

Definitely want to keep your hedge trimmed.

I think maybe your neighbour will appreciate you having a tidy garden. Here are some hedge designs I think you may wish to consider that will be visible from his/her property:

My only observation is there are no holes in that steel beam. It's to late for you, but anyone reading should take note. you really want 3 or 4 good sized (100mm?) holes in every beam. Otherwise when your electrician and plumber comes to first fix the wiring and plumbing, some pipes and cables are going to have to take a very much longer route to get past that beam, often going down or up into another wall just to get around it. (the job I am working on at the moment, the steel manufacturer put the holes in, then the builder put them in the wrong way round, so only 1 of the 3 holes is of any use, and it has ended up VERY full) It's nice to see it taking shape. Most people when it's just a slab think "it's way too small" but when you see it with the walls up, you suddenly realise is is quite big after all.