craig

Double glazing at 1.2Ug, isn’t bad at all but expected Ug now for double glazed. I can only suggest getting a system that can handle the weight.

Factory glued but also done on site when required, as sometimes you need to fix through the frame and glass needs to be supplied loose.

What do I use when it's a cost thing? Aluplast Ideal 4000 (Double) Aluplast Idea 8000 (Triple) Alternatively I would look at Rehau, Gealan or Salamander.

Very easy to replace, obviously not as easy as glass into the frame without glue but it's a security thing as well. Doesn't take much longer to remove the glue, clean and put new unit in with the glue. It's also an extra, not standard.

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The amount of chambers, welds, material used (polybutylene terephthalate (PBT) engineering plastics rather than steel for strengthening and thermal improvements

It definitely is, we still come across windows fitted horrendously, newspapers stuffed in for insulation.

For me, Aluplast, specifically the Energeto 8000. Is it the cheapest? No.

This is an upgrade? It should be🤬 standard, that's why I assumed it was foam injection for the Energeto 8000

Yes, just trim it back, will make your life easier. Without knowing the product supplied, I can't really say what the values are as I would be guessing but in principle, if triple and insulated frame (foam injected into the frame), you're probably looking at the Energeto 8000.

Foam just needs tidied up and then plaster, also aluplast, well done. 4000, 8000 or Energeto? Did you purchase from a UK supplier?

You should be able to take measurements internally/externally in the same fashion. That diagram is perfect. The internal measurements compared to external will be different and depends on finishes, they could be the same but if brick to brick externally, then I’d expect internal to be slightly smaller as the window measurement will be reduced by the plasterboard (if it is not sitting behind the ingo/check reveal). I doubt it is a check reveal if you’re in England.

Without seeing the outside, it’s impossible to say but do you mean survey as in inspect?

The best person to speak with is @fatgus, he was looking at them recently. I’ll drop you a message.

They don’t have a clue because they don’t check the details or enquire where the reed contacts come out of the frame. Most don’t even know where the reed contacts are located.