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Quite an interesting piece on the BBC suggesting that 3G may be effectively standards under the new building regs. including a new type of 3G called "Architectural Technical Glazing' - U-value ~0.5 - with a very thin centre pane, which is supposed to make it more practical as a 2G replacement. I'm not completely convinced, since glazing is only one aspect and 2G is available at a U-value of under 1. As ever, imo it will be down to how to meet the minimum requirement at the minimum price. https://www.bbc.co.uk/news/business-67161076

Hi, Has anybody got any recent quotes from Norrsken or Rationel Aura Plus windows? We are looking at 45 sq m of glazing and need them to be alu timber clad and triple glazed. Trying to work out supply and fit price per metre. Also, what sort of lead times were given to you? Appreciate any help!

On the last two mornings where its been pretty cold outside I've found a small amount of condensation on the insides of some of our triple glazed windows, I promised the good lady this would never happen!! The house is built to passive standard, has good airtightness and MVHR. Should I be getting condensation on the insides of the windows, and if not, what is going wrong?

I stumbled on this site while researching MVHR and saw some great discussions and expertise. I have a 112 m2 top floor flat part of a mill converted in 1995. I am looking at sensible upgrades for the next 10-15 years. Presently I have Electrical heating (1995 storage heaters) 12000 kWh pa , aluminium double glazing from 2010 (3 x 6 panel windows 2.3mx1.6m), have heard mention that frames are not thermally efficient, thick solid stone walls (580mm window returns) insulation status unknown, 3.5m high ceilings lounge hallway and bedrooms, observed 200mm loft insulation. Lounge and bedrooms are long and narrow and perhaps not well suited to present (lack of ventilation) Perhaps the biggest immediate concern for next winter is high CO2 levels (measured by Awair sensor) in the flat unless windows are opened. It also gets very stuffy in summer and I suffer from hay fever. There is no vent fan (apart from cooker hood with activated carbon filter) in the kitchen. Its been blocked up probably because the flexible trunking collapsed(a neighbour experienced this). The only connections to the outside are two 95mm?(100 nominal?) holes through the stone work which are connected through boxed in trunking along the floor (wouldn't mind moving it up to reclaim floor space) to kitchen (originally) on one, and 2 bathrooms on the other. The bathroom fans suck but no perceptible flow at outside of building. Maybe disconnected by previous owner and routed into loft space (on the other side of a fire division - not good) I am thinking that PIV system might be best rather than MVHR due to forum mentions on air leakage, although a lot of it might be beneficial in terms of heat input... The available 95mm openings are in bedrooms and I need to minimise cold piping, Can I use one opening for fresh air and one to take kitchen and 2 bathrooms out. Or is there a way to alternate (breathe in, breathe out, like ....lungs...) For moisture control, I tend to finish the timed laundry for when I can use the dehumidifier on Economy 7 for a couple of hours in the morning (early riser). I see the dehumidifier as effectively free to run as I have electric heating anyway. Seeking expert commentary, please, especially on whether I can get good ventilation with the two 95mm openings to the outside. Can I anyone recommend an approach and contacts for HVAC design?

We really like Internorm triple glazed windows....and pricing at the moment is not too bad. However, we had originally planned to have solar glass to reduce solar gain in the summer. Someone mentioned to me that solar glass on triple glazing can appear very dark. Does anyone have experience of/views on this pls?

Our VELFAC windows are being delivered next Wednesday and our VELFAC approved installer, E R Aluform, has just advised they're ceasing trading as of today. We paid them a 50% deposit. Please no abuse on why we agreed to pay them a 50% deposit for the installation; I'm feeling rather fragile and would be grateful if anyone can offer any advice on what to do— whether we can recoup the money? and / or who can fit VELFAC windows at such short notice. Thanks in advance

Advice Please! A triple glazing rep (Gaulhofer) is due to call tomorrow. And I don't want to look too much of an idiot when talking to him. So what should I look for, or ask about? I know the basic stuff about his brand of windows, like the figures for the glass and frame -they're all within the range for PH - if they weren't the rep wouldn't be calling. I need pointers towards what I should look for in terms of manufacture. I'm conscious of the recent thread on windows and security, so I'll ask about the relevant standards. But to be honest with you, at the moment, to me, windows are windows are windows. But I'll be spending a good chunk of our budget on them. .....Not a time to get it wrong.