New versus Old

[foxhole]

Currently extending home, considering re-use of current hardwood frames , just painting them black, but are they suitable, would we need to replace glazing units? [what are current requirements for double glazing , thickness of units?].I think current glazing is 14mm and have 12mm beading.
Anything else to consider?

Like the look of black UPVC windows, any idea of as guide price for new black UPVC units [per sq metre?]

 

[Gazman16]

They wouldn't meet modern regs in any way shape or form but your building inspector may let you use them and just ask for extra insulation elsewhere.

If he does ask you to upgrade the glass you may as well go with new windows as the glass is about 50% of the cost.

Far too many variables for a m/2 price, But ballpark of £120/150. About 20% more than white windows.

 

[foxhole]

Thanks, confirmed my thoughts about re-use.[how thick do windows need to be for current regs?]
Do you know what terminology is for 'small pane units' on a glazed unit [Fret ?].
Having trouble finding anything other than standard windows.

 

[Gazman16]

Georgian bar style?

Georgian bars are the ones they do inside the double glazed unit. (Note if your going for black windows outside and white inside matching Georgian bars can be quite expensive)

The other option is Astragal bars which go on the outside of the glass (again can be expensive)

 

[Gazman16]

Its not about the thickness of the windows but they must have had their U values tested in a lab with glass and fittings in place and have a sticker to show the rating. This only came in about 5 years ago so if the windows are older than that they wont have a rating.

Also all parts are ment to be individually CE marked now too

 

[foxhole]

Georgian bar style?

Georgian bars are the ones they do inside the double glazed unit. (Note if your going for black windows outside and white inside matching Georgian bars can be quite expensive)

The other option is Astragal bars which go on the outside of the glass (again can be expensive)

Thanks, the wife never chooses a cheap option.

 

[Gazman16]

Lol, No they never do.

Astragal bars really do look very good but they do have a few draw backs.
Firstly the cost.
In the future replacing any unit will cost more.
The windows will come pre-glazed making fitting trickier especially with large windows.